NCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 G?
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages) Continuous
Control pin input current 8mA
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C) 260?C
Input voltage, NCS3 12V input types 40V
Input voltage, NCS3 24V input types 80V
SWITCHING FREQUENCY
Parameter Conditions Min. Typ. Max. Units
10% Load 1200
12V input types
100% Load 280
NCS3S1203SC kHz
10% Load 1620
24V input types
100% Load 460
10% Load 1200
12V input types
100% Load 270
NCS3S1205SC kHz
10% Load 1690
24V input types
100% Load 490
10% Load 1220
12V input types
100% Load 310
NCS3S1212SC kHz
10% Load 1680
24V input types
100% Load 570
10% Load 1130
12V input types
100% Load 310
NCS3S1215SC kHz
10% Load 1580
24V input types
100% Load 570
10% Load 1020
24V input types
100% Load 270
NCS3S4803SC kHz
10% Load 1440
48V input types
100% Load 450
10% Load 1190
24V input types
100% Load 260
NCS3S4805SC kHz
10% Load 1590
48V input types
100% Load 470
10% Load 1180
24V input types
100% Load 1570
NCS3S4812SC kHz
10% Load 310
48V input types
100% Load 560
10% Load 1180
24V input types
100% Load 330
NCS3S4815SC kHz
10% Load 1590
48V input types
100% Load 610
APPLICATION NOTES
Recommended Input Capacitor and Maximum Output Capacitance
A 10 ?F output capacitor is recommended for stability under all operating conditions. Maximum output capacitance should not exceed:
Output Voltage MaximumLoad Capacitance
V?F
3.3 470
5 470
12 220
15 110
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KDC_NCS3_B05 Page 2 of 10NCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages) Continuous
Control pin input current 8mA
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C) 260?C
Input voltage, NCS3 12V input types 40V
Input voltage, NCS3 24V input types 80V
SWITCHING FREQUENCY
Parameter Conditions Min. Typ. Max. Units
10% Load 1200
12V input types
100% Load 280
NCS3S1203SC kHz
10% Load 1620
24V input types
100% Load 460
10% Load 1200
12V input types
100% Load 270
NCS3S1205SC kHz
10% Load 1690
24V input types
100% Load 490
10% Load 1220
12V input types
100% Load 310
NCS3S1212SC kHz
10% Load 1680
24V input types
100% Load 570
10% Load 1130
12V input types
100% Load 310
NCS3S1215SC kHz
10% Load 1580
24V input types
100% Load 570
10% Load 1020
24V input types
100% Load 270
NCS3S4803SC kHz
10% Load 1440
48V input types
100% Load 450
10% Load 1190
24V input types
100% Load 260
NCS3S4805SC kHz
10% Load 1590
48V input types
100% Load 470
10% Load 1180
24V input types
100% Load 1570
NCS3S4812SC kHz
10% Load 310
48V input types
100% Load 560
10% Load 1180
24V input types
100% Load 330
NCS3S4815SC kHz
10% Load 1590
48V input types
100% Load 610
APPLICATION NOTES
Recommended Input Capacitor and Maximum Output Capacitance
A 10 ?F output capacitor is recommended for stability under all operating conditions. Maximum output capacitance should not exceed:
Output Voltage MaximumLoad Capacitance
V?F
3.3 470
5 470
12 220
15 110
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KDC_NCS3_B05 Page 2 of 10NCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
APPLICATION NOTES (Continued)
Start-up times
Typical start up times for this series, with a typical input voltage rise time of 2.2?s and output capacitance of 10?F, are shown in the table below. The product series will
start into the maximum output capacitance with increased start times.
Start-up times
Part No.
ms
NCS3S1203SC 0.7
NCS3S1205SC 1
NCS3S1212SC 2.2
NCS3S1215SC 2.3
NCS3S4803SC 1.2
NCS3S4805SC 1.1
NCS3S4812SC 1.9
NCS3S4815SC 2.8
Typical Start-Up Wave Form
Control Pin
The NCS3S converters have a shutdown feature which enables the user to disable the converter into a low power state. The control pin connects to the base of an internal
NPN transistor through a 1K resistor with the converter shut down when the transistor is turned on by an external applied voltage. The converter can also be shut down
using a 5V TTL signal (the unit is OFF for logic High and ON for logic LOW). If the control pin is left open (high impedance), the converter will run normally. A suitable
application circuit is shown below.
D1 (e.g. 1N4001) is necessary for correct operation of the NCS3 when the control
NCS3
signal is LOW. The recommended drive current I to shut down the NCS3 is 2 mA to
B
8 mA. The value of R can be derived as follows:
C
+VIN
V - V - 0.6 - (I x R )
C D1 B IN
R =
C Note: R is a 125mW resistor
IN
I
B
For a switch input:
D1
VC or
Rc Rin
CONTROL
Calculate the value of R from the above equation given switch voltage V and
c c
TTL
1K
chosen current between 2 and 8 mA.
For 5V TTL Signal:
-VIN
Set R to be 680? or less.
c
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260?C for 10 seconds. The pin termination ?nish
on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The series is backward compatible with Sn/Pb soldering
systems.
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KDC_NCS3_B05 Page 3 of 10NCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
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KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages) Continuous
Control pin input current 8mA
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C) 260?C
Input voltage, NCS3 12V input types 40V
Input voltage, NCS3 24V input types 80V
SWITCHING FREQUENCY
Parameter Conditions Min. Typ. Max. Units
10% Load 1200
12V input types
100% Load 280
NCS3S1203SC kHz
10% Load 1620
24V input types
100% Load 460
10% Load 1200
12V input types
100% Load 270
NCS3S1205SC kHz
10% Load 1690
24V input types
100% Load 490
10% Load 1220
12V input types
100% Load 310
NCS3S1212SC kHz
10% Load 1680
24V input types
100% Load 570
10% Load 1130
12V input types
100% Load 310
NCS3S1215SC kHz
10% Load 1580
24V input types
100% Load 570
10% Load 1020
24V input types
100% Load 270
NCS3S4803SC kHz
10% Load 1440
48V input types
100% Load 450
10% Load 1190
24V input types
100% Load 260
NCS3S4805SC kHz
10% Load 1590
48V input types
100% Load 470
10% Load 1180
24V input types
100% Load 1570
NCS3S4812SC kHz
10% Load 310
48V input types
100% Load 560
10% Load 1180
24V input types
100% Load 330
NCS3S4815SC kHz
10% Load 1590
48V input types
100% Load 610
APPLICATION NOTES
Recommended Input Capacitor and Maximum Output Capacitance
A 10 ?F output capacitor is recommended for stability under all operating conditions. Maximum output capacitance should not exceed:
Output Voltage MaximumLoad Capacitance
V?F
3.3 470
5 470
12 220
15 110
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KDC_NCS3_B05 Page 2 of 10NCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
www.murata-ps.com
Isolated 3W 4:1 Input Single Output DC-DC Converters
SELECTION GUIDE
Ef?ciency
Rated Input Rated
Ef?ciency Ripple and
1
12V or 48V MTTF
Current Input
24V Input. Noise
12V or 48V Current Input.
Order Code
Input. 24V Input.
Nom. Min. Typ. Min. Typ. Typ. Max.
V V % mA mA mA % % % % mVp/p mVp/p kHrs
NCS3S1203SC 12 3.3 10 250 125 700 74 77 73 76 32 55 1335
NCS3S1205SC 12 5 5 305 150 600 79 82 79 81 34 60 1081
NCS3S1212SC 12 12 0 300 150 250 81 84 80 83 28 55 1272
NCS3S1215SC 12 15 0 300 150 200 82 86 81 85 20 50 1617
NCS3S4803SC 48 3.3 10 124 65 700 70 74 74 77 22 55 1327
NCS3S4805SC 48 5 5 153 80 600 77.5 80 79 81 36 75 1117
FEATURES
NCS3S4812SC 48 12 0 150 80 250 77 81 80 83 31 65 1211
? UL 60950 recognised NCS3S4815SC 48 15 0 149 80 200 78 81 81 83 22 55 1574
? 4:1 Wide range voltage input
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
? Operating temperature range -40?C to 85?C
12V input types 9 12 36
with derating
Voltage range V
48V input types 18 48 75
? 1.5 kVDC Isolation ?Hi Pot Test?
12V input 5.5
NCS3S12XX
24V input 2
? 3.3V, 5V, 12V & 15V outputs
Input re?ected ripple
mA p-p
current
24V input 3.5
? No electrolytic capacitors
NCS3S48XX
48V input 2
? Continuous short circuit protection
Power consumption at shutdown 2 mW
Input current in shutdown 2.5 mA
PRODUCT OVERVIEW
The NCS3 series of DC-DC converters offers a OUTPUT CHARACTERISTICS
single output voltage from input voltage ranges Parameter Conditions Min. Typ. Max. Units
of 9-36V and 18-75V. The NCS3 is housed in an 3.3V output types 2.31
Rated power W
industry standard package with a standard pinout.
All other output types 3
Voltage set point accuracy All output types ?1 ?2 %
Applications include telecommunications, battery
Line regulation Low line to high line ?0.5 %
powered systems, process control and distributed
Load regulation All output types ?1 %
power systems.
Peak deviation (12.5-37.5% & 37.5-12.5% swing) 5 %Vout
Transient response Settling time
1.5 ms
(within 5% V Nom.)
out
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
CTRL input current Please refer to control pin application note 2 8 mA
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 minute 1500 VDC
NCS3S12XXSC 180
Isolation Capacitance pF
NCS3S48XXSC 185
Resistance Viso = 1kVDC 1 GO
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Operation See derating graphs -40 85
Storage -50 115
?C
Case temperature rise above
100% Load, Nom VIN, Still Air 30 40
ambient
1 Calculated using MIL-HDBK-217 FN2, parts stress method with nominal input voltage at full load.
All speci?cations typical at TA=25?C, nominal input voltage and rated output current unless otherwise speci?ed.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com All enquiries: www.murata-ps.com/support
KDC_NCS3_B05 Page 1 of 10
Input
Voltage
Output
Voltage
Minimum
Load
Output
CurrentNCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection (for SELV input voltages) Continuous
Control pin input current 8mA
Lead temperature 1.0mm from case for 10 seconds (to JEDEC JESD22-B106 ISS C) 260?C
Input voltage, NCS3 12V input types 40V
Input voltage, NCS3 24V input types 80V
SWITCHING FREQUENCY
Parameter Conditions Min. Typ. Max. Units
10% Load 1200
12V input types
100% Load 280
NCS3S1203SC kHz
10% Load 1620
24V input types
100% Load 460
10% Load 1200
12V input types
100% Load 270
NCS3S1205SC kHz
10% Load 1690
24V input types
100% Load 490
10% Load 1220
12V input types
100% Load 310
NCS3S1212SC kHz
10% Load 1680
24V input types
100% Load 570
10% Load 1130
12V input types
100% Load 310
NCS3S1215SC kHz
10% Load 1580
24V input types
100% Load 570
10% Load 1020
24V input types
100% Load 270
NCS3S4803SC kHz
10% Load 1440
48V input types
100% Load 450
10% Load 1190
24V input types
100% Load 260
NCS3S4805SC kHz
10% Load 1590
48V input types
100% Load 470
10% Load 1180
24V input types
100% Load 1570
NCS3S4812SC kHz
10% Load 310
48V input types
100% Load 560
10% Load 1180
24V input types
100% Load 330
NCS3S4815SC kHz
10% Load 1590
48V input types
100% Load 610
APPLICATION NOTES
Recommended Input Capacitor and Maximum Output Capacitance
A 10 ?F output capacitor is recommended for stability under all operating conditions. Maximum output capacitance should not exceed:
Output Voltage MaximumLoad Capacitance
V?F
3.3 470
5 470
12 220
15 110
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KDC_NCS3_B05 Page 2 of 10NCS3 Series
Isolated 3W 4:1 Input Single Output DC-DC Converters
APPLICATION NOTES (Continued)
Start-up times
Typical start up times for this series, with a typical input voltage rise time of 2.2?s and output capacitance of 10?F, are shown in the table below. The product series will
start into the maximum output capacitance with increased start times.
Start-up times
Part No.
ms
NCS3S1203SC 0.7
NCS3S1205SC 1
NCS3S1212SC 2.2
NCS3S1215SC 2.3
NCS3S4803SC 1.2
NCS3S4805SC 1.1
NCS3S4812SC 1.9
NCS3S4815SC 2.8
Typical Start-Up Wave Form
Control Pin
The NCS3S converters have a shutdown feature which enables the user to disable the converter into a low power state. The control pin connects to the base of an internal
NPN transistor through a 1K resistor with the converter shut down when the transistor is turned on by an external applied voltage. The converter can also be shut down
using a 5V TTL signal (the unit is OFF for logic High and ON for logic LOW). If the control pin is left open (high impedance), the converter will run normally. A suitable
application circuit is shown below.
D1 (e.g. 1N4001) is necessary for correct operation of the NCS3 when the control
NCS3
signal is LOW. The recommended drive current I to shut down the NCS3 is 2 mA to
B
8 mA. The value of R can be derived as follows:
C
+VIN
V - V - 0.6 - (I x R )
C D1 B IN
R =
C Note: R is a 125mW resistor
IN
I
B
For a switch input:
D1
VC or
Rc Rin
CONTROL
Calculate the value of R from the above equation given switch voltage V and
c c
TTL
1K
chosen current between 2 and 8 mA.
For 5V TTL Signal:
-VIN
Set R to be 680O or less.
c
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260?C for 10 seconds. The pin termination ?nish
on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The series is backward compatible with Sn/Pb soldering
systems.
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KDC_NCS3_B05 Page 3 of 10