OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output Input
IOUT R/N (mVp-p) Regulation (Typ.) IIN, IIN, Efficiency
VOUT (Amps Power VIN Nom. Range no load full load
Package
Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ.
Inches (mm)
0.47 x 0.40 x 0.69
OKI-78SR-3.3/1.5-W36E-C 3.3 1.5 4.95 40 ?0.30% ?0.40% 12 7-36 5 0.48 84% 85.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-5/1.5-W36E-C 5 1.5 7.5 75 ?0.30% ?0.40% 12 7-36 5 0.69 89% 90.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-12/1.0-W36E-C 12 1.0 12 75 ?0.25% ?0.25% 24 15-36 5 0.53 93.5% 95.3%
(11.9 x 10.0 x 17.6)
NOTE: All specifications are at nominal line voltage, Vout = nominal and full load, +25?C.with no external capacitor, unless otherwise noted.
NOTE: Please click here to view the data sheet for the OKI-78SR ?Open-frame? series.
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 2 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output Input
IOUT R/N (mVp-p) Regulation (Typ.) IIN, IIN, Efficiency
VOUT (Amps Power VIN Nom. Range no load full load
Package
Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ.
Inches (mm)
0.47 x 0.40 x 0.69
OKI-78SR-3.3/1.5-W36E-C 3.3 1.5 4.95 40 ?0.30% ?0.40% 12 7-36 5 0.48 84% 85.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-5/1.5-W36E-C 5 1.5 7.5 75 ?0.30% ?0.40% 12 7-36 5 0.69 89% 90.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-12/1.0-W36E-C 12 1.0 12 75 ?0.25% ?0.25% 24 15-36 5 0.53 93.5% 95.3%
(11.9 x 10.0 x 17.6)
NOTE: All specifications are at nominal line voltage, Vout = nominal and full load, +25?C.with no external capacitor, unless otherwise noted.
NOTE: Please click here to view the data sheet for the OKI-78SR ?Open-frame? series.
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 2 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS ? OKI-78SR-3.3/1.5-W36E-C
ABSOLUTE MAXIMUM RATINGS Minimum Typical/Nominal Maximum Units
Conditions ?
Full power operation 0 36 Vdc
Input Voltage, Continuous
Input Reverse Polarity None, install external fuse None Vdc
Output Power 0 5.15 W
Output Current Current-limited, no damage, short-circuit protected 0 1.5 A
Storage Temperature Range Vin = Zero (no power) -55 125 ?C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Speci?cations Table is not implied or recommended.
INPUT
Operating voltage range 7 12 36 Vdc
Recommended External Fuse Fast blow 2 A
None, install external fuse None Vdc
Reverse Polarity Protection ?
Internal Filter Type C-TYPE
Input current
Full Load Conditions 0.48 0.51 A
Vin = nominal
Low Line Vin @ min 0.80 0.85 A
2
Inrush Transient 0.16 A -Sec.
Short Circuit Input Current 5 mA
No Load Input Current Vin = nominal 5 10 mA
Shut-Down Mode Input Current 1 mA
(Cin = 2 X 100uF, CBus = 1000uF, LBus = 1uH) 50 mA, pk-pk
Re?ected (back) ripple current ?
GENERAL and SAFETY
@ Vin nom, 3.3Vout 83.7 85.5 %
Efficiency
@ Vin min, 3.3Vout 87.0 88.4 %
Certi?ed to UL-60950-1, IEC/EN60950-1,
Safety Yes
2nd Edition
Per Telcordia SR332, issue 1, class 3, ground
6
78.7 Hours x 10
Calculated MTBF ?
?xed, Tambient=+25?C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 500 kHz
50-100-50% load step, settling time to within
Dynamic Load Response 25 50 ?Sec
?2% of Vout di/dt =1A/?Sec
Dynamic Load Peak Deviation same as above 100 150 mV
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 3 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output Input
IOUT R/N (mVp-p) Regulation (Typ.) IIN, IIN, Efficiency
VOUT (Amps Power VIN Nom. Range no load full load
Package
Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ.
Inches (mm)
0.47 x 0.40 x 0.69
OKI-78SR-3.3/1.5-W36E-C 3.3 1.5 4.95 40 ?0.30% ?0.40% 12 7-36 5 0.48 84% 85.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-5/1.5-W36E-C 5 1.5 7.5 75 ?0.30% ?0.40% 12 7-36 5 0.69 89% 90.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-12/1.0-W36E-C 12 1.0 12 75 ?0.25% ?0.25% 24 15-36 5 0.53 93.5% 95.3%
(11.9 x 10.0 x 17.6)
NOTE: All specifications are at nominal line voltage, Vout = nominal and full load, +25?C.with no external capacitor, unless otherwise noted.
NOTE: Please click here to view the data sheet for the OKI-78SR ?Open-frame? series.
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 2 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator DC-DC
Typical units
FEATURES PRODUCT OVERVIEW
Encapsulated in a 0.47 x 0.69 inch (11.9 x Three nominal output voltages are offered (3.3,
7-36Vin (3.3 & 5Vout), 15-36Vin (12Vout)
17.6 mm) vertical or horizontal package, the OKI- 5 and 12 VDC), up to 1.5 Amp maximum output.
Fixed Output: 3.3 or 5V @ 1.5A or 12V @ 1.0A
78SR-E series are non-isolated switching
Based on ?xed-frequency buck switching
Vertical SIP or horizontal mount, small footprint,
regulator (SR) DC-DC power converters for topology, the high ef?ciency means very low heat
in an Encapsulated package
embedded applications. The ?xed single output and little electrical noise, requiring no external
converters offer both tight regulation and high components. The 3.3 and 5Vout models have an
?No heat sink? direct replacement for 3-terminal
ef?ciency directly at the power usage site and are ultra wide input range of 7 to 36 Volts DC and the
78xx-series linear regulators
a direct plug-in replacement for TO-220 package
12Vout model has an input voltage range of 15 to
High ef?ciency with no external components
78xx series linear regulators. Typically, no extra 36V.
Short circuit protection
outside components are required.
Protection features include short circuit
Outstanding thermal derating performance
current limit protection. The OKI-78SR-E is
UL/EN/IEC 60950-1, 2nd Edition safety approvals designed to meet all standards approvals.
RoHS-6 (no lead) hazardous material compliance
is speci?ed as standard.
Connection Diagram
+Vin +Vout
? Switching
F1
? Filters
Controller
? Current Sense
External
DC
Power
Reference and
Source
Error Ampli?er
Common Common
Figure 1. OKI-78SR-E
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See speci?cations.
(Pending)
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 1 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output Input
IOUT R/N (mVp-p) Regulation (Typ.) IIN, IIN, Efficiency
VOUT (Amps Power VIN Nom. Range no load full load
Package
Root Model (Volts) max) (Watts) Max. Line Load (Volts) (Volts) (mA) (Amps) Min. Typ.
Inches (mm)
0.47 x 0.40 x 0.69
OKI-78SR-3.3/1.5-W36E-C 3.3 1.5 4.95 40 ?0.30% ?0.40% 12 7-36 5 0.48 84% 85.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-5/1.5-W36E-C 5 1.5 7.5 75 ?0.30% ?0.40% 12 7-36 5 0.69 89% 90.5%
(11.9 x 10.0 x 17.6)
0.47 x 0.40 x 0.69
OKI-78SR-12/1.0-W36E-C 12 1.0 12 75 ?0.25% ?0.25% 24 15-36 5 0.53 93.5% 95.3%
(11.9 x 10.0 x 17.6)
NOTE: All specifications are at nominal line voltage, Vout = nominal and full load, +25?C.with no external capacitor, unless otherwise noted.
NOTE: Please click here to view the data sheet for the OKI-78SR ?Open-frame? series.
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 2 of 20 OKI-78SR-E Series
Encapsulated Non-Isolated Switching Regulator
DC-DC
FUNCTIONAL SPECIFICATIONS ? OKI-78SR-3.3/1.5-W36E-C
ABSOLUTE MAXIMUM RATINGS Minimum Typical/Nominal Maximum Units
Conditions ?
Full power operation 0 36 Vdc
Input Voltage, Continuous
Input Reverse Polarity None, install external fuse None Vdc
Output Power 0 5.15 W
Output Current Current-limited, no damage, short-circuit protected 0 1.5 A
Storage Temperature Range Vin = Zero (no power) -55 125 ?C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Speci?cations Table is not implied or recommended.
INPUT
Operating voltage range 7 12 36 Vdc
Recommended External Fuse Fast blow 2 A
None, install external fuse None Vdc
Reverse Polarity Protection ?
Internal Filter Type C-TYPE
Input current
Full Load Conditions 0.48 0.51 A
Vin = nominal
Low Line Vin @ min 0.80 0.85 A
2
Inrush Transient 0.16 A -Sec.
Short Circuit Input Current 5 mA
No Load Input Current Vin = nominal 5 10 mA
Shut-Down Mode Input Current 1 mA
(Cin = 2 X 100uF, CBus = 1000uF, LBus = 1uH) 50 mA, pk-pk
Re?ected (back) ripple current ?
GENERAL and SAFETY
@ Vin nom, 3.3Vout 83.7 85.5 %
Efficiency
@ Vin min, 3.3Vout 87.0 88.4 %
Certi?ed to UL-60950-1, IEC/EN60950-1,
Safety Yes
2nd Edition
Per Telcordia SR332, issue 1, class 3, ground
6
78.7 Hours x 10
Calculated MTBF ?
?xed, Tambient=+25?C
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency 500 kHz
50-100-50% load step, settling time to within
Dynamic Load Response 25 50 ?Sec
?2% of Vout di/dt =1A/?Sec
Dynamic Load Peak Deviation same as above 100 150 mV
www.murata-ps.com/support
MDC_OKI-78SR-W36E.A01 Page 3 of 20