KA78M05 / LM78M05 / MC78M05 3-Terminal 0.5 A Positive Voltage Regulator
August 2013
KA78M05 / LM78M05 / MC78M05
3-Terminal 0.5 A Positive Voltage Regulator
Description
Features
The KA78M05 / LM78M05 / MC78M05 series of three-
Output Current up to 0.5 A
terminal positive regulators is available in the TO-220 / D-
Output Voltages of 5 V
PAK packages, making it useful in a wide range of appli-
Thermal Overload Protection
cations.
Short-Circuit Protection
Output Transistor Safe Operating Area (SOA) Protection
TO-220
GND
1
D-PAK
GND
1
1. Input 2. GND 3. Output
(1)
Ordering Information
Product Number Package Packing Method Operating Temperature
KA78M05TU TO-220 (Dual Gauge) Rail
KA78M05RTM
D-PAK Tape and Reel 0 to +125C
MC78M05CDTX
LM78M05CT TO-220 (Single Gauge) Rail
Note:
1. Refer to below figure for TM / TF suffix of DPAK packing option.
2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78M05 / LM78M05 / MC78M05 Rev. 1.1.0 1 KA78M05 / LM78M05 / MC78M05 3-Terminal 0.5 A Positive Voltage Regulator
Block Diagram
INPUT
OUTPUT
SERIES
PASS
3
ELEMENT
1
CURRENT SOA
R1
GENERATOR PROTECTION
REFERENCE
STARTING
ERROR
VOLTAGE
CIRCUIT
AMPLIFIER
R2
THERMAL
PROTECTION
GND
2
Figure 1. Block Diagram
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only.
Symbol Parameter Value Unit
V Input Voltage (for V = 5 V) 35 V
I O
(2)
R Thermal Resistance, Junction-Case TO-220 (T = +25C) 2.5 C/W
JC C
TO-220 (T = +25C) 66
A
(2, 3)
R Thermal Resistance, Junction-Air C/W
JA
D-PAK (T = +25C) 92
A
T Operating Junction Temperature Range 0 to +125 C
OPR
T Maximum Junction Temperature Range 150 C
J(MAX)
T Storage Temperature Range -65 to +150 C
STG
Notes:
2. Thermal resistance test board.
Size: 76.2 mm x 114.3 mm x 1.6 mm (1S0P)
JEDEC standard: JESD51-3, JESD51-7
3. Assume no ambient airflow.
2001 Fairchild Semiconductor Corporation www.fairchildsemi.com
KA78M05 / LM78M05 / MC78M05 Rev. 1.1.0 2