
HI-SINCERITY
MICROELECTRONICS CORP.
H78XX Series
3-TERMINAL POSITIVE VOLTAGE REGULATORS
Spec. No. : IC200405
Issued Date : 2004.04.01
Revised Date : 2006.01.19
Page No. : 1/12
H78XXAJ / BJ, H78XXAI / BI, H78XXANE / BNE, H78XXAE / BE
HSMC Product Specification
Description
The H78XX series can provide local on-card regulation, eliminating the
distribution problems associated with single point regulation. Each
employs internal current limiting, thermal shut-down and safe operating
area protection, making it essentially indestructible. If adequate heat
sinking is provided, they can deliver over 1A output current. Although
designed primarily as fixed voltage regulators, these devices can be used
with external components to obtain adjustable voltages and currents.
Features
Output Current In Excess of 1A
Output Voltages of 5V, 6V, 8V, 9V, 12V
Internal Short-Circuit Current Limiting & Thermal Overload Protection
Guaranteed In Extended Temperature Range
Absolute Maximum Ratings
(T
A
=25
°
C)
Characteristic
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Symbol
V
IN
P
D
T
opr
T
stg
T
j
Rating
40
Unit
V
Internally limited
(Note)
-30 to 85
-55 to 150
150
o
C
o
C
o
C
Note: (1)T
A
=25
o
C, TO-251: 1W, TO-252: 1W, SOT-82: 2.1W, TO-220AB: 2.7W
(2)T
C
=25
o
C, All package: 10W
Thermal Data
Characteristic
Symbol
R
th(j-c)
R
th(j-a)
TO-252
12.5
125
TO-251
12.5
125
SOT-82
12.5
60
TO-220AB
12.5
47
Unit
o
C/W
o
C/W
Thermal Resistance Junction-Case
Thermal Resistance Junction-Ambient
Schematic Diagram & Equivalent Circuit
H78XX Series Pin Assignment
Schematic Diagram
Equivalent Circuit
123
Tab
123
1
3
2
Starting
Circuit
Reference
Voltage
Current
Generator
Error
Amplifier
SOA
Protection
Thermal
Protection
Series
Pass
Element
Output
GND
Input
1
2
3
Tab
3-Lead Plastic
TO-251
Package Code: I
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
3-Lead Plastic
TO-252
Package Code: J
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
123
Tab
3-Lead Plastic
SOT-82
Package Code: NE
Pin 1: V
IN
Pin 2: GND
Pin 3: V
OUT
3-Lead Plastic
TO-220AB
Package Code: E
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
V
OUT
V
IN