HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200405
Issued Date : 2004.04.01
Revised Date : 2006.01.19
Page No. : 1/12
H78XX Series
3-TERMINAL POSITIVE VOLTAGE REGULATORS
H78XX Series Pin Assignment
Tab
3-Lead Plastic
TO-252
Package Code: J
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
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.
Tab
1
2
3
3-Lead Plastic
TO-251
Package Code: I
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
1
2
3
3-Lead Plastic
SOT-82
Package Code: NE
Pin 1: V
IN
Pin 2: GND
Pin 3: V
OUT
1
2
3
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
Internally limited
(Note)
-30 to 85
-55 to 150
150
Unit
V
o
o
Tab
3-Lead Plastic
TO-220AB
Package Code: E
Pin 1: V
IN
Pin 2 & Tab: GND
Pin 3: V
OUT
3
C
C
o
C
1
2
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
Thermal Resistance Junction-Case
Thermal Resistance Junction-Ambient
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
Schematic Diagram & Equivalent Circuit
Schematic Diagram
Input
1
Equivalent Circuit
Series
Pass
Element
Output
3
V
IN
Current
Generator
SOA
Protection
Starting
Circuit
Reference
Voltage
Error
Amplifier
Thermal
Protection
V
OUT
GND
2
H78XXAJ / BJ, H78XXAI / BI, H78XXANE / BNE, H78XXAE / BE
HSMC Product Specification
HSMC [ HI-SINCERITY MOCROELECTRONICS ]
