HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : IC200403
Issued Date : 2004.03.01
Revised Date : 2004.08.31
Page No. : 1/10
H78LXXAM / BM
H78LXXAA / BA
3-TERMINAL POSITIVE VOLTAGE REGULATORS
H78LXX Series Pin Assignment
3-Lead Plastic
SOT-89
Package Code: M
Pin 1: V
OUT
Pin 2: GND
Pin 3: V
IN
3-Lead Plastic
TO-92
Package Code: A
Pin 1: V
OUT
Pin 2: GND
Pin 3: V
IN
12
3
1
2
3
Description
These regulators employ internal current-limiting and thermal-shutdown,
making them essentially indestructible. They can deliver up to 100mA
output current.
Features
•
Maximum Output Current of 100mA (Tc=25°C)
•
Internal Short-Circuit Current Limiting
•
Internal Thermal Overload Protection
•
TO-92 & SOT-89 Package
Typical Application
V
IN
C
IN
0.33uF
(Note 1)
3
H78LXX
Series
2
1
V
OUT
C
OUT
0.1uF
(Note 2)
Absolute Maximum Ratings
(Ta=25°C, Unles Otherwise Specified)
Characteristic
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Junction Temperature
Thermal Resistance
Symbol
V
IN
P
D
T
opr
T
stg
T
j
R
th(j-a)
Rating
40
TO-92
700
SOT-89
500
-30 to 85
-55 to 150
150
208
Unit
V
mW
mW
o
C
o
C
o
C
o
C/W
Note 1: C
IN
is required if regulator is
located an appreciable distance from
power supply filter.
Note 2: C
OUT
is not needed for stability;
however, it does improve transient
response. Values of less than 0.1uF could
cause instability.
Schematic Diagram & Equivalent Circuit
Schematic Diagram
Equivalent Circuit
V
IN
Input
3
Series
Pass
Element
Current
Generator
SOA
Protection
Output
1
Starting
Circuit
Reference
Voltage
Error
Amplifier
Thermal
Protection
V
OUT
GND
2
H78LXXAM / BM, H78LXXAA / BA
HSMC Product Specification
HSMC [ HI-SINCERITY MOCROELECTRONICS ]
