HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : HA200109
Issued Date : 1998.08.01
Revised Date : 2001.11.29
Page No. : 1/3
H7812AA
H7812BA
3-TERMINAL POSITIVE VOLTAGE REGULATOR
Description
TO-92
These regulators employ internal current-limiting and thermal-
shutdown, making them essentially indestructible. They can deliver
up to 100mA output current. if the case temperature can keep in Tc=25°C.
They are intended as fixed voltage regulators in a wide range of applications including local
(on-card) regulation for elimination of noise and distribution problems associated with single-point
regulation. In addition, they can be used with power pass elements to make high-current voltage
regulators. The H7812_A used as a Zener diode/resistor combination replacement, offers an
effective output impedance improvement of typically two orders of magnitude, along with lower
quiescent current and lower noise.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage....................................................................................................................... 35 V
•
Total Power Dissipation..................................................................................... Internally limited
•
Operating Temperature Range .......................................................................... 0
°C
to +125
°C
•
Maximum Junction Temperature...................................................................................... 125
°C
•
Storage Temperature Range........................................................................... -55
°C
to +150
°C
•
Lead Temperature (Soldering 10S).................................................................................. 260
°C
Typical Application
Schematic Diagram
Vin
Vin
H7812_A
Vout
5kΩ
5.7kΩ
C1
C2
576Ω
100Ω
100Ω
5pF
3.41kΩ
3.89kΩ
7.8kΩ
13kΩ
1.5kΩ
1.9kΩ
Vout
2.23kΩ
Note:
C1 and C2 are required if regulator is
located far from power supply filter
and load, or oscillation may induced
on the loop.
2.84kΩ
Gnd
H7812AA, H7812BA
HSMC Product Specification