HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 2000.10.01
Page No. : 1/3
H7812AI
H7812BI
3-TERMINAL POSITIVE VOLTAGE REGULATOR
Description
The H7812_I series of three-terminal positive regulators are
available in the TO-251 package and with several fixed output
voltages, making it useful in a wide range of applications. These regulators can provide local
on-card regulation, eliminating the distribution problems associated with single point regulation.
Each type employs internal current limiting, thermal shut-down and safe operating area
protection, making it essent-ially 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.
H7812_I is characterized for operation from 0°C to +125°C, and if operating temperature will al-
ways hi, please refer the power dissipation curve.
Absolute Maximum Ratings
(Ta=25°C)
•
Input Voltage............................................................................ 35 V (5V Through 9V), 40 V (4V)
•
Total Power Dissipation ............................................................................................Internal limit
•
Operating Temperature Range ...............................................................................0°C to +70°C
•
Maximum Junction Temperature........................................................................................125°C
•
Storage Temperature Range .............................................................................-55°C to +150°C
•
Lead Temperature (Soldering 10S)....................................................................................230°C
Typical Application
Schematic Diagram
Input
Vin
1
Vout
H7812_I
2
3
3.4K
6.3V
200
200
0.3
10K
1K
2K
C1
C2
30K
Output
VREF
26
1.9K
20pF
4K
Note :
C1 and C2 are required if regulator
is located far from power supply
filter and load, or oscillation may
induced on the loop.
26
4K
1.2
12.1K
1K
GND
HSMC Product Specification
HSMC [ HI-SINCERITY MOCROELECTRONICS ]
