HI-SINCERITY
MICROELECTRONICS CORP.
Spec. No. : Preliminary Data
Issued Date : 1998.08.01
Revised Date : 2001.07.20
Page No. : 1/3
H7809AI
H7809BI
3-TERMINAL POSITIVE VOLTAGE REGULATOR
Description
The H7809_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.
H7809_I is characterized for operation from 0擄C to +125擄C, and if operating temperature will al-
ways hi, please refer the power dissipation curve.
Absolute Maximum Ratings
(Ta=25擄C)
鈥?/div>
Input Voltage.......................................................................... 35 V (5V Through 9V), 40 V (24V)
鈥?/div>
Total Power Dissipation ............................................................................................Internal limit
鈥?/div>
Operating Temperature Range ...............................................................................0擄C to +70擄C
鈥?/div>
Maximum Junction Temperature........................................................................................125擄C
鈥?/div>
Storage Temperature Range .............................................................................-55擄C to +150擄C
鈥?/div>
Lead Temperature (Soldering 10S)....................................................................................230擄C
Typical Application
Schematic Diagram
Input
Vin
1
H7809_I
2
3
Vout
10K
1K
2K
200
200
0.3
3.4K
6.3V
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
H7809AI, H7809BI
HSMC Product Specification
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