GM317 Datasheet, PDF (1/8 Pages) List of Unclassifed Manufacturers – 3- TERMINAL ADJUSTABLE REGULATOR

AA
MICROELECTRONICS
Power Management
GM317
3- TERMINAL ADJUSTABLE REGULATOR
Description
The GM317 is an adjustable 3-terminal positive voltage reg-
ulator capable of supplying in excess of 1.5 A over an out-
put voltage range of 1.2 V to 37 V. This voltage regulator is
exceptionally easy to use and requires only two external re-
sistors to set the output voltage. Further, it employs internal
current limiting, thermal shutdown and safe area compen-
sation, making it essentially blow-out proof.
The GM317 a wide variety of applications including local,
application, and on card regulation. This device can also
be used to make a programmable output regulator, or by
connecting a fixed resistor between the adjustment and out-
put. The GM317 can be used as a precise current regula-
tor.
Features
Output current up to 1.5A
Output Voltages 1.2V to 37V
Input Regulation typ. 0.01% per input
Output Regulation typ. 0.1%
Peak Output Current Constant over
Temperature Range of Regulator
Available in TO-220 and TO-263 Packages
Ripple Rejection Typically 80dB
Direct replacements for LM317
TYPICAL APPLICATION
V_IN
C_IN*
0.1µF
GM317
V_IN
V_OUT
ADJ
I_ADJ
R2
V_OUT
R1
240W
+ _CO**
1µF
* C_IN is required if regulator is located an appreciable distance from power supply filter.
**C_{O i}s not needed for stability, however, it improve transient response.
R2
V_OUT= 1.25V (1+ _R1 ) + I_ADJR2
Since I_ADJ is controlled to less than 100µA, the error associated with this term is negligible
in most applications.
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