GM317 View Datasheet(PDF) - Gamma Microelectronics Inc.
Part Name
Description
Manufacturer
GM317 Datasheet PDF : 9 Pages
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GM317
3-TERMINAL 1.5A
ADJUSTABLE REGULATOR
Description
Features
The GM317 is an adjustable 3-terminal positive
voltage regulator capable of supplying in excess
of 1.5 A over an output voltage range of 1.2 V to
37 V. This voltage regulator is exceptionally
easy to use and requires only two external
resistors to set the output voltage. Further, it
employs internal current limiting, thermal
shutdown and safe area compensation, making
it essentially blow out proof.
GM317 offers full overload protection. Included
on the chip current limit, thermal overload
protection, and safe-area protection. Normally,
no capacitors is needed unless the device is
situated far from the input filter capacitors in
which case an input bypass is needed. An
optional output capacitor can added to improve
transient response.
Output current up to 1.5A
Output Voltages 1.2V to 37V
Input Regulation typ. 0.01%
Output Regulation typ. 0.1%
Peak Output Current Constant over
Temperature Range of Regulator
Available in TO-220, TO-263, TO252 and
SOT223 Packages
Ripple Rejection Typically 80dB
Direct replacements for LM317
Applications
Voltage Regulators
Power Supplies
Current Regulators
Typical Application Circuit
Switching Regulators
Current Limiter
Constant Current Battery Charger
Current Limited Charger
VIN
CIN*
0.1µF
VIN GM317 VOUT
ADJ
IADJ
VOUT
R1
240Ω
R2
CO**
1µF
* CIN is required if regulator is located an appreciable distance from power supply filter.
**CO is not needed for stability, however, it improve transient response.
VOUT= 1.25V (1+
R2
R1
) + IADJR2
Since IADJ is controlled to less than 100µA, the error associated with this term is negligible
in most applications.
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