GM317L Datasheet, PDF (1/7 Pages) Gamma Microelectronics Inc. – 3-TERMINAL 100mA ADJUSTABLE REGULATOR

GM317L
3-TERMINAL 100mA
ADJUSTABLE REGULATOR
Description
Features
The GM317L is an adjustable 3-terminal positive
voltage regulator capable of supplying 100mA
„
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.
GM317L 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 100mA
Output Voltages 1.2V to 37V
Internal thermal overload protection
Internal short circuit current limiting
Output transistor safe area
compensation
Floating operation for high voltage
applications
Available in TO-92 and SO8 packages
Applications
„ Voltage Regulators
„ Power Supplies
„ Current Regulators
Typical Application Circuit
„ Switching Regulators
„ Current Limiter
„ Constant Current Battery Charger
„ Current Limited Charger
L
V_IN
V_{IN GM317L} ^V_OUT
V_OUT
C_IN*
0.1µF
ADJ
I_ADJ
R1
240Ω
C_O**
1µF
R2
* 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.
V_OUT= 1.25V (1+
R2
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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