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
VIN
VIN GM317L VOUT
VOUT
CIN*
0.1µF
ADJ
IADJ
R1
240Ω
CO**
1µF
R2
* 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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