BETAPIN 1 · Supply
Supply inputINPUT
Function
Feeds the series pass regulator.
How to connect
Connect to the example +9 V supply with local 0.1 µF bypass.
Electrical note
TO-92 and SOIC physical pin 1. Verify chip-origin differential limits.
100 mA adjustable linear regulator
LM317L Pinout
Explore LM317L pins, signal names, electrical functions and connection guidance for each package.
Package view
3Physical pins
LM317LCLPTO-92
Manufacturer-referencedTexas Instruments
Pin diagram
Select a pin to explore its connection
Highlight
LM317LCLPTO-92Front view · flat face toward you · left-to-right 3 ADJ, 2 OUT, 1 IN
LM317LCDRSOIC-8Top view · IN1, OUT2/3/6/7, ADJ4, NC5/8
Click a lead or use the arrow keys. Front view · flat face toward you · left-to-right 3 ADJ, 2 OUT, 1 IN
PIN 2 · Regulated output
Regulated outputOUTPUT
Function
Supplies the load and resistor divider.
How to connect
Connect all SOIC OUTPUT leads together on the PCB.
Electrical note
TO-92 pin 2; SOIC pins 2, 3, 6 and 7 are internally common.
PIN 3 · Feedback adjustment
Adjustment terminalADJUST
Function
Feedback reference, approximately 1.25 V below OUTPUT for legacy chips.
How to connect
Connect R1 from OUTPUT to ADJUST and R2 from ADJUST to ground.
Electrical note
TO-92 pin 3; SOIC pin 4. ADJUST is not ground.
PIN 4 · Regulated output
Common output contactOUTPUT
Function
SOIC pin 3 connects internally to the other OUTPUT pins.
How to connect
Join all OUTPUT contacts on the PCB.
Electrical note
SOIC only; no corresponding TO-92 lead.
PIN 5 · Not connected
No internal connectionNC
Function
SOIC pin 5 has no internal connection.
How to connect
May be grounded for improved thermal performance per TI; not required.
Electrical note
SOIC only; no corresponding TO-92 lead.
PIN 6 · Regulated output
Common output contactOUTPUT
Function
SOIC pin 6 connects internally to the other OUTPUT pins.
How to connect
Join all OUTPUT contacts on the PCB.
Electrical note
SOIC only; no corresponding TO-92 lead.
PIN 7 · Regulated output
Common output contactOUTPUT
Function
SOIC pin 7 connects internally to the other OUTPUT pins.
How to connect
Join all OUTPUT contacts on the PCB.
Electrical note
SOIC only; no corresponding TO-92 lead.
PIN 8 · Not connected
No internal connectionNC
Function
SOIC pin 8 has no internal connection.
How to connect
May be grounded for improved thermal performance per TI; not required.
Electrical note
SOIC only; no corresponding TO-92 lead.