BETAPIN 1 · Not connected
No connectionNC
Function
Unused contact
How to connect
Leave unconnected.
Adjustable precision regulator
LM723 Pinout
Explore LM723 pins, signal names, electrical functions and connection guidance for each package.
Package view
14Physical pins
LM723CNPDIP-14
Manufacturer-referencedSTMicroelectronics
Pin diagram
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LM723CNPDIP-14Top view
LM723CDSOIC-14Top view
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PIN 2 · Control
Input / controlCL
Function
Current-limit transistor base
How to connect
Connect to OUT10 before the 10 Ω sense resistor.
PIN 3 · Control
Input / controlCS
Function
Current-sense transistor emitter
How to connect
Connect to the regulated output after the sense resistor.
PIN 4 · Inputs
Input / controlIN−
Function
Error amplifier feedback
How to connect
Connect to the regulated output through 3 kΩ; connect compensation capacitor here.
PIN 5 · Inputs
Input / controlIN+
Function
Error amplifier reference input
How to connect
Connect to the 4.3 kΩ / 10 kΩ reference-divider junction.
PIN 6 · Reference
Input / controlVREF
Function
Nominal 7.15 V reference
How to connect
Connect 4.3 kΩ to IN+5; 10 kΩ from IN+5 to ground.
PIN 7 · Supply
SupplyV−
Function
Control-circuit return
How to connect
Connect to ground.
PIN 8 · Not connected
No connectionNC
Function
Unused contact
How to connect
Leave unconnected.
PIN 9 · Reference
Input / controlVZ
Function
Internal zener connection
How to connect
Leave open in this positive-output example.
PIN 10 · Outputs
OutputOUT
Function
Internal pass emitter
How to connect
Connect CL2 and the input side of the 10 Ω sense resistor.
PIN 11 · Supply
SupplyVC
Function
Pass-transistor collector
How to connect
Connect to +12 V.
PIN 12 · Supply
SupplyV+
Function
Control-circuit positive supply
How to connect
Connect to +12 V; bypass locally to ground.
PIN 13 · Control
Input / controlCOMP
Function
Frequency compensation
How to connect
Connect 100 pF between COMP13 and IN−4.
PIN 14 · Not connected
No connectionNC
Function
Unused contact
How to connect
Leave unconnected.