ATL431AIDBZR

The ATL431AIDBZR from Texas Instruments is a three-terminal adjustable precision shunt regulator. It is designed for applications requiring stable voltage references, such as onboard regulation, adjustable power supplies, and switching power supplies.

This device features an adjustable regulated output voltage ranging from 2.5V to 36V, set using two external resistors. It operates with a very low quiescent current, with a minimum cathode current of 35µA and a reference current of only 150nA maximum. The internal compensation ensures stability without requiring a capacitive load.

Key electrical characteristics include a reference voltage tolerance of 0.5% for the B grade and 1% for the A grade at 25°C. The typical temperature drift is 5mV over the -40°C to +85°C range for the I version. It boasts an extended cathode current range from 35µA to 100mA and a low output impedance of 0.3Ω maximum.

The ATL431AIDBZR is supplied in a 3-pin SOT-23 package, suitable for surface mounting. It operates within an industrial temperature range of -40°C to 85°C. The standard package quantity is 3,000 units on a large tape and reel.