UNISONIC TECHNOLOGIES CO., LTD

TL431LL

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

1 of 6

Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R103-072.a

LOW CATHODE CURRENT

ADJUSTABLE PRECISION

SHUNT REGULATOR



DESCRIPTION

The UTC TL431LL is an adjustable shunt regulator with

three-terminal and thermal stable with full operation range. It

features include sharp turn-on characteristics, low output

impedance and low temperature coefficient, so Zener diode can

be replaced by UTC TL431LL in many applications, for example,

charger devices, switching power supply and other adjustable

regulators.

maximum cathode voltage (36V) can be set to by UTC TL431LL.

The UTC TL431LL is offered in two grade initial voltage

tolerance at 25°C, 0.5%, and 1%.



FEATURES

* High stability under capacitive load

* Programmable precise output voltage from 2.5V to 36V

* Sink current capacity from 50µA to 100mA

* Low minimum cathode current for regulation:

10µA (Typ.), 50µA (Max.)

* Low temperature deviation: 4.5mV typical

* Low output noise

* Wide operating range: -40°C~125°C



ORDERING INFORMATION

Ordering Number

Package

Pin Assignment

Packing

Lead Free

Halogen Free

1

2

3

TL431LLK-AE2-R

TL431LLG-AE2-R

SOT-23-3

K

R

A

Tape Reel

Note: Pin Code: K: Cathode

R: Reference

A: Anode



MARKING

4CLL

L: Lead Free

G: Halogen Free