AIC431 Datasheet, PDF (1/11 Pages) Analog Intergrations Corporation – Adjustable Precision Shunt Regulators

AIC431/TL431A/TL431
Adjustable Precision Shunt Regulators
n ^FEATURES
l Unconditionally Stable.
l Precision Reference Voltage.
AIC431 :2.495V ±0.5%
TL431A :2.495V ±1.0%
TL431 :2.495V ±1.6%
l Sink Current Capability: 200mA.
l Minimum Cathode Current for Regulation: 250µA.
l Equivalent Full-Range Temperature Coefficient:
50 ppm/°C.
l Fast Turn-On Response.
l Low Dynamic Output Impedance: 0.08Ω.
l Adjustable Output Voltage.
l Low Output Noise.
l Space Saving SOT-89, SOT-23, TO-92 and SO8
packages.
n ^{TYPICAL APPLICATION CIRCUIT}
VIN
VOUT
+
R1
+
AIC431
R2
n ^DESCRIPTION
The AIC431/TL431A/TL431 are 3-terminal ad-
justable precision shunt regulators with guar-
anteed temperature stability over the applica-
ble extended commercial temperature range.
The output voltage may be set at any level
greater than 2.495V (V_REF) up to 30V merely
by selecting two external resistors that act as
a voltage divider network. These devices have
a typical output impedance of 0.08Ω. Active
output circuitry provides a very sharp turn-on
characteristics, making these devices excel-
lent improved replacements for zener diodes
in many applications.
The precise ±0.5% reference voltage toler-
ance of the AIC431 makes it possible in
many applications to avoid the use of a vari-
able resistor, consequently saving cost and
eliminating drift and reliability problems asso-
ciated with it.
V_OUT=(1+R1/R2)V_REF
Precision Regulator
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-431-06 May 31, 01
TEL: [phone] FAX: [phone]
www.analog.com.tw
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