HomedatasheetCL1431

CL1431 Datasheet

Precision Adjustable Shunt Reference
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Description

Features, Applications

FEATURES DESCRIPTION The is an adjustable shunt regulator designed to act as an open-loop error amplifier with a 2.5V temperature compensated reference. Its highly accurate 0.4% bandgap reference is perfect for applications requiring stability and accuracy over temperature and life. Sharp turn-on characteristics and a low temperature coefficient make the CL1431 an excellent replacement for many zener diode applications, programmable to any value greater than 2.5V and 36V by using two external resistors. As a combination error amplifier and reference, it can be used to manage control loops such as switching power supplies. The CL1431 can be used as a direct replacement for the standard TL431. ORDERING INFORMATION Part CL1431D CL1431S PIN CONFIGURATION (Top View) Package TO-92 8-Pin Plastic SOIC SOT-89 Temperature Range to 125oC

Temperature-Compensated: 30ppm/ C Trimmed 0.4% Bandgap Reference Internal Amplifier with 150mA Capability Temperature Range: Extended to 125oC Low Frequency Dynamic Output Impedance: < 150m Low Output Noise Robust ESD Protection

CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

SYMBOL VKA IAK IKA IREF PD PARAMETER Cathode-Anode Reverse Breakdown Anode-Cathode Forward Current Operating Cathode Current Reference Input Current Continuous Power Dissipation TO-92 8L SOIC SOT-89 Junction Temperature Storage Temperature Lead Temperature, Soldering 10 Seconds RATING UNITS A mA

Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

SYMBOL VKA IK PARAMETER Cathode Voltage Cathode Current RATING VREF 36 10 UNIT V mA

Electrical characteristics are guaranteed over full junction temperature range to 125oC). Ambient temperature must be derated based on power dissipation and package thermal characteristics. The conditions are: VKA = VREF and = 10mA unless otherwise stated. SYMBOL VREF TC V REF IREF I REF IK(MIN) IK(OFF) ZKA PARAMETER Reference Voltage VREF with Temp.* Ratio of Change in VREF to Cathode Voltage Reference Input Current IREF Temp Deviation Min I K for Regulation Off State Leakage Dynamic Output Impedance -2 MIN TYP 2.500 MAX 2.530 0.16 UNIT V mV/ oC mV/V mA nA CIRCUIT VREF = 0V, VKA R2 = Over Temp. TEST CONDITION = 25oC Over Temp.



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Manufacturer information

CALOGIC, LLC
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