CAT102 Datasheet | Catalyst Semiconductor

Precision, Adjustable Shunt Regulator (600m V Reference) - +1% Initial Accuracy Features s Low voltage reference: 600m V s Low temperature coefficient reference: 25ppm s Accurate 600m V reference voltage: s Low supply current: 300µA s Open collector output s Directly drives optocouplers s pact 5-lead SOT23 package s Industrial temperature range: -40°C to 85°C - SOT23 Package +6m V at TJ=25°C s High PSRR: 45d B at 300k Hz s High line rejection: +1m V (VCC from 2.2V to 18V) APPLICATIONS s SMPS control loop s Low temperature coefficient voltage reference s Power management s Replaces zener diodes s Isolated DC-to-DC converters s Network, tele and cellular base station power supplies s Adjustable voltage reference DESCRIPTION The CAT102 is a low-voltage reference and amplifier. Designed for the control loop of low-voltage power supplies, the reference voltage has been designed for 600m V. Over a junction temperature from -40°C to 105°C the reference voltage is within 8m V of the nominal 600m V. In addition, the error amplifier output and the supply voltage pin are on separate pins. Power supply rejection is a high 45d B at 300k Hz. The output, OUT, can sink 20m A at a maximum saturation voltage of 250m V. When bined with an optocoupler, the CAT102 can be used as an error amplifier that controls the feedback loop in isolated low-output voltage switching power supplies. FUNCTIONAL DIAGRAM IN 5 1 Error Amplifier + VREF 600m V - + - PIN CONFIGURATION OUT 3 SOT23-5 TOP VIEW FB 1 GND 2 OUT 3 4 NC 5 IN 2 GND © 2003 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice Doc. No. 4007, Rev. L PIN DESCRIPTIONS Pin Number 1 2 3 4 5 Pin Name FB GND OUT NC IN Function Inverting input to error amplifier Ground Output of error amplifier. Source & sink current capability is 20m A. No connection Positive supply ORDERING INFORMATION Part Number Package Temperature Range CAT102EUK-TE7 TE7 = 7" Reel, 3,000 parts per reel. 5-Pin...