FEATURES
s Low voltage reference: 600mV s Low temperature coefficient reference: 25ppm s Accurate 600mV reference voltage: s Low supply current: 300µA s Open collector output s Directly drives optocouplers s Compact 5-lead SOT23 package s Industrial temperature range: -40°C to 85°C - SOT23 Package +6mV at TJ=25°C s High PSRR: 45dB at 300kHz s High line rejection: +1mV (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, telecom and cellular base station power supplies s Adjustable voltage reference DESCRIPTION
Over a junction temperature from -40°C to 105°C the reference voltage is within 8mV of the nominal 600mV. In addition, the error amplifier output and the supply voltage pin are on separate pins. Power supply rejection is a high 45dB at 300kHz. The output, OUT, can sink 20mA at a maximum saturation voltage of 250mV. FUNCTIONAL DIAGRAM IN 5 1 Error Amplifier + VREF 600mV – + – PIN CONFIGURATION OUT 3 SOT23-5 TOP VIEW FB 1 GND 2 OUT 3 4 NC 5 IN FB 2 GND © 2003 by Catalyst Semiconductor, Inc.
Catalyst Semiconductor
