DESCRIPTION
The TSM101/TSM101Aintegrated circuit incorporates a high stability series band gap voltage reference, two ORed operational amplifiers and a current source.
This IC compares the DC voltage and the current level at the output of a switching power supply to an internal reference. It provides a feedback through an optocouplerto the PWM controller IC in the primary side.
The controlled current generator can be used to modify the level of current limitation by offsetting the information coming from the current sensing resistor.

■ 1.24V SERIES VOLTAGE REFERENCE WITH
   10mA OUTPUT CURRENT AND 1% PRECISION (TSM101A)
■ TWO OPERATIONAL AMPLIFIERS WITH
   ORED OUTPUT AND 1MHZ GAIN BANDWIDTH PRODUCT
■ BUILT-IN CURRENT GENERATOR WITH ENABLE/DISABLEFUNCTION
■ 4.5 TO 32V SUPPLY VOLTAGE RANGE
■ SO8, DIP8 AND TSSOP8 PACKAGES

APPLICATIONS
   This circuit is designed to be used in battery chargers with a constant voltage and a limited output current.
   It canbeused in everytypes ofapplicationrequiring a precision voltage regulation and current limitation.
   Other applications include voltage supervisors, over voltage protection...