General Description
The Supertex HV9605C is a BiCMOS/DMOS single-output, current mode, pulse width modulator IC designed to meet the requirements of ETR-080 for ISDN applications. In a 14 pin package, it provides all the necessary functions to implement a single-switch PWM with a minimum of external parts.

Features
❏ BiCMOS/DMOS technology
❏ Current mode control
❏ 49% duty cycle operation
❏ Programmable START/STOP capability
❏ 15V to 250V input range internal start-up regulator
❏ 6.0µA standby supply current for +VIN <20V
❏ 0.9mA operating supply current
❏ 5.0V VDD supply operation
❏ 30KHz to 300KHz internal oscillator
❏ 15KHz to 150KHz converter output frequency
❏ 1.0MHz low offset error amplifier
❏ 1.25V 2% band gap reference
❏ Output driver optimized for under 10W applications
❏ Low driver output impedance with VDD = 0V
❏ Fast (90nsec) over current shutdown
❏ All pins are ESD protected

Applications
❏ ISDN network terminations
❏ ISDN terminals
❏ ISDN terminal adapters
❏ Feature phones
❏ SLIC circuits
❏ PBX systems
❏ Modems
❏ Distributed power systems
❏ DC/DC converters