HV9605

HV9605 HV9605 Preliminary High Voltage Current Mode PWM Controller for ISDN Equipment Ordering Information +VIN Min 15V Max 250V Feedback Accuracy < ± 1% Max Duty Cycle 49% 14 Pin Plastic DIP HV9605P Package Options 14 Pin Narrow Body SOIC HV9605NG Die HV9605X Features BiCMOS/DMOS technology Current mode control 49% duty cycle operation Programmable START/STOP capability 15V to 250V input range internal start-up regulator 6.0µ A standby supply current for +VIN <20V 0.9mA operating supply current 5.0V V DD supply operation 30KHz to 300KHz internal oscillator 15KHz to 150KHz converter output frequency 1.0MHz low offset error amplifier 1.20V 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 General Description The Supertex HV9605 is a BiCMOS/DMOS single-output, current mode, pulse width modulator IC designed to meet the requirements of ETR-060 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. Utilizing Supertex’s proprietary BiCMOS/DMOS technology, it requires less than one tenth of the operating power of conventional bipolar PWM ICs. Dynamic range for regulation is also increased to approximately 8 times that of similar bipolar parts. It operates directly from any DC input voltage between 15 and 250 VDC. The START and STOP input voltage thresholds c...