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HV9605

11/30/98

HV9605

11/30/98

Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability

indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to

workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For complete liability information covering

this and other Supertex products, refer to the Supertex 1998 Databook.

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 imple-

ment 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 can be programmed within the operating

input voltage range by means of a resistor divider, provided

+V

eliminating the need for external clamping diodes. The clock

frequency is set with a single external resistor.

High Voltage Current Mode PWM

Controller for ISDN Equipment

Features

BiCMOS/DMOS technology

Current mode control

49% duty cycle operation

Programmable START/STOP capability

15V to 250V input range internal start-up regulator

6.0

µA standby supply current for +V

0.9mA operating supply current

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 V

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

Absolute Maximum Ratings*

-0.5V to +250V

-0.5V to +10V

Operating Temperature Range

-40

°C to +85°C

Storage Temperature Range

-65

°C to +150°C

Power Dissipation @ 25

°C, SOIC

750mW

Power Dissipation @ 25

°C, Plastic DIP

1000mW

*All voltages referenced to GND

Preliminary

14 Pin

14 Pin

Die

Plastic DIP

Narrow Body SOIC

+V

IN

Feedback

Max

Package Options

Min

Max

Accuracy

Duty Cycle

15V

250V

<

± 1%

49%

HV9605P

HV9605NG

HV9605X

Ordering Information