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HV9605C

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.

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

push-pull CMOS, eliminating the need for external clamping

diodes. The clock frequency is set with a single external resistor.

High Voltage Current Mode PWM Controller

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 +V

❏ 0.9mA operating supply current

❏ 5.0V V

❏ 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 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*

+V

-0.5V to +250V

Supply Voltage, V

DD

-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%

HV9605CP

HV9605CNG

HV9605CX

Ordering Information

11/12/01

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 the latest product specifications, refer to the

Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.