HV9605
HV9605
Preliminary
High Voltage Current Mode PWM
Controller for ISDN Equipment
Ordering Information
+V
IN
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
6.0µA standby supply current for +V
IN
<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 V
DD
= 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 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
IN(START)
> +V
IN(STOP)
. The output stage is push-pull CMOS,
eliminating the need for external clamping diodes. The clock
frequency is set with a single external resistor.
Applications
ISDN network terminations
ISDN terminals
ISDN terminal adapters
Feature phones
SLIC circuits
PBX systems
Modems
Distributed power systems
DC/DC converters
11/30/98
Absolute Maximum Ratings*
+V
IN
, Input Voltage
Supply Voltage, V
DD
Operating Temperature Range
Storage Temperature Range
Power Dissipation @ 25°C, SOIC
Power Dissipation @ 25°C, Plastic DIP
*All voltages referenced to GND
-0.5V to +250V
-0.5V to +10V
-40°C to +85°C
-65°C to +150°C
750mW
1000mW
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
11/30/98
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.
1
SUPERTEX [ Supertex, Inc ]
