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ISL6741 Datasheet

  • ISL6741

  • Flexible Double-Ended Voltage and Current Mode PWM Controlle...

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ISL6740, ISL6741
Data Sheet
August 2003
FN9111.1
Flexible Double Ended Voltage and
Current Mode PWM Controllers
The ISL6740, ISL6741 family of adjustable frequency, low
power, pulse width modulating (PWM) voltage mode
(ISL6740) and current mode (ISL6741) controllers is
designed for a wide range of power conversion applications
using half-bridge, full bridge, and push-pull configurations.
These controllers provide an extremely flexible oscillator that
allows precise control of frequency, duty cycle, and
deadtime.
This advanced BiCMOS design features low operating
current, adjustable switching frequency up to 1MHz,
adjustable soft start, internal and external over temperature
protection, fault annunciation, and a bi-directional SYNC
signal that allows the oscillator to be locked to paralleled
units or to an external clock for noise sensitive applications.
Features
鈥?Precision Duty Cycle and Deadtime Control
鈥?95碌A(chǔ) Startup Current
鈥?Adjustable Delayed Over Current Shutdown and Re-Start
(ISL6740)
鈥?Adjustable Short Circuit Shutdown and Re-Start
鈥?Adjustable Oscillator Frequency Up to 2MHz
鈥?Bi-Directional Synchronization
鈥?Inhibit Signal
鈥?Internal Over Temperature Protection
鈥?System Over Temperature Protection Using a Thermistor
or Sensor
鈥?Adjustable Soft Start
鈥?Adjustable input Under Voltage Lockout
PKG.
DWG. #
Ordering Information
PART NUMBER
ISL6740IB
ISL6740IV
ISL6741IB
ISL6741IV
TEMP. RANGE
(
o
C)
-40 to 105
-40 to 105
-40 to 105
-40 to 105
PACKAGE
16 Ld SOIC
16 Ld TSSOP
16 Ld SOIC
16 Ld TSSOP
鈥?Fault Signal
鈥?Tight Tolerance Voltage Reference Over Line, Load, and
Temperature
M16.15
M16.173
M16.15
M16.173
Applications
鈥?Telecom and Datacom Power
鈥?Wireless Base Station Power
鈥?File Server Power
鈥?Industrial Power Systems
鈥?DC Transformers and Buss Regulators
Add -T suffix to part number for tape and reel packaging
x
=
0
1
CONTROL MODE
Voltage Mode
Current Mode
Pinout
ISL6740, ISL6741 (SOIC, TSSOP)
TOP VIEW
OUTA 1
GND 2
SCSET 3
C
T
4
SYNC 5
CS 6
V
ERROR
7
UV 8
16 OUTB
15 V
REF
14 V
DD
13 R
TD
12 R
TC
11 OTS
10 FAULT
9 SS
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2003. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

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