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ISL6744 Datasheet

  • ISL6744

  • 中間總線的脈寬調(diào)制 (PWM) 控制器

  • 16頁(yè)

  • INTERSIL   INTERSIL

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ISL6744
Data Sheet
September 22, 2005
FN9147.8
Intermediate Bus PWM Controller
The ISL6744 is a low cost, primary side, double-ended
controller intended for applications using full and half-bridge
topologies for unregulated DC/DC converters. It is a voltage-
mode PWM controller designed for half-bridge and full-
bridge power supplies. It provides precise control of
switching frequency, adjustable soft-start, precise deadtime
control with deadtimes as low as 35ns, and overcurrent
shutdown.
Low start-up and operating currents allow for easy biasing in
both AC/DC and DC/DC applications. This advanced
BiCMOS design features low start-up and operating
currents, adjustable switching frequency up to 1MHz, 1A
FET drivers, and very low propagation delays for a fast
response to overcurrent faults.
Features
鈥?Precision Duty Cycle and Deadtime Control
鈥?100碌A(chǔ) Start-up Current
鈥?Adjustable Delayed Overcurrent Shutdown and Restart
鈥?Adjustable Oscillator Frequency Up to 2MHz
鈥?1A MOSFET Gate Drivers
鈥?Adjustable Soft-Start
鈥?Internal Over Temperature Protection
鈥?35ns Control to Output Propagation Delay
鈥?Small Size and Minimal External Component Count
鈥?Input Undervoltage Protection
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
Ordering Information
PART NUMBER
ISL6744AU
ISL6744AUZ
(Note)
ISL6744AB
ISL6744ABZ
(Note)
TEMP.
RANGE (擄C)
-40 to 105
-40 to 105
-40 to 105
-40 to 105
PACKAGE
8 Ld MSOP
8 Ld MSOP
(Pb-free)
8 Ld SOIC
8 Ld SOIC
(Pb-free)
PKG.
DWG. #
M8.118
M8.118
M8.15
M8.15
Applications
鈥?Telecom and Datacom Isolated Power
鈥?DC Transformers
鈥?Bus Converters
Pinout
ISL6744 (SOIC, MSOP)
TOP VIEW
SS 1
RTD 2
CS 3
CT 4
8 VDD
7 OUTB
6 OUTA
5 GND
Add 鈥?T鈥?suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2004-2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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