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ISL6745AAUZ Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6745AAUZ Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 9 page 1 ® FN6703.1 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 © Intersil Americas Inc. 2008. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6745A Improved Bridge Controller with Precision Dead Time Control The ISL6745A is a low-cost double-ended voltage-mode PWM controller designed for half-bridge and full-bridge power supplies and line-regulated bus converters. It provides precise control of switching frequency, adjustable soft-start, and overcurrent shutdown. In addition, the ISL6745A allows for accurate adjustment of MOSFET non-overlap time (“deadtime”) with deadtimes as low as 35ns, allowing power engineers to optimize the efficiency of open-loop bus converters. The ISL6745A also includes a control voltage input for closed-loop PWM and line voltage feed-forward functions. The ISL6745A is identical to the ISL6745, but is optimized for higher noise environments. Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745A is available in a space-saving MSOP-10 package and is guaranteed to meet rated specifications over a wide -40°C to +105°C temperature range. Features • Precision Duty Cycle and Deadtime Control • 100µA Start-up Current • Adjustable Delayed Overcurrent Shutdown and Re-Start • Adjustable Oscillator Frequency Up to 2MHz • 1A MOSFET Gate Drivers • Adjustable Soft-Start • Internal Over-Temperature Protection • 35ns Control to Output Propagation Delay • Small Size and Minimal External Component Count • Input Undervoltage Protection • Pb-Free (RoHS Compliant) Applications • Half-bridge Converters • Full-bridge Converters • Line-regulated Bus Converters • AC/DC Power Supplies • Telecom, Datacom, and File Server Power Ordering Information PART NUMBER (Note) PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. # ISL6745AAUZ* 6745A -40 to +105 10 Ld MSOP M10.118 *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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. Pinout ISL6745A (10 LD MSOP) TOP VIEW SS 1 RTD VERR CS CT GND OUTA OUTB VDDP VDD 2 3 4 5 6 7 8 9 10 Data Sheet September 11, 2008 |
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