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ISL6842 Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6842 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 9 page 1 ® FN9124.1 ISL6842, ISL6843, ISL6844, ISL6845 Improved Industry Standard Single Ended Current Mode PWM Controller The ISL6842, ISL6843, ISL6844, ISL6845 family of adjustable frequency, low power, pulse width modulating (PWM) current mode controllers is designed for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent over-current protection. This advanced BiCMOS design is pin compatible with the industry standard 384x family of controllers and offers significantly improved performance. Features include low operating current, 60 µA start-up current, adjustable operating frequency to 2MHz, and high peak current drive capability with 20ns rise and fall times. Features • 1A MOSFET gate driver •60 µA startup current, 100µA maximum • 30ns propagation delay current sense to output • Fast transient response with peak current mode control • Adjustable switching frequency to 2MHz • 20ns rise and fall times with 1nF output load • Trimmed timing capacitor discharge current for accurate deadtime/maximum duty cycle control • High bandwidth error amplifier • Tight tolerance voltage reference over line, load, and temperature • Tight tolerance current limit threshold Applications • Telecom and Datacom Power • Wireless Base Station Power • File Server Power • Industrial Power Systems • PC Power Supplies • Isolated Buck and Flyback Regulators • Boost Regulators Pinout ISL6842, ISL6843, ISL6844, ISL6845 (8-PIN SOIC, MSOP) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. DWG. # ISL6842IB -40 to 105 8 Ld SOIC M8.15 ISL6842IU -40 to 105 8 Ld MSOP M8.118 ISL6843IB -40 to 105 8 Ld SOIC M8.15 ISL6843IU -40 to 105 8 Ld MSOP M8.118 ISL6844IB -40 to 105 8 Ld SOIC M8.15 ISL6844IU -40 to 105 8 Ld MSOP M8.118 ISL6845IB -40 to 105 8 Ld SOIC M8.15 ISL6845IU -40 to 105 8 Ld MSOP M8.118 NOTE: Add -T to part number for Tape and Reel packaging. PART NUMBER RISING UVLO MAX. DUTY CYCLE ISL6842 14.4V 100% ISL6843 8.4V 100% ISL6844 14.4V 50% ISL6845 8.4V 50% COMP FB RTCT VREF VDD OUT GND 1 2 3 4 8 CS 7 6 5 Data Sheet October 2003 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 © Intersil Americas Inc. 2003. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. |
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