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ISL6522CR-T Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6522CR-T Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 14 page 1 ® FN9030.7 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 trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2001, 2002, 2004, 2005. All Rights Reserved PowerPC® is a trademark of IBM. AlphaPC™ is a trademark of Digital Equipment Corporation. Pentium® is a registered trademark of Intel Corporation. ISL6522 Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller The ISL6522 provides complete control and protection for a DC-DC converter optimized for high-performance micro- processor applications. It is designed to drive two N-Channel MOSFETs in a synchronous rectified buck topology. The ISL6522 integrates all of the control, output adjustment, monitoring and protection functions into a single package. The output voltage of the converter can be precisely regulated to as low as 0.8V, with a maximum tolerance of ±1% over temperature and line voltage variations. The ISL6522 provides simple, single feedback loop, voltage- mode control with fast transient response. It includes a 200kHz free-running triangle-wave oscillator that is adjustable from below 50kHz to over 1MHz. The error amplifier features a 15MHz gain-bandwidth product and 6V/ µs slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty ratio ranges from 0–100%. The ISL6522 protects against overcurrent conditions by inhibiting PWM operation. The ISL6522 monitors the current by using the rDS(ON) of the upper MOSFET which eliminates the need for a current sensing resistor. Pinouts SOIC, TSSOP TOP VIEW QFN TOP VIEW Features • Drives two N-Channel MOSFETs • Operates from +5V or +12V input • Simple single-loop control design - Voltage-mode PWM control • Fast transient response - High-bandwidth error amplifier - Full 0–100% duty ratio • Excellent output voltage regulation - 0.8V internal reference - ±1% over line voltage and temperature • Overcurrent fault monitor - Does not require extra current sensing element - Uses MOSFETs rDS(ON) • Converter can source and sink current • Small converter size - Constant frequency operation - 200kHz free-running oscillator programmable from 50kHz to over 1MHz • 14-lead SOIC and TSSOP package and 16-lead 5x5mm QFN Package • QFN Package - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline. - Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile • Pb-Free Available (RoHS Compliant) Applications • Power supply for Pentium®, Pentium Pro, PowerPC® and AlphaPC™ microprocessors • High-power 5V to 3.xV DC-DC regulators • Low-voltage distributed power supplies 8 9 10 11 12 13 14 7 6 5 4 3 2 1 OCSET SS EN COMP FB RT VCC LGATE PGND BOOT UGATE PHASE GND PVCC 1 3 4 15 SS COMP FB EN 16 14 13 2 12 10 9 11 6 57 8 PVCC LGATE PGND BOOT GND Data Sheet March 4, 2005 |
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Similar Description - ISL6522CR-T |
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