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IR3552 Datasheet(PDF) 1 Page - International Rectifier |
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IR3552 Datasheet(HTML) 1 Page - International Rectifier |
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1 / 23 page  IR3552 40A Integrated PowIRstage ® www.irf.com | © 2014 International Rectifier February 19, 2014 | FINAL 1 FEATURES • Peak efficiency up to 94.5% at 12VIN to 1.8VOUT, 93.3% at 1.2VOUT • 40A PowIRstage® includes: Integrated Driver, Control MOSFET, Synchronous MOSFET and Schottky Diode • <1uA Disabled ICC Bias Current • <500uA Enabled ICC Bias Current • Input voltage (VIN) range of 4.5V to 17V with available 14:1 VIN_DIV monitor pin • Flexible Drive Voltage (VDRV) from 4.5V to 13.2V to optimize converter efficiency • Integrated bootstrap PFET for improved high side MOSFET enhancement • VDRV under voltage lockout protection • 5V VCC with under voltage lockout protection • Switching frequency up to 1.5MHz • Over-temperature TFAULT alert flag with internal temperature exceeds 150°C • MODE pin selectable 3.3V tri-state PWM logic or IR Active Tri-Level (ATL) PWM logic • Efficient dual sided cooling • Small 4mm x 6 mm x 0.9mm PQFN package • Lead-free RoHS compliant package APPLICATIONS • High current solutions with true sleep requirements • High frequency, low profile DC-DC converters • Voltage Regulators for CPUs, GPUs, and DDR memory arrays DESCRIPTION The IR3552 integrated PowIRstage™ contains a low quiescent current synchronous buck gate driver IC which is co-packed with control and synchronous MOSFETs and low side Schottky diode to further improve efficiency. The package is optimized for PCB layout, heat transfer, driver/MOSFET control timing, and minimal switch node ringing when layout guidelines are followed. The paired gate driver and MOSFET combination enables higher efficiency at lower output voltages required by cutting edge CPU, GPU and DDR memory designs. The IR3552 also supports <1uA disabled ICC bias current when the ENABLE pin is pulled low. This feature supports ultra-low or “near-off” power shutdown requirements of battery powered devices. 1.5MHz switching frequency enables high performance transient response, allowing miniaturization of output inductors, as well as input and output capacitors while maintaining industry leading efficiency. The IR3552’s superior efficiency enables smallest size and lower solution cost. The IR3552 provides two selectable PWM logic modes, the regular 3.3V tri-state PWM logic or International Rectifier’s Active Tri-Level (ATL) PWM logic. The ATL PWM logic eliminates a dedicated Body-braking TM pin and improves the transient response of the converter during load release. The IR3552 provides a thermal warning output set to 150°C, which makes it possible to protect critical circuits on the PCB. ORDERING INFORMATION Base Part Number Package Type Standard Pack Orderable Part Number Form Quantity IR3552MTRPBF PQFN 4 mm x 6 mm Tape and Reel 3000 IR3552MTRPBF |
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