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IR3870MBF

International Rectifier
Part Number IR3870MBF
Manufacturer International Rectifier
Description SYNCHRONOUS BUCK REGULATOR
Published Jul 21, 2010
Detailed Description IR3870MBF PD-97392 www.DataSheet4U.com SupIRBuck Features • • • • • • • • • • • • • • • TM 10A HIGHLY INTEGRATED Des...
Datasheet PDF File IR3870MBF PDF File

IR3870MBF
IR3870MBF

Overview
IR3870MBF PD-97392 www.
DataSheet4U.
com SupIRBuck Features • • • • • • • • • • • • • • • TM 10A HIGHLY INTEGRATED Description The IR3870M SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC voltage regulator.
The onboard constant on time hysteretic controller and MOSFETs make IR3870 a space-efficient solution that delivers up to 10A of precisely controlled output voltage in 60°C ambient temperature applications without airflow.
Programmable switching frequency, soft start, and over current protection allows for a very flexible solution suitable for many different applications.
The combination of the gate drive charge pump option and constant on time control allow efficiency optimization in the whole output current range, making this device an ideal choice for battery powered applications.
Additional features include pre-bias startup, very precise 0.
5V reference, over/under voltage shut down, power good output, and enable input with voltage monitoring capability.
WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR Input Voltage Range: 3V to 26V Output Voltage Range: 0.
5V to 12V Continuous 10A Load Capability Constant On-Time control Excellent Efficiency at very low output current levels Gate drive charge pump option to maximize efficiency at higher output current levels Compensation Loop not Required Programmable switching frequency, soft start, and over current protection Power Good Output Precision Voltage Reference (0.
5V, +/-1%) Enable Input with Voltage Monitoring Capability Pre-bias Start Up Under/Over Voltage Fault Protection Ultra small, low profile 5 x 6mm QFN Package Lead-free, halogen-free and RoHS compliant Applications • • • • Notebook and desktop computers Game consoles Consumer electronics - STB, LCD TV, Printers General purpose POL DC-DC Converters Typical Notebook Application Circuit Diagram 1/27/2010 1 IR3870MBF ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND unless otherwise specified) www.
DataSheet4U.
com • • • • • • ...


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