IR3821AMPBF Datasheet | International Rectifier

Features - - - - - - - - - - - - - - HIGHLY INTEGRATED 9A Description The IR3821A Sup IRBuck TM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard switching controller and MOSFETs make the IR3821A a space-efficient solution, providing accurate power delivery for low output voltage applications. The IR3821A operates from a single 4.5V to 14V input supply and generates an output voltage adjustable from 0.6V to 0.8- Vin at loads up to 9A. A versatile regulator offering programmability of startup time, power good threshold and current limit, the IR3821A’s fixed 300k Hz switching frequency allows the use of small external ponents. The IR3821A also Features important protection functions, such as Pre-Bias startup, hiccup current limit and thermal shutdown to provide the required system level security in the event of fault conditions. WIDE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR Wide Input Voltage Range 2.5V to 21V Wide Output Voltage Range 0.6V to 12V Continuous 9A Load Capability 300k Hz High Frequency Operation Programmable Over-Current Protection Programmable PGood Output Hiccup Current Limit Precision Reference Voltage (0.6V) Programmable Soft-Start Pre-Bias Start-up Thermal Protection Thermally Enhanced Package Small Size 5mmx6mm QFN Pb-Free (Ro HS pliant) Applications - - - - - - - - Distributed Point-of-Loads Server and Workstations Embedded Systems Storage Systems DDR Applications Graphics Cards Game Consoles puting Peripheral Voltage Regulators Fig. 1. Typical application diagram 01/08/08 1 PD-60332 .. IR3821AMPb F -0.3V to 24V -0.3V to 16V -0.3V to 30V -0.3V to 30V -0.3V to 16V -0.3V to 3.5V 10m A -0.3V to +0.3V -65°C To 150°C -40°C To 150°C JEDEC, JESD22-A114 JEDEC Level 3 @ 260o C ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND) - - - - - - - - - -...