Microchip Technology MIC22705
The MIC22705 is a highly efficient, 7A, integrated switch, synchronous buck (step-down) regulator. The MIC22705 is optimized for highest efficiency, achieving more than 95% efficiency while still switching at 1 MHz over a broad range. The ultra-high speed control loop keeps the output voltage within regulation even under extreme transient load swings commonly found in FPGAs and low-voltage ASICs.FEATURES
● Input Voltage Range: 2.9V to 5.5V● Output Voltage Adjustable Down to 0.7V
● Output Load Current Up to 7A
● Safe Start-Up into a Pre-Biased Output Load
● Full Sequencing and Tracking Ability
● Power Good Output
● Efficiency >95% Across a Broad Load Range
● Ultra-Fast Transient Response
● Easy RC Compensation
● 100% Maximum Duty Cycle
● Fully Integrated MOSFET Switches
● Thermal Shutdown and Current-Limit Protection
● 24-Pin 4 mm x 4 mm QFN
● –40°C to +125°C Junction Temperature Range
APPLICATIONS
● High Power Density Point-of-Load Conversion● Servers, Routers, and Base Stations
● Blu-Ray/DVD Players and Recorders
● Computing Peripherals
● FPGAs, DSP, and Low Voltage ASIC Power
GENERAL DESCRIPTION
The output voltage is pre-bias safe and can be adjusted down to 0.7V to address all low-voltage power needs. The MIC22705 offers a full range of sequencing and tracking options. The Enable/Delay (EN/DLY) pin, combined with the Power Good (PG) pin, allows multiple outputs to be sequenced in any way during turn-on and turn-off.