General Description
The Micrel MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4742 operates at 2MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.

Features
• 2.9 to 5.5V supply voltage
• 2MHz PWM mode
• 2A Dual output
• Greater than 92% efficiency
• 100% maximum duty cycle
• Adjustable output voltage option down to 0.6V
• Ultra-fast transient response
• Ultra-small external components Stable with a 1µH inductor and a 4.7µF output capacitor
• Fully integrated 2A MOSFET switches
• Micro-power shutdown
• Thermal shutdown and current limit protection
• Available in a 3mm x 3mm 16-pin MLF® and 16-pin TSSOP
• –40°C to +125°C junction temperature range

Applications
• Broadband: xDSL modems
• Automotive satellite radios
• HD STB, DVD/TV recorder
• Computer peripherals: printers and graphic cards
• FPGA/ASIC
• General point of load