FEATURES
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
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.