MIC4782 Datasheet | Micrel Semiconductor

Description The Micrel MIC4782 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A output current. The MIC4782 operates at 1.8MHz. A proprietary internal pensation technique allows a closed loop bandwidth of over 200k Hz. The low on-resistance internal P-Channel MOSFET of the MIC4782 allows efficiencies over 92%, reduces external ponents count and eliminates the need for an expensive current sense resistor. The MIC4782 operates from 3.0V to 6.0V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in lowdropout conditions. The MIC4782 is available in the exposed pad 16-pin 3mm x 3mm MLF® with a junction operating range from - 20°C to +125°C. All support documentation can be found on Micrel’s web site at: .micrel.. Features - 3.0 to 6.0V supply voltage - 1.8MHz 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 ponents - 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 × 3mm 16-pin MLF® - - 20°C to +125°C junction temperature range Applications - Broadband: x DSL modems - Automotive satellite radios - HD STB, DVD/TV recorder - puter peripherals: printers and graphic cards - FPGA/ASIC - General point-of-load Typical Application 2A, 1.8MHz Dual Buck Regulator EFFICIENCY (%) 5.0VIN, 3.3VOUT...