MIC4742 Series

Dual 2 MHz 2A Buck Regulator

Catalog

Dual 2 MHz 2A Buck Regulator

Part	Voltage - Output (Max) [Max]	Voltage - Output (Min/Fixed)	Frequency - Switching	Output Type	Current - Output	Number of Outputs	Package / Case	Mounting Type	Voltage - Input (Min) [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Output Configuration	Supplier Device Package	Voltage - Input (Max) [Max]	Topology	Synchronous Rectifier	Function
Microchip Technology MIC4742YML-TR	5.5 V	0.6 V	2 MHz	Adjustable	2 A	2	16-MLF® 16-VQFN Exposed Pad	Surface Mount	2.9 V	-40 °C	125 ¯C	Positive	16-MLF® (4x4)	5.5 V	Buck		Step-Down

Catalog

Dual 2 MHz 2A Buck Regulator

Key Features

• * 2.9V 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

• * -40°C to +125°C junction temperature range

Description

The 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. The low on-resistance internal P-channel MOSFET of the MIC4742 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor. The MIC4742 operates from 2.9V to 5.5V 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 low-dropout conditions. The MIC4742 is available in ETSSOP-16 packages with a junction operating range from -40°C to +125°C.