MIC4782 Series

Dual 1.8MHz 2A Buck Regulator

Catalog

Dual 1.8MHz 2A Buck Regulator

Part	Topology	Current - Output	Supplier Device Package	Voltage - Input (Max) [Max]	Output Configuration	Voltage - Output (Min/Fixed)	Voltage - Input (Min) [Min]	Output Type	Package / Case	Function	Frequency - Switching	Mounting Type	Synchronous Rectifier	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]
Microchip Technology MIC4782YML-TR	Buck	2 A	16-MLF® (4x4)	6 V	Positive	0.6 V	3 V	Adjustable	16-MLF® 16-VQFN Exposed Pad	Step-Down	1.8 MHz	Surface Mount		2	-20 °C	125 ¯C

Catalog

Dual 1.8MHz 2A Buck Regulator

Key Features

• * 3.0V 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 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

• * -20°C to +125°C junction temperature range

Description

The 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 compensation technique allows a closed loop bandwidth of over 200kHz. The low on-resistance internal P-Channel MOSFET of the MIC4782 allows efficiencies over 92%, reduces external components 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 low-dropout conditions.