MIC23031 Series

4MHz 400mA HyperLight Load® Synchronous Buck Regulator

Catalog

4MHz 400mA HyperLight Load® Synchronous Buck Regulator

Part	Current - Output	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Topology	Number of Outputs	Supplier Device Package	Voltage - Output (Min/Fixed)	Output Type	Package / Case	Frequency - Switching	Output Configuration	Voltage - Input (Max) [Max]	Function	Voltage - Input (Min) [Min]
Microchip Technology MIC23031-CYMT-TR	400 mA	Surface Mount	-40 °C	125 ¯C	Buck	1	6-TMLF® (1.6x1.6)	1 V	1.81 mOhm	6-TMLF® 6-UFDFN Exposed Pad	4 MHz	Positive	5.5 V	Step-Down	2.7 V
Microchip Technology MIC23031-GYMT-TR	400 mA	Surface Mount	-40 °C	125 ¯C	Buck	1	6-TMLF® (1.6x1.6)	1.8 V	1.81 mOhm	6-TMLF® 6-UFDFN Exposed Pad	4 MHz	Positive	5.5 V	Step-Down	2.7 V
Microchip Technology MIC23031-FYMT-TR	400 mA	Surface Mount	-40 °C	125 ¯C	Buck	1	6-TMLF® (1.6x1.6)	1.5 V	1.81 mOhm	6-TMLF® 6-UFDFN Exposed Pad	4 MHz	Positive	5.5 V	Step-Down	2.7 V

Catalog

4MHz 400mA HyperLight Load® Synchronous Buck Regulator

Key Features

• * Input voltage range: 2.7V to 5.5V

• * 400mA output current

• * Up to 93% efficiency and 88% at 1mA

• * 21µA typical quiescent current

• * 4MHz PWM operation in continuous mode

• * Ultra fast transient response

• * Low voltage output ripple

• * 0.01µA shutdown current

• * Fixed and adjustable output voltage options available

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

Description

The MIC23031 is a high efficiency 4MHz 400mA synchronous buck regulator with HyperLight Load® mode. HyperLight Load® provides very high efficiency at light loads and ultra-fast transient response which is perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The MIC23031 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2 µF that enables a sub-1mm height. The MIC23031 has a very low quiescent current of 21µA and achieves as high as 88% efficiency at 1mA. At higher loads, the MIC23031 provides a constant switching frequency around 4MHz while achieving peak efficiencies up to 93%.