MIC23201

2MHz PWM 2A Buck Regulator with

Hyper Speed Control™

Hyper Speed Control is a trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademark Amkor Technology Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

August 2012

M9999-082912-A

General Description

The MIC23201 is a high efficiency 2MHz 2A synchronous

buck regulator with Hyper Speed Control. Micrel’s Hyper

Speed Control provides 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 tiny 3mm x

3mm MLF

requires only three external components.

The MIC23201 is designed for use with a very small

inductor, down to 1µH, and an output capacitor as small as

22µF that enables a total solution size, less than 1.5mm

height.

The MIC23201 provides a constant switching frequency

around 2MHz while achieving peak efficiencies up to 90%.

The MIC23201 is available in 10-pin 3mm x 3mm MLF

package with an operating junction temperature range

from –40

C to +125C.

Datasheets and support documentation can be found on

Features

 Input voltage: 2.7V to 5.5V

 2A output current

 Up to 90% peak efficiency

 Programmable Soft-Start

 Power Good Indicator

 2MHz switching frequency

 Safe for pre-biased output

 Ultra fast transient response

 Low voltage output ripple, 16mV at full load

 Fully integrated MOSFET switches

 0.01µA shutdown current

 Thermal shutdown and current limit protection

 Output Voltage as low as 0.95V

 10-pin 3mm x 3mm MLF

 –40C to +125C operating junction temperature range

Applications

 Low Voltage Point of Load

 Blu Ray DVD Players

 Networking Equipment

 Set Top Boxes

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Typical Application

vs. Output Current

0

10

20

30

40

50

60

70

80

90

100

0

0.6

1.2

1.8

2.4

3

OUTPUT CURRENT (A)

2.5V

1.8V

1.5V

1.2V

0.95V