Microchip MIC23030 Bedienungsanleitung

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 2021 Microchip Technology Inc.DS20006488A-page 1

MIC23030

Features

•Input Voltage: 2.7V to 5.5V

•400 mA Output Current

•Up to 91% Efficiency and 83% at 1mA

•21 µA Typical Quiescent Current

•8 MHz PWM Operation in Continuous Mode

•Ultra-Fast Transient Response

•Low Voltage Output Ripple

-14 mV

PP

Ripple in HyperLight Load

®

Mode

-5 mV Output Voltage Ripple in Full PWM

Mode

•Fully Integrated MOSFET Switches

•0.01 µA Shutdown Current

•Thermal Shutdown and Current-Limit Protection

•Fixed and Adjustable Output Voltage Options

Available

•1.6 mm x 1.6 mm 6-Lead TDFN Package

•–40°C to +125°C Junction Temperature Range

Applications

•Mobile Handsets

•Portable Media/MP3 Players

•Portable Navigation Devices (GPS)

•WiFi/WiMax/WiBro Modules

•Digital Cameras

•Wireless LAN Cards

•USB-Powered Devices

•Portable Applications

General Description

The MIC23030 is a high-efficiency, 8MHz, 400mA

synchronous buck regulator with HyperLight Load

®

mode. HyperLight Load

®

provides very high efficiency

at light loads and ultra-fast transient response that is

perfectly suited for supplying processor core voltages.

An additional benefit of this proprietary architecture is

the very low output ripple voltage throughout the entire

load range with the use of small output capacitors. The

tiny 1.6mm x 1.6mm TDFN package saves precious

board space and requires only three external

components.

The MIC23030 is designed for use with a very small

inductor, down to 0.47 µH, and an output capacitor as

small as 2.2 µF that enables a sub 1mm height.

The MIC23030 has a very low quiescent current of

21µA and achieves as high as 83% efficiency at 1mA.

At higher loads, the MIC23030 provides a constant

switching frequency around 8MHz while achieving

peak efficiencies up to 91%.

The MIC23030 is available in a 6-pin 1.6mm x 1.6mm

TDFN package with an operating junction temperature

range of –40°C to +125°C.

Typical Application Circuit

Fixed Output MIC23030

SW

SNS

PGND

GN

D

V

OUT

AGND

U1 MIC23030

VIN

V

IN

2

.7V to 5.5V

EN

C1

C2

L1

EN

GND

1

4

2

56

3

50

60

70

80

90

100

110100100

0

EFFICIENCY (%)

OUTPUT CURRENT (mA)

L = 0.47μH

C

OUT

= 4.7μF

V

IN

= 3.0V

V

IN

= 3.6V

V

IN

= 4.2V

Efficiency V

OUT

= 2.5V

8 MHz PWM 400 mA Buck Regulator with HyperLight Load

®

Produktspezifikationen