Használati útmutató Microchip MIC23031

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2021 Microchip Technology Inc. DS20006538A-page 1
MIC23031
Features
Input Voltage: 2.7V to 5.5V
400 mA Output Current
Up to 93% Efficiency and 88% at 1 mA
21 µA Typical Quiescent Current
4 MHz PWM Operation in Continuous Mode
Ultra-Fast Transient Response
Low Voltage Output Ripple
- 20 mVPP Ripple in HyperLight Load® Mode
- 3 mV Output Voltage Ripple in Full PWM
Mode
0.01 µA Shutdown Current
MIC23031 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 MIC23031 is a high-efficiency, 4 MHz, 400 mA
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 1.6 mm x 1.6 mm TDFN package saves precious
board space and requires only three external
components.
The MIC23031 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 1 mm height.
The MIC23031 has a very low quiescent current of
21 µA and achieves as high as 88% efficiency at 1 mA.
At higher loads, the MIC23031 provides a constant
switching frequency around 4 MHz while achieving
peak efficiencies up to 93%.
The MIC23031 is available in a 6-pin 1.6 mm x 1.6 mm
TDFN package with an operating junction temperature
range of –40°C to +125°C.
Typical Application Circuit
Efficiency VOUT = 2.5V
4 MHz PWM 400 mA Buck Regulator with HyperLight Load®

Termékspecifikációk

Márka: Microchip
Kategória: nincs kategorizálva
Modell: MIC23031

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