Microchip Technology MIC23250-AAYMT-TR

Description
The MIC23250 is a high-efficiency 4MHz dual 400mA synchronous buck regulator with HyperLight Load™ mode. HyperLight Load™ provides high efficiency at light loads and ultra-fast transient response, making it suitable for supplying processor core voltages. It features low output ripple voltage throughout the entire load range with small output capacitors. The fixed output MIC23250 comes in a compact 2mm x 2mm Thin MLF package, requiring only 6 additional external components to drive both outputs up to 400mA each.

Features
Input voltage: 2.7V to 5.5V
Dual output current: 400mA/400mA
HyperLight Load™:
Up to 94% peak efficiency and 85% efficiency at 1mA
33μA dual quiescent current
1pH inductor with a 4.7uF capacitor
4MHz in PWM operation
Ultra-fast transient response
Low voltage output ripple:
20mVpp in HyperLight Load™ mode
3mV output voltage ripple in full PWM mode
0.01μA shutdown current
Fixed output: 10-pin 2mm x 2mm Thin MLF®
Adjustable output: 12-pin 2.5mm x 2.5mm Thin MLF®
-40°C to 125°C junction temperature range

Applications
Mobile handsets
Portable media players
Portable navigation devices (GPS)
WiFi/WiMax/WiBro modules
Digital cameras
Wireless LAN cards
USB Powered Devices