现货热卖 降压DC-DC APS2406 雅创威 代理 Chipown 原装

现货热卖 降压DC-DC APS2406 雅创威 一级代理 Chipown 原装正品

Description
T he APS2406is a hi gh effic ie nc y mo no li t hic
synchronous buck regulator using a constant frequency,
current mode architecture. The device is available in an
adjustable version and fixed output voltages, such as
1.2V, 1.5V, 1.8V, etc. Supply current with no load is
300uA and drops to <1uA in shutdown. The 2.5V to
6.5V input voltage range makes the APS2406ideally
suited for single Li-Ion, two to four AA battery-powered
applications. 100% duty cycle provides low dropout
operation, extending battery life in portable systems.
PWM pulse skipping mode operation provides very low
output ripple voltage for noise sensitive applications.
Switching frequency is internally set at 1.5MHz,
allowing the use of small surface mount inductors and
capacitors. The internal synchronous switch increases
efficiency and eliminates the need for an external
Schottky diode. Low output voltages are easily
supported with the 0.6V feedback reference voltage. The
APS2406is available in a small SOT package.
Applications
? Cellular and Smart Phones
? Microprocessors and DSP Core Supplies
? Wireless and DSL Modems
? PDAs
? MP3/ MP4 /PMP Player
? Digital Still and Video Cameras
? Portable Instruments
Features
? High Efficiency: Up to 96%
? 1.5MHz Constant Switching Frequency
? 800mAOutput Current at VIN=3V
? Integrated Main switch and synchronous rectifier.
No Schottky Diode Required
? 2.5V to6.5V Input Voltage Range
? Output Voltage as Low as 0.6V
? 100% Duty Cycle in Dropout
? QuiescentCurrent: 300µA(input < 4.2V)
? Slope Compensated Current Mode Control for
Excellent Line and Load Transient Response
? Short Circuit Protection
? <1uA Shutdown Current
? Soft start
? Space Saving 5-Pin SOT23 package