同步升降压IC

同步升降压IC

同步升降压IC

The XA3106 is high efficiency, fixed frequency,Buck- Boost DC/DC converters which operates from input voltages above, below or equal to the output voltage. The devices are suitable for single lithium-ion, multicell alkaline or NiMH applications where the output voltage is within the battery voltage range.

The switching frequencies up to 1.5 MHz could be fixed by employing an external resistor, and the oscillator could be synchronized to an external clock. the quiescent current is 1mA, and this feature maximizing the battery life in portable applications.

Other features include a 1 μA shutdown, soft-start control, thermal shutdown and current limit. The XA3106 converters are available in the 10-pin thermally enhanced MSOP packages (or upon request).

  Features

Synchronous rectification: Up to 95% efficiency

Single inductor

Fixed frequency operation with battery

voltages above, below or equal to the output

Quiescent current: 1mA (50uA low power mode: mode pin high)

Up to 600mA continuous output current

1.8V to 5.5V input and output voltage range

Programmable oscillator frequency from

350kHz to 1. 5MHz

No Schottky Diodes required

Vout disconnected from K during shutdown

Shutdown current: d< 1μA

Package: small thermally enhanced 10-pin MSOP

  Applications

Digital cameras and Wireless handsets

Palmtop computers

Handheld instruments

MP3/MP4 players

 






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同步升降压IC