相关商品： AT1366 OCP2150 APS1006 LM3671 LM3670 XC9226

DESCRIPTION
The TP3305 is a constant frequency, current mode, PWM  step-down  converter.  The  device  integrates  a main  switch  and  a  synchronous  rectifier  for  high efficiency. The 2.2V to 6.5V input voltage range makes the TP3305 ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) battery or3-cell NiMH/ NiCd batteries. The output voltage can be regulated as low as 0.6V. The TP3305 supports up to 650mA load current and can also run at 100% duty cycle for low dropout applications, extending battery life in portable systems.
Switching  frequency  is  internally  set  at  1.5MHz, allowing the use of small surface mount inductor and capacitors. The internal synchronous switch increases efficiency  while  eliminate  the  need  for  an  external Schottky diode. The TP3305 is available in a low profile 5 lead SOT23-5 package.

FEATURES
* High Efficiency : 95%
* 1.5MHz Constant Switching Frequency
* 650mA Available Load Current
* 220µA Typical Quiescent Current
* 2.2V to 6.5V Input Voltage Range
* Adjustable Output Voltage as Low as 0.6V
* 100% Duty Cycle Low Dropout Operation
* No Schottky Diode Required
* Short Circuit and Thermal Protection
* Over Voltage Protection
* <1µA Shutdown Current
* Available in SOT23-5 Package
* RoHS Compliant and 100% Lead(Pb)-Free

Applications
* Portable Media Players/ MP3 Players
* Digital Still and Video Cameras
* Portable Instruments
* WLAN PC Cards

 

 

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