Description
SD46520 400KHZ 2A STEP-DOWN DC-DC CONVERTER .
The SD46520 is a step-down PWM control converter with a built-in internal power MOSFET.
Features
* 2A output current
* 0.2Ω internal power MOSFET
* Stable with low ESR output ceramic capacitor
* Up to 95% conversion efficiency
* shutdown mode
* 400kHz fixed frequency
* Thermal shutdown
* Cycle-by-cycle over current protection
* 4.75-18V input voltage range
Applications
* Distributed power system
* Battery charger
* TFT LCD Monitors
* Portable DVD
* Set-Top Box
HANGZHOU SILAN MICROELECTRONICS CO. ,LTD
Http://www. silan. com. cn
REV:1.0 2009.04.07 Page 1 of 8
BLOCK DIAGRAM
IN
2
Internal 3.3V Regulators
Current Sense
+ + Amplifier ∑
EN
7
CLK O