FP5139B
Asynchronous Boost Controller
General Description
The FP5139B is a boost topology switching regulator control I...
FP5139B
Asynchronous Boost Controller
General Description
The FP5139B is a boost topology switching
regulator control IC for battery-powered applications. The FP5139B includes a totem-pole single output stage for driving
NPN transistor or N-MOS, high precision reference voltage(0.5V) to compare output voltage with feedback amplifier, an internal duty time control for controlling the minimum duty cycle, programmable soft start with short circuit protection function and logic level control for operating mode or standby mode.
Features
Wide Supply Voltage Operating Range: 1.8 to 15V Precision Reference Voltage: 0.5V ±2% Low Current Consumption: 5.5mA in Operation Mode Low Current Consumption: 1μA in Standby Mode High Oscillator Frequency: 1MHz max. Totem-Pole Output with Adjustable ON / OFF Current (for
NPN Transistors or n-Channel MOSFET) Logic Level Control Stand-by Mode Function Programmable Soft Start Function (SS) Short Circuit Protection Function (SCP) Package: SOP-8L, TSSOP-8L and MSOP-8L
Applications
Digital Camera PDA Portable Equipment
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 1.0
1/18
FP5139B Function Block Diagram
VCC OSC
Reference voltage supply 1.25V
FB
0.6V 0.1V
S...