DatasheetsPDF.com

LM2753

National Semiconductor
Part Number LM2753
Manufacturer National Semiconductor
Description High Power Switched Capacitor Voltage Convertor/Flash LED Driver
Published Jun 8, 2009
Detailed Description LM2753 High Power Switched Capacitor Voltage Convertor/Flash LED Driver February 2005 LM2753 High Power Switched Capac...
Datasheet PDF File LM2753 PDF File

LM2753
LM2753

Overview
LM2753 High Power Switched Capacitor Voltage Convertor/Flash LED Driver February 2005 LM2753 High Power Switched Capacitor Voltage Convertor/Flash www.
datasheet4u.
com LED Driver General Description The LM2753 is capable of driving a Flash LED with a pulsed current of 400mA at an input voltage of 3.
6V.
A switched capacitor doubler, the LM2753 provides a regulated 5V output (VOUT) over an input supply range of 3.
0V to 5.
5V.
The switched output, IOUT, takes less than 10ns to turn on and provide maximum current to a Flash LED.
Flash LED current is set via a ballast resistor.
Continuous illumination current (Torch Mode) is programmed by connecting a resistor between IOUT and VOUT.
This device uses only three small, low-cost ceramic capacitors.
LM2753 uses Pulse Frequency Modulation (PFM) regulation.
Typical operating frequency is 725kHz.
Under no-load conditions, LM2753 operates on only 60µA.
If the output is connected to ground, the charge pump stays in the gain of 1 which helps limit the input current to 300mA (typ.
) LM2753 is available in a 10-pin No Pullback Leadless Leadframe Package: LLP-10.
Features n n n n n n n n n Input Voltage Range: 3.
0V to 5.
5V Regulated 5V Output 250mA Output Current with a 3.
6V input 400mA Pulsed Output Current (up to 500ms duration) 60µA (typ.
) Quiescent Current PFM Regulation Inductor-less solution: requires only 3 small capacitors < 1µA Typical Shutdown Current 10-pin LLP Package (No Pullback): 3mm x 3mm x 0.
75mm Applications n Cell Phone Camera Flash n General Purpose Regulated Voltage Output, High Current Supply Typical Application Circuit 20140601 © 2005 National Semiconductor Corporation DS201406 www.
national.
com LM2753 Connection Diagram LM2753 10-Pin LLPPackage (LLP10) No Pullback 3mm X 3mm x 0.
75mm NS Package Number SDA10A www.
datasheet4u.
com 20140605 Pin Descriptions Pin # 1 2 3 4 5 6 7 8 9 10 Name C1+ VIN C1FLASH GND EN GND IOUT VOUT GND Flying capacitor connection.
Input Voltage Connection.
Input Voltage Range: 3...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)