Features 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 0.8mm 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. Applications Cell Phone Camera Flash General Purpose Regulated Voltage Output, High Current Supply

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LM2753 High Power Switched Capacitor Voltage Convertor/Flash LED Driver	1177 Kbytes	10-Mar-07

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM2753SD/NOPB LM2753SD RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 1081 FARNELL Europe and Asia 960 MOUSER Worldwide 994 NEWARK Americas 960 RS COMPONENTS Worldwide 10	$0.76 each at 1K+ pcs	reel of 1000
LM2753SDX/NOPB LM2753SDX RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$0.76 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM2753.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM2753 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM2753SD/NOPB LM2753SD	21.112 21.182	LLP	10	1 1	260 260	Detail	Download	N/A	ZXYTT D004B
LM2753SDX/NOPB LM2753SDX	21.112 21.182	LLP	10	1 1	260 260	Detail	Download	N/A	ZXYTT D004B

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM2753.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM2753 is located at RoHS Status.

CAD Symbols and Models Download LM2753 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM2753SD	CMOS7	0	21301	0	0	1584000	3	449464325
LM2753SDX	CMOS7	0	21301	0	0	1584000	3	449464325

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM2753.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM2753 is located at RoHS Status.