Features Ultra low dropout voltage (210 mV @ 3A typ) Low ground pin current Load regulation of 0.04%/A 60 nA typical quiescent current in shutdown 1.5% output accuracy (25°C) TO-220, TO-263 packages Over temperature/over current protection -40°C to +125°C junction temperature range Description The LP3883 is a high-current, fast-response regulator which can maintain output voltage regulation with minimum input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: Vbias provides voltage to drive the gate of the N-MOS power transistor, while Vin is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low Vin voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability. The fast transient response of these devices makes them suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The parts are available in TO-220 and TO-263 packages. Dropout Voltage: 210 mV (typ) @ 3A load current. Ground Pin Current: 3 mA (typ) at full load. Shutdown Current: 60 nA (typ) when S/D pin is low. Precision Output Voltage: 1.5% room temperature accuracy. Applications DSP Power Supplies Server Core and I/O Supplies Linear Power Supplies for PC Add-in-Cards Set-Top Box Power Supplies Microprocessor Power Supplies High Efficiency Linear Power Supplies SMPS Post-Regulators

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

Datasheets

Title		Size	Date	Other Language
	LP3883 3A Fast-Response Ultra Low Dropout Linear Regulators	819 Kbytes	2-Feb-06

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LP3883ES-1.2/NOPB LP3883ES-1.2 RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 97 AVNET-EM Worldwide 130 DIGI-KEY Worldwide 913 NEWARK Americas 16 RS COMPONENTS Worldwide 396 TAYLOR Americas 1941	$2.41 each at 1K+ pcs	rail of 45
LP3883ES-1.5/NOPB LP3883ES-1.5 RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 225 AVNET-EM Worldwide 142 DIGI-KEY Worldwide 63 RS COMPONENTS Worldwide 106 TAYLOR Americas 225	$2.41 each at 1K+ pcs	rail of 45
LP3883ESX-1.2/NOPB LP3883ESX-1.2 RoHS Status	TO-263	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 1000 DIGI-KEY Worldwide 0 MOUSER Worldwide 495 TAYLOR Americas 1000 TECHMOSA Asia Pacific 5470	$2.41 each at 1K+ pcs	reel of 500

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LP3883ES-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ESX-1.5	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ESX-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.2	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.5	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009

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 LP3883.

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 LP3883 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
LP3883ES-1.2/NOPB LP3883ES-1.2	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3883ES -1.2
LP3883ES-1.5/NOPB LP3883ES-1.5	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3883ES -1.5
LP3883ESX-1.2/NOPB LP3883ESX-1.2	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3883ES -1.2

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 LP3883.

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 LP3883 is located at RoHS Status.

CAD Symbols and Models Download LP3883 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LP3883ES-1.2	CS065	2	47473	43	0	5527000	1	1568301341
LP3883ES-1.5	CS065	2	47473	43	0	5527000	1	1568301341
LP3883ESX-1.2	CS065	2	47473	43	0	5527000	1	1568301341

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 LP3883.

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 LP3883 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LP3883ES-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ESX-1.5	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ESX-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.2	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.5	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP3883ET-1.8	NONE	NATIONAL SEMICONDUCTOR	01 Dec 2009