LP3853 - 3A Fast Ultra Low Dropout Linear Regulator

LP3853	3A Fast Ultra Low Dropout Linear Regulator

Overview

Diagrams

Parametrics

Documents

Order

Packaging

Tools

Reliability

Features

Ultra low dropout voltage

Stable with selected ceramic capacitors

Low ground pin current

Load regulation of 0.08%

10nA quiescent current in shutdown mode

Guaranteed output current of 3A DC

Available in TO-263 and TO-220 packages

Output voltage accuracy ± 1.5%

^Error flag indicates output status

Sense option improves load regulation

Overtemperature/overcurrent protection

−40°C to +125°C junction temperature range

Description
The LP3853/LP3856 series of fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3853/LP3856 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3853/LP3856 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 39mV at 300mA load current and 390mV at 3A load current.

Ground Pin Current: Typically 4mA at 3A load current.

Shutdown Mode: Typically 10nA quiescent current when the shutdown pin is pulled low.

^Error Flag: ^Error flag goes low when the output voltage drops 10% below nominal value.

SENSE: Sense pin improves regulation at remote loads.

Precision Output Voltage: Multiple output voltage options are available ranging from 1.8V to 5.0V with a guaranteed accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

Applications
Microprocessor power supplies

Stable with ceramic output capacitors

GTL, GTL+, BTL, and SSTL bus terminators

Power supplies for DSPs

SCSI terminator

Post regulators

High efficiency linear regulators

Battery chargers

Other battery powered applications

Also Recommended

LP38513▲ New! National's LP38k Family Of High

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LP38859▲ See More At LDO.NATIONAL.COM

Typical Application click for larger image

Block Diagram click for larger image

Typical Performance click for larger image

Parameters / Values	LP3853	LP38513	LP38853	LP38859
Output Current	3000 mA	3000 mA	3000 mA	3000 mA
Output Min	1.8, 2.5, 3.3, 5 Volt		0.8 Volt	1.2, 0.8 Volt
Input Min Voltage	2.5 Volt	2.25 Volt	1.04 Volt	1.55, 1.15 Volt
Input Max Voltage	7 Volt	5.5 Volt	5.5 Volt	5.5 Volt
Dropout Voltage	0.39 Volt	0.425 Volt	0.240 Volt	0.35 Volt
Adjustable Output	No	No	Yes	No
Quiescent Current	4 mA	10 mA	10 mA	10 mA
On/Off Pin	Yes	Yes	Yes	No
PowerGood / Error Flag	Yes	Yes	No	No
RegType	LDO	LDO	LDO	LDO
Temperature Min	-40 deg C	-40 deg C	-40 deg C	-40 deg C
Temperature Max	125 deg C	125 deg C	125 deg C	125 deg C
Output Voltage	1.8, 2.5, 3.3, 5 Volt	1.8 Volt		1.2, 0.8 Volt
Output Max	1.8, 2.5, 3.3, 5 Volt		1.8 Volt	1.2, 0.8 Volt

Datasheets
Title Size Date Other
Language

LP3853 3A Fast Ultra Low Dropout Linear Regulator 407
Kbytes 4-Mar-11 日本語

Part Number(s)
(NSID)

Top View

Availability

Current Reported Stock

Budgetary Pricing

Pack
Size

LP3853ES-1.8/NOPB

LP3853ES-1.8

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
ARROW	Worldwide	115
AVNET-EM	Worldwide	131
DIGI-KEY	Worldwide	186
TAYLOR	Americas	115

$2.83 each at 1K+ pcs

rail
of
45

LP3853ES-2.5/NOPB

LP3853ES-2.5

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
ARROW	Worldwide	45
AVNET-EM	Worldwide	197
DIGI-KEY	Worldwide	160
RS COMPONENTS	Worldwide	6
TAYLOR	Americas	45

$2.83 each at 1K+ pcs

rail
of
45

LP3853ES-3.3/NOPB

LP3853ES-3.3

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
ARROW	Worldwide	171
AVNET-EM	Worldwide	80
DIGI-KEY	Worldwide	845
RS COMPONENTS	Worldwide	33
TAYLOR	Americas	173

$2.83 each at 1K+ pcs

rail
of
45

LP3853ES-5.0/NOPB

LP3853ES-5.0

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
AVNET-EM	Worldwide	70
DIGI-KEY	Worldwide	66
MOUSER	Worldwide	200
NEWARK	Americas	32
RS COMPONENTS	Worldwide	2

$2.83 each at 1K+ pcs

rail
of
45

LP3853ESX-1.8/NOPB

LP3853ESX-1.8

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGI-KEY		Worldwide	0

$2.83 each at 1K+ pcs

reel
of
500

LP3853ESX-2.5/NOPB

LP3853ESX-2.5

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGI-KEY		Worldwide	0

$2.83 each at 1K+ pcs

reel
of
500

LP3853ESX-3.3/NOPB

LP3853ESX-3.3

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGI-KEY		Worldwide	0

$2.83 each at 1K+ pcs

reel
of
500

LP3853ESX-5.0/NOPB

LP3853ESX-5.0

RoHS Status

TO-263

Full production
Lead Time: 6 weeks

Distributor		Region	Qty
DIGI-KEY		Worldwide	0

$2.83 each at 1K+ pcs

reel
of
500

LP3853ET-1.8/NOPB

LP3853ET-1.8

RoHS Status

TO-220

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
DIGI-KEY	Worldwide	39
MOUSER	Worldwide	135
RS COMPONENTS	Worldwide	5

$2.83 each at 1K+ pcs

rail
of
45

LP3853ET-2.5/NOPB

LP3853ET-2.5

RoHS Status

TO-220

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
DIGI-KEY	Worldwide	135
MOUSER	Worldwide	135
RS COMPONENTS	Worldwide	40

$2.83 each at 1K+ pcs

rail
of
45

LP3853ET-3.3/NOPB

LP3853ET-3.3

RoHS Status

TO-220

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
AVNET-EM	Worldwide	169
DIGI-KEY	Worldwide	203
RS COMPONENTS	Worldwide	30

$2.83 each at 1K+ pcs

rail
of
45

LP3853ET-5.0/NOPB

LP3853ET-5.0

RoHS Status

TO-220

Full production
Lead Time: 6 weeks

Distributor	Region	Qty
AVNET-EM	Worldwide	75
DIGI-KEY	Worldwide	573
MOUSER	Worldwide	135

$2.83 each at 1K+ pcs

rail
of
45

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 LP3853.

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 LP3853 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
LP3853ES-1.8/NOPB LP3853ES-1.8	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -1.8
LP3853ES-2.5/NOPB LP3853ES-2.5	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -2.5
LP3853ES-3.3/NOPB LP3853ES-3.3	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -3.3
LP3853ES-5.0/NOPB LP3853ES-5.0	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -5.0
LP3853ESX-1.8/NOPB LP3853ESX-1.8	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -1.8
LP3853ESX-2.5/NOPB LP3853ESX-2.5	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -2.5
LP3853ESX-3.3/NOPB LP3853ESX-3.3	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -3.3
LP3853ESX-5.0/NOPB LP3853ESX-5.0	1448.647 1449.868	TO-263	5	3 3	245 235	Detail	Download	N/A	NSUZXYTTE# LP3853ES -5.0
LP3853ET-1.8/NOPB LP3853ET-1.8	1957.896 1908.876	TO-220	5	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LP3853ET -1.8
LP3853ET-2.5/NOPB LP3853ET-2.5	1957.896 1908.876	TO-220	5	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LP3853ET -2.5
LP3853ET-3.3/NOPB LP3853ET-3.3	1957.896 1908.876	TO-220	5	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LP3853ET -3.3
LP3853ET-5.0/NOPB LP3853ET-5.0	1957.896 1908.876	TO-220	5	1 1	NA NA	Detail	Download	N/A	NSUZXYTTE# LP3853ET -5.0

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 LP3853.

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 LP3853 is located at RoHS Status.

CAD Symbols and Models
Download LP3853 CAD Symbols

Models
N/A

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)

LP3853ES-1.8 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ES-2.5 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ES-3.3 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ES-5.0 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ESX-1.8 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ESX-2.5 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ESX-3.3 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ESX-5.0 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ET-1.8 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ET-2.5 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ET-3.3 CS065 2 47473 43 0 5527000 1 1568301341

LP3853ET-5.0 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 LP3853.

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 LP3853 is located at RoHS Status.

[Information as of 9-Feb-2012]

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