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 Products > Analog - Regulators > Linear Regulators - Low Dropout Voltage > Positive Voltage - Fixed > LP3961

LP3961  Product Folder

800mA Fast Ultra Low Dropout Linear Regulator
  

See Also:		   
LP3871 - UTILIZES SMALLER INPUT AND OUTPUT CAPACITORS
     LP3881 - FOR INPUT VOLTAGES AS LOW AS 1.5V, 1.8V, 2.0V AND 2.5V
Generic P/N 3961
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics		 Application
Notes

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 125 
Multiple Output Capability No 
On/Off Pin Yes 
Error Flag Yes 
InputMin Voltage (Volt) 2.50 
InputMax Voltage (Volt) 7 
Output Current (mA) 800 
Dropout Voltage (Volt) .24 
Quiescent Current (mA) - 
SecondaryOutput Voltage (Volt) - 
SecondaryOutput Current (Amp) - 
RegType LDO 
Output Voltage (Volt) 1.80, 2.50, 3.30, 5 
Watchdog No 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LP3961 LP3964 800mA Fast Ultra Low Dropout Linear Regulators 532 Kbytes 29-May-03 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LP3961EMP-1.8SOT-2235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.01reel
of
1000		XYTT
LBAB
15-17 weeks50000
LP3961EMP-2.5SOT-2235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.01reel
of
1000		XYTT
LBBB
15-17 weeks50000
LP3961EMP-3.3SOT-2235StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.01reel
of
1000		XYTT
LAZB
15-17 weeks50000
LP3961EMP-5.0SOT-2235StatusFull productionN/AN/A24 Hour Samples
Buy Now		1K+$1.01reel
of
1000		XYTT
LBSB
15-17 weeks50000
LP3961EMPX-1.8SOT-2235StatusFull productionN/AN/A 
Buy Now 		1K+$1.01reel
of
2000		XYTT
LBAB
15-17 weeks50000
LP3961EMPX-2.5SOT-2235StatusFull productionN/AN/A 
Buy Now		1K+$1.01reel
of
2000		XYTT
LBBB
15-17 weeks50000
LP3961EMPX-3.3SOT-2235StatusFull productionN/AN/A 1K+$1.01reel
of
2000		XYTT
LAZB
15-17 weeks50000
LP3961EMPX-5.0SOT-2235StatusFull productionN/AN/A 1K+$1.01reel
of
2000		XYTT
LBSB
15-17 weeks50000
LP3961ET-1.8TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ET
-1.8
12-14 weeks50000
LP3961ET-2.5TO 2205StatusFull productionN/AN/A 
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ET
-2.5
12-14 weeks50000
LP3961ET-3.3TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ET
-3.3
12-14 weeks50000
LP3961ET-5.0TO 2205StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ET
-5.0
12-14 weeks50000
LP3961ES-1.8TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ES
-1.8
13-15 weeks50000
LP3961ES-2.5TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ES
-2.5
13-15 weeks50000
LP3961ES-3.3TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ES
-3.3
13-15 weeks50000
LP3961ES-5.0TO 2635StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$1.15rail
of
45		NSUZXYTT
LP3961ES
-5.0
13-15 weeks50000
LP3961ESX-1.8TO 2635StatusFull productionN/AN/A 1K+$1.15reel
of
500		NSUZXYTT
LP3961ES
-1.8
13-15 weeks50000
LP3961ESX-2.5TO 2635StatusFull productionN/AN/A 1K+$1.15reel
of
500		NSUZXYTT
LP3961ES
-2.5
13-15 weeks50000
LP3961ESX-3.3TO 2635StatusFull productionN/AN/A 
Buy Now		1K+$1.15reel
of
500		NSUZXYTT
LP3961ES
-3.3
13-15 weeks50000
LP3961ESX-5.0TO 2635StatusFull productionN/AN/A 
Buy Now		1K+$1.15reel
of
500		NSUZXYTT
LP3961ES
-5.0
13-15 weeks50000

General Description

The LP3961/LP3964 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 fast to step changes in load which makes them suitable for low voltage microprocessor applications. The LP3961/LP3964 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3961/LP3964 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 24mV at 80mA load current and 240mV at 800mA load current.

Ground Pin Current: Typically 4mA at 800mA load current.

Shutdown Mode: Typically 15µA quiescent current when the shutdown pin is pulled low.

Error# Flag: Error# flag goes low when the output voltage drops 10% below nominal value (for LP3961).

SENSE: Sense pin improves regulation at remote loads. (For LP3964)

Precision Output Voltage: Multiple output voltage options are available ranging from 1.2V to 5.0V and adjustable (LP3964), with a guaranteed accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

Features

  • Ultra low dropout voltage
  • Low ground pin current
  • Load regulation of 0.02%
  • 15µA quiescent current in shutdown mode
  • Guaranteed output current of 0.8A DC
  • Available in SOT-223,TO-263 and TO-220 packages
  • Output voltage accuracy ± 1.5%
  • Error# flag indicates output status (LP3961)
  • Sense option improves better load regulation (LP3964)
  • Extremely low output capacitor requirements
  • Overtemperature/overcurrent protection
  • -40°C to +125°C junction temperature range

Applications

  • Microprocessor power supplies
  • 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

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LP3961EMP-1.8CS06508800006000006169643205
LP3961EMP-2.5CS06508800006000006169643205
LP3961EMP-3.3CS06508800006000006169643205
LP3961EMP-5.0CS06508800006000006169643205
LP3961EMPX-1.8CS06508800006000006169643205
LP3961EMPX-2.5CS06508800006000006169643205
LP3961EMPX-3.3CS06508800006000006169643205
LP3961EMPX-5.0CS06508800006000006169643205
LP3961ES-1.8CS06508800006000006169643205
LP3961ES-2.5CS06508800006000006169643205
LP3961ES-3.3CS06508800006000006169643205
LP3961ES-5.0CS06508800006000006169643205
LP3961ESX-1.8CS06508800006000006169643205
LP3961ESX-2.5CS06508800006000006169643205
LP3961ESX-3.3CS06508800006000006169643205
LP3961ESX-5.0CS06508800006000006169643205
LP3961ET-1.8CS06508800006000006169643205
LP3961ET-2.5CS06508800006000006169643205
LP3961ET-3.3CS06508800006000006169643205
LP3961ET-5.0CS06508800006000006169643205

For more information on Reliablitity Metrics, please click here.


Application Notes

TitleSize in KbytesDate
View Online
Download
Receive via Email
AN-1148: Application Note 1148 Linear Regulators: Theory of Operation and Compensation 200 Kbytes 25-Sep-02 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 15-Jan-2004]

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