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Products > Analog - Regulators > Linear Regulators - Low Dropout Voltage > Positive Voltage - Adjustable > LP2952

LP2952 Product Folder

Adjustable Micropower Low-Dropout Voltage Regulator

See Also:		LP2953 - micropower voltage regulator with low quiescent current.
		LP2956 - improved quiescent current, has multiple output capability

Generic P/N 2952

General
Description

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)	-20
InputMax Voltage (Volt)	30
Output Current (mA)	250

Dropout Voltage (Volt)	.47
Quiescent Current (mA)	.13
SecondaryOutput Voltage (Volt)	-
SecondaryOutput Current (Amp)	-
RegType	LDO
Output Min (Volt)	1.23
Output Max (Volt)	29
Watchdog	No

Datasheet

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
LP2952 LP2952A LP2953 LP2953A Adjustable Micropower Low-Dropout Voltage Regulators	559 Kbytes	1-Jun-99	View Online	Download	Receive via Email
LP2952 LP2952A LP2953 LP2953A Adjustable Micropower Low-Dropout Voltage Regulators (JAPANESE)	667 Kbytes

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Package Availability, Models, Samples & Pricing

Part Number

Package

Status

Models

Samples &
Electronic
Orders

Budgetary Pricing

Std
Pack
Size

Package
Marking

Type

Pins

MSL/Lead-Free Availability

Lead
Time

Qty

SPICE

IBIS

Qty

$US each

LP2952AIM

16

Full production

N/A

N/A

1K+

$1.79

rail
of
48

NSUZXYTT
LP2952AIM

7-9 weeks

20000

LP2952AIM-3.3

16

Full production

N/A

N/A

1K+

$1.79

rail
of
48

NSUZXYTT
LP2952AIM
-3.3

8-10 weeks

20000

LP2952IM

16

Full production

N/A

N/A

1K+

$1.05

rail
of
48

NSUZXYTT
LP2952IM

7-9 weeks

20000

LP2952IM-3.3

16

Full production

N/A

N/A

1K+

$1.05

rail
of
48

NSUZXYTT
LP2952IM
-3.3

8-10 weeks

20000

LP2952AIMX

16

Full production

N/A

N/A

1K+

$1.79

reel
of
2500

NSUZXYTT
LP2952AIM

7-9 weeks

20000

LP2952AIMX-3.3

16

Full production

N/A

N/A

1K+

$1.79

reel
of
2500

NSUZXYTT
LP2952AIM
-3.3

8-10 weeks

20000

LP2952IMX

16

Full production

N/A

N/A

1K+

$1.05

reel
of
2500

NSUZXYTT
LP2952IM

7-9 weeks

20000

LP2952IMX-3.3

16

Full production

N/A

N/A

1K+

$1.05

reel
of
2500

NSUZXYTT
LP2952IM
-3.3

9-11 weeks

20000

LP2952AIN

14

Full production

N/A

N/A

1K+

$1.79

rail
of
25

NSUZXYYTT
LP2952AIN

7-9 weeks

20000

LP2952AIN-3.3

14

Full production

N/A

N/A

1K+

$1.79

rail
of
25

NSUZXYYTT
LP2952AIN-3.3

8-10 weeks

20000

LP2952IN

14

Full production

N/A

N/A

1K+

$1.05

rail
of
25

NSUZXYYTT
LP2952IN

7-9 weeks

20000

LP2952IN-3.3

14

Full production

N/A

N/A

1K+

$1.05

rail
of
25

NSUZXYYTT
LP2952IN-3.3

8-10 weeks

20000

LP2952AI MDC

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LP2952I MDC

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LP2952I-3.3 MDC

Full production

N/A

N/A

tray
of
N/A

-

N/A

0

LP2952AI MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LP2952I MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

LP2952I-3.3 MWC

Full production

N/A

N/A

wafer jar
of
N/A

-

N/A

0

General Description

The LP2952 and LP2953 are micropower voltage regulators with very low quiescent current (130 µA typical at 1 mA load) and very low dropout voltage (typ. 60 mV at light load and 470 mV at 250 mA load current). They are ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.

The LP2952 and LP2953 retain all the desirable characteristics of the LP2951, but offer increased output current, additional features, and an improved shutdown function.

The internal crowbar pulls the output down quickly when the shutdown is activated.

The error flag goes low if the output voltage drops out of regulation.

Reverse battery protection is provided.

The internal voltage reference is made available for external use, providing a low-T.C. reference with very good line and load regulation.

The parts are available in DIP and surface mount packages.

Features

Output voltage adjusts from 1.23V to 29V
Guaranteed 250 mA output current
Extremely low quiescent current
Low dropout voltage
Extremely tight line and load regulation
Very low temperature coefficient
Current and thermal limiting
Reverse battery protection
50 mA (typical) output pulldown crowbar
5V and 3.3V versions available

Applications

Auxiliary comparator included with CMOS/TTL compatible output levels. Can be used for fault detection, low input line detection, etc.

High-efficiency linear regulator
Regulator with under-voltage shutdown
Low dropout battery-powered regulator
Snap-ON/Snap-OFF regulator

Reliability Metrics

Part Number	Process	Early Failure Rate - Rejects	Sample Size (EFR)	PPM *	Rel. Rejects	Device Hours	Long Term Failure Rates (FITS)	MTTF
LP2952AI MDC	SLM	0	35000	0	0	1500000	3	424108012
LP2952AI MWC	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIM	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIM-3.3	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIMX	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIMX-3.3	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIN	SLM	0	35000	0	0	1500000	3	424108012
LP2952AIN-3.3	SLM	0	35000	0	0	1500000	3	424108012
LP2952I MDC	SLM	0	35000	0	0	1500000	3	424108012
LP2952I MWC	SLM	0	35000	0	0	1500000	3	424108012
LP2952IM	SLM	0	35000	0	0	1500000	3	424108012
LP2952IM-3.3	SLM	0	35000	0	0	1500000	3	424108012
LP2952IMX	SLM	0	35000	0	0	1500000	3	424108012
LP2952IMX-3.3	SLM	0	35000	0	0	1500000	3	424108012
LP2952IN	SLM	0	35000	0	0	1500000	3	424108012
LP2952IN-3.3	SLM	0	35000	0	0	1500000	3	424108012

For more information on Reliablitity Metrics, please click here.

Application Notes

Title	Size in Kbytes	Date	View Online	Download	Receive via Email
AN-1061: Application Note 1061 Power Conversion in Line-Powered Equipment	188 Kbytes	1-Oct-02	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

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[Information as of 15-Jan-2004]