LP2951WG/883 datasheet, PDF - EEWORLD Datasheet

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LP2951WG/883: DescriptionFixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, CDSO10, CERAMIC, SOIC-10; CategoryPower/power management The power supply circuit; File Size723KB，26 Pages; ManufacturerRochester Electronics; Websitehttps://www.rocelec.com/

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LP2951WG/883 Overview

Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, CDSO10, CERAMIC, SOIC-10

LP2951WG/883 Parametric

Parameter Name	Attribute value
Maker	Rochester Electronics
package instruction	SOP,
Reach Compliance Code	unknown
ECCN code	EAR99
Maximum drop-back voltage 1	0.6 V
JESD-30 code	R-GDSO-G10
Number of functions	1
Number of terminals	10
Working temperatureTJ-Max	150 °C
Working temperature TJ-Min	-55 °C
Maximum output current 1	0.1 A
Maximum output voltage 1	29 V
Minimum output voltage 1	1.24 V
Nominal output voltage 1	5 V
Package body material	CERAMIC, GLASS-SEALED
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Regulator type	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
Filter level	MIL-STD-883
Maximum seat height	2.33 mm
surface mount	YES
technology	BIPOLAR
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
width	6.12 mm

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LP2950/LP2951 Series of Adjustable Micropower Voltage Regulators

June 17, 2009

LP2950/LP2951

Series of Adjustable Micropower Voltage Regulators

General Description

The LP2950 and LP2951 are micropower voltage regulators

with very low quiescent current (75μA typ.) and very low

dropout voltage (typ. 40mV at light loads and 380mV at

100mA). They are ideally suited for use in battery-powered

systems. Furthermore, the quiescent current of the LP2950/

LP2951 increases only slightly in dropout, prolonging battery

life.

The LP2950-5.0 is available in the surface-mount D-Pak

package, and in the popular 3-pin TO-92 package for pin-

compatibility with older 5V regulators. The 8-lead LP2951 is

available in plastic, ceramic dual-in-line, LLP, or metal can

packages and offers additional system functions.

One such feature is an error flag output which warns of a low

output voltage, often due to falling batteries on the input. It

may be used for a power-on reset. A second feature is the

logic-compatible shutdown input which enables the regulator

to be switched on and off. Also, the part may be pin-strapped

for a 5V, 3V, or 3.3V output (depending on the version), or

programmed from 1.24V to 29V with an external pair of re-

sistors.

Careful design of the LP2950/LP2951 has minimized all con-

tributions to the error budget. This includes a tight initial

tolerance (.5% typ.), extremely good load and line regulation

(.05% typ.) and a very low output voltage temperature coef-

ficient, making the part useful as a low-power voltage refer-

ence.

Features

■

5V, 3V, and 3.3V versions available

High accuracy output voltage

Guaranteed 100mA output current

Extremely low quiescent current

Low dropout voltage

Extremely tight load and line regulation

Very low temperature coefficient

Use as Regulator or Reference

Needs minimum capacitance for stability

Current and Thermal Limiting

Stable with low-ESR output capacitors (10mΩ to 6Ω)

LP2951 versions only

■

Error flag warns of output dropout

■

Logic-controlled electronic shutdown

■

Output programmable from 1.24 to 29V

Block Diagram and Typical Applications

LP2950

LP2951

854625

854601

8546

www.national.com

LP2951WG/883 Related Products

	LP2951WG/883	LP2951E/883	LP2951CMDC
Description	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, CDSO10, CERAMIC, SOIC-10	Fixed/Adjustable Positive LDO Regulator, 4.94V Min, 5.06V Max, 0.6V Dropout, BIPolar, CQCC20, LCC-20	Fixed/Adjustable Positive LDO Regulator, 1.24V Min, 29V Max, 0.6V Dropout, BIPolar, DIE
Maker	Rochester Electronics	Rochester Electronics	Rochester Electronics
package instruction	SOP,	HQCCN,	DIE,
Reach Compliance Code	unknown	unknown	unknown
ECCN code	EAR99	EAR99	EAR99
Maximum drop-back voltage 1	0.6 V	0.6 V	0.6 V
JESD-30 code	R-GDSO-G10	S-CQCC-N20	X-XUUC-N
Number of functions	1	1	1
Working temperatureTJ-Max	150 °C	150 °C	150 °C
Working temperature TJ-Min	-55 °C	-55 °C	-55 °C
Maximum output current 1	0.1 A	0.1 A	0.1 A
Maximum output voltage 1	29 V	5.06 V	29 V
Minimum output voltage 1	1.24 V	4.94 V	1.24 V
Nominal output voltage 1	5 V	5 V	5 V
Package body material	CERAMIC, GLASS-SEALED	CERAMIC, METAL-SEALED COFIRED	UNSPECIFIED
encapsulated code	SOP	HQCCN	DIE
Package shape	RECTANGULAR	SQUARE	UNSPECIFIED
Package form	SMALL OUTLINE	CHIP CARRIER, HEAT SINK/SLUG	UNCASED CHIP
Regulator type	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR	FIXED/ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	YES	YES	YES
technology	BIPOLAR	BIPOLAR	BIPOLAR
Terminal form	GULL WING	NO LEAD	NO LEAD
Terminal location	DUAL	QUAD	UPPER
Number of terminals	10	20	-
Filter level	MIL-STD-883	MIL-STD-883	-
Maximum seat height	2.33 mm	1.905 mm	-
Terminal pitch	1.27 mm	1.27 mm	-
width	6.12 mm	8.89 mm	-

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