Datasheet > LP2950-N_15

LP2950-N_15

更新时间： 2024-11-24 01:20:51

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德州仪器 - TI		/
页数	文件大小	规格书
51页	2006K
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LP295x-N Series of Adjustable Micropower Voltage Regulators

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LP2950-N, LP2951-N

SNVS764O –JANUARY 2000–REVISED DECEMBER 2014

LP295x-N Series of Adjustable Micropower Voltage Regulators

1 Features

3 Description

The LP2950-N and LP2951-N are micropower

•

Input Voltage Range: 2.3 V to 30 V

voltage regulators with very low quiescent current (75

μA typical) and very low dropout voltage (typical 40

mV at light loads and 380 mV at 100 mA). They are

ideally suited for use in battery-powered systems.

Furthermore, the quiescent current of the LP2950-

N/LP2951-N increases only slightly in dropout,

prolonging battery life.

5-V, 3-V, and 3.3-V Output Voltage Versions

Available

•

High Accuracy Output Voltage

Ensured 100-mA Output Current

Extremely Low Quiescent Current

Low Dropout Voltage

Careful design of the LP2950-N/LP2951-N has

minimized all contributions to the error budget. This

includes a tight initial tolerance (0.5% typ.), extremely

good load and line regulation (.05% typ.) and a very

low output voltage temperature coefficient, making

the part useful as a low-power voltage reference.

Extremely Tight Load and Line Regulation

Very Low Temperature Coefficient

Use as Regulator or Reference

Needs Minimum Capacitance for Stability

Current and Thermal Limiting

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 5-V, 3-V,

or 3.3-V output (depending on the version), or

programmed from 1.24 V to 29 V with an external

pair of resistors.

Stable With Low-ESR Output Capacitors (10 mΩ

to 6 Ω)

•

LP2951-N Versions Only:

–

Error Flag Warns of Output Dropout

Logic-Controlled Electronic Shutdown

Output Programmable From 1.24 V to 29 V

2 Applications

The LP2950-N is available in the surface-mount TO-

252 package and in the popular 3-pin TO-92 package

for pin-compatibility with older 5-V regulators. The 8-

lead LP2951-N is available in plastic, ceramic dual-in-

line, WSON, or metal can packages and offers

additional system functions.

•

High-Efficiency Linear Regulator

Regulator with Undervoltage Shutdown

Low dropout Battery-powered Regulator

Snap-ON/Snap-OFF Regulator

Device Information⁽¹⁾

PART NUMBER PACKAGE

BODY SIZE (NOM)

4.30 mm x 4.30 mm

9.91 mm x 6.58 mm

4.90 mm x 3.91 mm

3.00 mm x 3.00 mm

4.00 mm x 4.00 mm

9.81 mm x 6.35 mm

TO-92 (3)

LP2950-N

TO-252 (3)

SOIC (8)

VSSOP (8)

LP2951-N

WSON (8)

PDIP (8)

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

LP2951 Simplified Schematic

LP2950-N Simplified Schematic

LP2951

V_OUT

V_IN

LP2950

OUT

C_OUT

2.2 µF

C_IN

1 µF

V_OUT

V_IN

SENSE

FEEDBACK

OUT

C_OUT

2.2 µF

C_IN

1 µF

V_FEEDBACK

SHUTDOWN

GND

SHUTDOWN

GND

VTAP

330 kꢀ

V_OUT

ERROR

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...51

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与LP2950-N_15相关器件

型号	品牌	获取价格	描述	数据表
LP2950-SP6645	ETC	获取价格	Power Management 1 \| Short Form Catalog
LP2950-XX-D08-T	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-S08-R	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-S08-T	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-T92-B	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-T92-K	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-TN3-R	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2950-XX-TN3-T	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2951	UTC	获取价格	100 mA LOW-DROPOUT VOLTAGE REGULATOR
LP2951	ONSEMI	获取价格	100 mA, Low Power Low Dropout Voltage Regulator

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