LP2951-33DRJR

更新时间： 2024-11-26 12:58:19

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德州仪器 - TI		线性稳压器IC 调节器电源电路光电二极管输出元件 PC
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LP2951-33DRJR 数据手册

LP2950

LP2951

www.ti.com

SLVS582F –APRIL 2006–REVISED DECEMBER 2009

ADJUSTABLE MICROPOWER VOLTAGE REGULATORS

WITH SHUTDOWN

Check for Samples: LP2950, LP2951

FEATURES

•

Wide Input Range: Up to 30 V

Rated Output Current of 100 mA

Low Dropout: 380 mV (Typ) at 100 mA

Low Quiescent Current: 75 μA (Typ)

Tight Line Regulation: 0.03% (Typ)

Tight Load Regulation: 0.04% (Typ)

High V_OAccuracy

•

Stable With Low ESR (>12 mΩ) Capacitors

Current- and Thermal-Limiting Features

LP2950 Only (3-Pin Package)

–

Fixed-Output Voltages of 5 V, 3.3 V, and 3 V

•

LP2951 Only (8-Pin Package)

–

Fixed- or Adjustable-Output Voltages:

5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ

–

Low-Voltage Error Signal on Falling Output

Shutdown Capability

–

1.4% at 25°C

2% Over Temperature

Remote Sense Capability for Optimal

Output Regulation and Accuracy

•

Can Be Used as a Regulator or Reference

LP2950

LP PACKAGE

(BOTTOM VIEW)

LP2951

D OR P PACKAGE

(TOP VIEW)

LP2951

DRG PACKAGE

(TOP VIEW)

OUTPUT

SENSE

INPUT

OUTPUT

SENSE

FEEDBACK

V_TAP

Thermal

Pad

FEEDBACK

V_TAP

GND

SHUTDOWN

GND

SHUTDOWN

GND

ERROR

INPUT

ERROR

DESCRIPTION/ORDERING INFORMATION

The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input

supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V,

3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same

device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and V_TAPpins together, the

LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and

V_TAPpins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value

between 1.235 V to 30 V.

The 8-pin LP2951 also offers additional functionality that makes it particularly suitable for battery-powered

applications. For example, a logic-compatible shutdown feature allows the regulator to be put in standby mode

for power savings. In addition, there is a built-in supervisor reset function in which the ERROR output goes low

when V_OUTdrops by 6% of its nominal value for whatever reasons – due to a drop in V_IN, current limiting, or

thermal shutdown.

The LP2950 and LP2951 are designed to minimize all error contributions to the output voltage. With a tight

output tolerance (0.5% at 25°C), a very low output voltage temperature coefficient (20 ppm typical), extremely

good line and load regulation (0.3% and 0.4% typical), and remote sensing capability, the parts can be used as

either low-power voltage references or 100-mA regulators.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...28

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与LP2951-33DRJR相关器件

型号	品牌	获取价格	描述	数据表
LP2951-33P	TI	获取价格	ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
LP2951-33-Q1	TI	获取价格	ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
LP2951-33-Q1_15	TI	获取价格	Adjustable Micropower Voltage Regulators With Shutdown
LP2951-33QDRGRQ1	TI	获取价格	ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
LP2951-4.8BM	MICREL	获取价格	100mA Low-Dropout Voltage Regulator
LP2951-4.8BMT&R	MICROCHIP	获取价格	Fixed/Adjustable Positive LDO Regulator, 4.753V Min, 4.947V Max, 0.6V Dropout, BIPolar, PD
LP2951-5.0	FCI	获取价格	100mA Low Drop Out Voltage Regulators Portable consumer equipment
LP2951-50D	TI	获取价格	ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
LP2951-50DG4	TI	获取价格	ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN
LP2951-50DGKT	TI	获取价格	5V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PDSO8, PLASTIC, VSSOP-8

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