LP2950-2.85 Просмотр технического описания (PDF) - First Components International

Номер в каталоге

Компоненты Описание

производитель

LP2950-2.85

100mA Low Drop Out Voltage Regulators

First Components International 

LP2950/LP2951 100mA Low Drop Out Voltage Regulators

FEATURES

• High accuracy output voltage

• Guaranteed 100mA output

• Very low quiescent current

• Low dropout voltage

• Extremely tight load and line regulation

• Very low temperature coefficient

• Needs only 1µF for stability

• Error Flag warns of output dropout

• Logic-Controlled electronic shutdown

• Output programmable from 1.24 to 29V

APPLICATIONS

• Battery powered systems

• Cordless telephones

• Radio control systems

• Portable/Palm top/Notebook computers

• Portable consumer equipment

• Portable Instrumentation

• Avionics

• Automotive Electronics

• SMPS Post-Regulator

• Voltage Reference

PRODUCT DESCRIPTION

The LP2950-XX/LP2951-XX is a low power voltage regulator. This device excellent choice for use in battery powered application such as c

ordless telephone, radio control systems, and portable computers.

The LP2950-XX/LP2951-XX features very low quiescent current (75µA Typ.) and very low drop output voltage (Typ.

40mV at light load and 380mV at 100mA). This includes a tight initial tolerance of 0.5% typ., extremely good load

and line regulation of 0.05% typ., and very low output temperature coefficient, making the LP2950-XX/LP2951-XX

useful as a low-power voltage reference.

The error flag output feature is used as power-on reset for warn of a low output voltage, due to following batteries on input. Other feature i

s the logic-compatible shutdown input which enable the regulator to be switched on and off.

The LP2951-XX is available in 8-pin plastic packages. The regulator output voltage may be pin-strapped for a -XX volt or programmed from

1.24 volt to 29 volts with external pair of resistors.

The LP2950-XX is offered in 3-pin TO-92 package compatible with other fixed regulator.

Absolute Maximum Ratings

Power Dissipation

Lead Temperature

(Soldering, 5 seconds)

Storage Temperature Range

Operating Junction Temperature Range

Input Supply Voltage

Feedback Input Voltage

Shutdown Input Voltage

Error Comparator Output

Internally Limited

260°C

-65°C to+150°C

-55°C to +150°C

-0.3 to +30V

-1.5 to +30V

-0.3 to +30V

-0.3 to +30V

Device Selection Guide

Vout, V

olts

Device

2.85*

3.0

3.3

5.0

LP2950-2.85, LP2951-2.85

LP2950-3.0, LP2951-3.0

LP2950-3.3, LP2951-3.3

LP2950-5.0, LP2951-5.0

* - other versions are also available

Vout = 2.0V to 5.0V. Please consult factory for

more information

Pin Connection

LP2951-XX

Top View

TO-92 Plastic Package

(LP2950-XX only)

Bottom View

Figure 1. Adjustable Regulator

Share Link: