LT1762EMS8PBF Linear Technology Corporation, LT1762EMS8PBF Datasheet

LT1762EMS8PBF

Manufacturer Part Number

LT1762EMS8PBF

Description

MSOP8

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1762EMS8PBF.pdf (16 pages)

2.LT1762EMS833.pdf (16 pages)

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FEATURES

■

TYPICAL APPLICATIO

APPLICATIO S

3.7V TO

Cellular Phones

Battery-Powered Systems

Frequency Synthesizers

Noise-Sensitive Instrumentation Systems

Low Noise: 20µV

Low Quiescent Current: 25µA

Wide Input Voltage Range: 1.8V to 20V

Output Current: 150mA

Very Low Shutdown Current: < 1

Low Dropout Voltage: 270mV

No Protection Diodes Needed

Fixed Output Voltages: 2.5V, 3V, 3.3V, 5V

Adjustable Output from 1.22V to 20V

Stable with 2.2µF Output Capacitor

Stable with Aluminum, Tantalum or

Ceramic Capacitors

Reverse Battery Protection

No Reverse Current

Overcurrent and Overtemperature Protected

8-Lead MSOP Package

20V

1µF

3.3V Low Noise Regulator

RMS

SHDN

LT1762-3.3

(10Hz to 100kHz)

GND

SENSE

OUT

BYP

0.01µF

10µF

3.3V AT 150mA

20µV

RMS

1762 TA01

NOISE

DESCRIPTIO

The LT

dropout regulators. The devices are capable of supplying

150mA of output current with a dropout voltage of 270mV.

Designed for use in battery-powered systems, the low

25µA quiescent current makes them an ideal choice.

Quiescent current is well controlled; it does not rise in

dropout as it does with many other regulators.

A key feature of the LT1762 regulators is low output noise.

With the addition of an external 0.01µF bypass capacitor,

output noise drops to 20µV

bandwidth. The LT1762 regulators are stable with output

capacitors as low as 2.2µF. Small ceramic capacitors can

be used without the series resistance required by other

regulators.

Internal protection circuitry includes reverse battery pro-

tection, current limiting, thermal limiting and reverse

current protection. The parts come in fixed output volt-

ages of 2.5V, 3V, 3.3V and 5V, and as an adjustable device

with a 1.22V reference voltage. The LT1762 regulators are

available in the 8-lead MSOP package.

All other trademarks are the property of their respective owners.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

150mA, Low Noise, LDO

Micropower Regulators

1762 series are micropower, low noise, low

400

350

300

250

200

150

100

Dropout Voltage

OUTPUT CURRENT (mA)

80 100 120 140

RMS

over a 10Hz to 100kHz

LT1762 Series

1762 TA02

160

1762fa

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