ADM666 Просмотр технического описания (PDF) - Analog Devices

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ADM666

+5 V Fixed, Adjustable Micropower Linear Voltage Regulators

Analog Devices 

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+5 V Fixed, Adjustable

Micropower Linear Voltage Regulators

FEATURES

5 V Fixed or +1.3 V to +16 V Adjustable

Low Power CMOS: 12 µA max Quiescent Current

40 mA Output Current

Current Limiting

Pin Compatible with MAX663/666

+2 V to +16.5 V Operating Range

Low Battery Detector ADM666

No Overshoot on Power-Up

APPLICATIONS

Handheld Instruments

LCD Display Systems

Pagers

Remote Data Acquisition

ADM663/ADM666

FUNCTIONAL BLOCK DIAGRAMS

VIN

A1

SHDN

ADM663

0.5V

VOUT2

VOUT1

C1

SENSE

50mV

C2

VSET

GENERAL DESCRIPTION

The ADM663/ADM666 are precision voltage regulators featur-

ing a maximum quiescent current of 12 µA. They can be used to

give a fixed +5 V output with no additional external compo-

nents or can be adjusted from 1.3 V to 16 V using two external

resistors. Fixed or adjustable operation is automatically selected

via the VSET input. The low quiescent current makes these de-

vices especially suitable for battery powered systems. The input

voltage range is 2 V to 16.5 V and an output current up to

40 mA is provided. The ADM663 can directly drive an external

pass transistor for currents in excess of 40 mA. Additional fea-

tures include current limiting and low power shutdown. Ther-

mal shutdown circuitry is also included for additional safety.

The ADM666 features additional low battery monitoring

circuitry to detect for low battery voltages.

The ADM663/ADM666 are pin-compatible replacements for

the MAX663/666. Both are available in 8-pin DIP and in nar-

row surface mount (SOIC) packages.

Model

ADM663AN

ADM663AR

ADM666AN

ADM666AR

ORDERING GUIDE

Temperature Range

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

Package Option

N-8

R-8

N-8

R-8

GND

VIN

SHDN

GND

1.3V 0.9V A2

VTC

REF

ADM666

C1

VOUT

0.5V

SENSE

A1

50mV

C2

VSET

LBI

LBO

C3

1.3V

REF

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

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