Datasheet > NCP431

NCP431

更新时间： 2024-09-21 00:49:31

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安森美 - ONSEMI		/
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17页	377K
描述
Programmable Precision References

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NCP431 数据手册

NCP431A, SC431A,

NCP431B, SC431B,

NCP432B, SC432B Series

Programmable Precision

References

www.onsemi.com

The NCP431/NCP432 integrated circuits are three−terminal

programmable shunt regulator diodes. These monolithic IC voltage

references operate as a low temperature coefficient zener which is

programmable from Vref to 36 V using two external resistors. These

devices exhibit a wide operating current range of 40 mA to 100 mA

with a typical dynamic impedance of 0.22 W. The characteristics of

these references make them excellent replacements for zener diodes in

many applications such as digital voltmeters, power supplies, and op

amp circuitry. The 2.5 V reference makes it convenient to obtain a

stable reference from 5.0 V logic supplies, and since the NCP431/

NCP432 operates as a shunt regulator, it can be used as either a

positive or negative voltage reference. Low minimum operating

current makes this device an ideal choice for secondary regulators in

SMPS adapters with extremely low no−load consumption.

TO−92

LP SUFFIX

CASE 29−11

Pin 1. Reference

2. Anode

3. Cathode

SOIC−8 NB

D SUFFIX

CASE 751

Features

Cathode

Anode

Reference

Anode

• Programmable Output Voltage to 36 V

• Low Minimum Operating Current: 40 mA, Typ @ 25°C

• Voltage Reference Tolerance: 0.5%, Typ @ 25°C

(NCP431B/NCP432B)

(Top View)

• Low Dynamic Output Impedance, 0.22 W Typical

• Sink Current Capability of 40 mA to 100 mA

SOT−23−3

SN SUFFIX

CASE 318

• Equivalent Full−Range Temperature Coefficient of 50 ppm/°C

Typical

• Temperature Compensated for Operation over Full Rated Operating

Temperature Range

NCP431/SC431

Pin 1. Reference

2. Cathode

NCP432/SC432

Pin 1. Cathode

2. Reference

3. Anode

• SC Prefix for Automotive and Other Applications Requiring Unique

Site and Control Change Requirements; AEC−Q100 Qualified and

PPAP Capable

3. Anode

• These are Pb−Free Devices

Typical Applications

• Voltage Adapters

• Switching Power Supply

• Precision Voltage Reference

• Charger

ORDERING AND MARKING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 14 of this data sheet.

• Instrumentation

Publication Order Number:

June, 2016 − Rev. 14

NCP431/D

12 3 4 5 6 7...17

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