LM4431M3-2.5/NOPB National Semiconductor, LM4431M3-2.5/NOPB Datasheet

LM4431M3-2.5/NOPB

Manufacturer Part Number

LM4431M3-2.5/NOPB

Description

IC VREF PREC MICROPWR SOT23-3

Manufacturer

National Semiconductor

Datasheet

1.LM4431M3-2.5NOPB.pdf (8 pages)

Specifications of LM4431M3-2.5/NOPB

Reference Type

Shunt

Voltage - Output

2.5V

Tolerance

±2%

Temperature Coefficient

30ppm/°C

Number Of Channels

Current - Cathode

45µA

Current - Output

15mA

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

SOT-23-3, TO-236-3, Micro3™, SSD3, SST3

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Voltage - Input

Current - Quiescent

Other names

LM4431M3-2.5
LM4431M3-2.5TR

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM4431M3-2.5/NOPB

Manufacturer:

NS/国半

Quantity:

20 000

Current page: 1 of 8
Download datasheet (131Kb)

LM4431

Micropower Shunt Voltage Reference

General Description

Ideal for space critical applications, the LM4431 voltage ref-

erence is available in the sub-miniature (3 mm x 1.3 mm)

SOT-23 surface-mount package. The LM4431’s advanced

design eliminates the need for an external stabilizing capaci-

tor while ensuring stability with any capacitive load, thus

making the LM4431 easy to use. The operating current

range is 100 µA to 15 mA.

The LM4431 utilizes fuse and zener-zap reverse breakdown

voltage trim during wafer sort to ensure that the parts have

an accuracy of better than

ence temperature drift curvature correction and low dynamic

impedance ensure stable reverse breakdown voltage accu-

racy over a wide range of operating temperatures and cur-

rents.

Features

n Small package: SOT-23

n No output capacitor required

Connection Diagram

* This pin must be left floating or connected to pin 2.

SOT-23 Package Marking Information

Only three fields of marking are possible on the SOT-23’s small surface. The following table gives the meaning of the three

fields.

Part Marking

S2E

2.0% at 25˚C. Bandgap refer-

DS011374

First Field:

Second Field:

Third Field:

S = Reference

2 = 2.500V Voltage Option

E = Initial Reverse Breakdown Voltage Tolerance of

(JEDEC Registration TO-236AB)

See NS Package Number M03B

Order Number LM4431M3-2.5

SOT-23

Top View

DS011374-1

n Tolerates capacitive loads

n Fixed reverse breakdown voltage of 2.50V

Key Specifications

n Output voltage tolerance 25˚C:

n Low output noise (10 Hz to 10 kHz): 35 µV

n Wide operating current range: 100 µA to 15 mA

n Commercial temperature range: 0˚C to +70˚C

n Low temperature coefficient: 30 ppm/˚C (typ)

Applications

n Portable, Battery-Powered Equipment

n Data Acquisition Systems

n Instrumentation

n Process Control

n Energy Management

n Product Testing

n Power Supplies

Field Definition

2.0%

2.0% (max)

www.national.com

rms

(typ)

July 1998

Related parts for LM4431M3-2.5/NOPB

LM4431M3-2.5/NOPB Summary of contents

Page 1

... Applications n Portable, Battery-Powered Equipment n Data Acquisition Systems n Instrumentation n Process Control n Energy Management n Product Testing n Power Supplies SOT-23 DS011374-1 Top View Order Number LM4431M3-2.5 See NS Package Number M03B (JEDEC Registration TO-236AB) Field Definition July 1998 ± 2.0% (max) (typ) rms ± 2.0% ...

Page 2

... Jmax = 125˚C, and the typical thermal resistance ( Jmax resistor into each pin. The machine model is a 200 pF capacitor discharged di 200V (Notes 0˚C T +70˚C A 100 µ LM4431M3 Units Limits (Limit) (Note 5) V ± (max) µA 100 µA (max) 30 ppm/˚C 30 ppm/˚ ...

Page 3

Typical Performance Characteristics Temperature Drift for Different Average Temperature Coefficient Reverse Characteristics and Minimum Operating Current Start-Up Characteristics Output Impedance vs Frequency DS011374-2 Noise Voltage DS011374-4 LM4431-2.5 DS011374-6 3 DS011374-3 DS011374-5 = 30k R S DS011374-7 www.national.com ...

Page 4

Functional Block Diagram Applications Information The LM4431 is a micro-power curvature-corrected 2.5V bandgap shunt voltage reference. For space critical applica- tions, the LM4431 is available in the sub-miniature SOT-23 surface-mount package. The LM4431 has been designed for stable operation without ...

Page 5

Typical Applications (Continued) FIGURE 2. Bounded amplifier reduces saturation-induced delays and can prevent succeeding stage damage. Nominal clamping voltage is FIGURE 3. Protecting Op Amp input. The bounding voltage is (LM4431’s reverse breakdown voltage + 3 diode V DS011374-10 ± ...

Page 6

Typical Applications (Continued) FIGURE 5. Precision 1 µ Current Sources www.national.com FIGURE 4. Programmable Current Source DS011374-13 6 DS011374-12 DS011374-14 ...

Page 7

7 ...

Page 8

... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 ...

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