LM431 datasheet(7/16 Pages) PHILIPS

Part #	LM431

Description	Adjustable precision shunt regulators

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

TL431C, TL431AC, TL431I,

TL431AI, LM431AC

Adjustable precision shunt regulators

1997 Feb 25

7

4

3

2

1

0

–1

–2

–3

–4

0

123

456

789

10

t – TIME – (SECONDS)

SL01174

VEE

160k

Ω

0.1

µF

820

Ω

910

Ω

16k

Ω

VCC

TLE2027

AV = 10V/mV

500

µF

1k

Ω

19.1V

2000

µF

TL431

(DUT)

16k

Ω

1

µF

33k

Ω

1

µF

VEE

VCC

TLE2027

AV = 2V/V

33k

Ω

22

µF

CRO

1M

Ω

16

Ω

Equivalent Input Noise Voltage Over a 10-Second Period

Test Circuit

Figure 12.

400

350

300

250

200

150

100

10

100

1K

10K

100K

IK = 10mA

Tamb = 25°C

f–FREQUENCY–Hz

SL01180

Figure 13.

Equivalent Input Noise Voltage vs. Frequency

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