TL431CD datasheet(26/75 Pages) TI

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−1

PULSE RESPONSE

Input

Output

TA = 25°C

220 Ω

50 Ω

GND

Output

Pulse

Generator

f = 100 kHz

TEST CIRCUIT FOR PULSE RESPONSE

t − Time − µs

150 Ω

IKA

R1 = 10 kΩ

VBATT

IKA

VBATT

150 Ω

TEST CIRCUIT FOR CURVE A

TEST CIRCUIT FOR CURVES B, C, AND D

0.001

0.01

0.1

STABILITY BOUNDARY CONDITIONS

FOR ALL TL431 AND TL431A DEVICES

(EXCEPT FOR SOT23-3, SC-70, AND Q-TEMP DEVICES)

100

TA = 25°C

Stable

A V KA = Vref

B VKA = 5 V

C VKA = 10 V

D VKA = 15 Vf

CL − Load Capacitance − µF

−

TL431, TL431A, TL431B

TL432, TL432A, TL432B

SLVS543K – AUGUST 2004 – REVISED JUNE 2010

www.ti.com

Figure 14.

A. The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C, and D, R2 and V+ are adjusted

to establish the initial VKA and IKA conditions, with CL = 0. VBATT and CL then are adjusted to determine the ranges of stability.

Figure 15.

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Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B

TL431CD Datasheet(PDF) 26 Page - Texas Instruments

TL431CD Datasheet(HTML) 26 Page - Texas Instruments

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