TL431LI datasheet(8/35 Pages) TI2

Part #	TL431LI

Description	TL431LI / TL432LI Programmable Shunt Regulator with Optimized Reference Current

PDF	35 Pages

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Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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8 / 35 page

150 Ω

IKA

R1 = 10 kΩ

VBATT

IKA

VBATT

150 Ω

TEST CIRCUIT FOR CURVE A

TEST CIRCUIT FOR CURVES B, C, AND D

−

CL - Load Capacitance - µF

0.001

0.01

0.1

Stable Region

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TL43

A VKA = Vref

B VKA = 5 V

C VKA = 10 V

TL431LI

TL432LI

SLVSDQ6A – JULY 2018 – REVISED NOVEMBER 2018

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Product Folder Links: TL431LI TL432LI

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Typical Characteristics (continued)

The areas under the curves represent conditions that may cause the

device to oscillate. For curves B and C, 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 12. Stability Boundary Conditions for All TL431LI,

TL432LI Devices

Figure 13. Test Circuits for Stability Boundary Conditions

TL431LI Datasheet(PDF) 8 Page - Texas Instruments