TL431_FAM

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 4 — 30 June 2011

4 of 27

NXP Semiconductors

TL431 family

Adjustable precision shunt regulator

6.

Marking

[1]

* = placeholder for manufacturing site code.

7.

Functional diagram

The TL431 family comprises a range of 3-terminal adjustable shunt regulators, with

specified thermal stability over applicable automotive and commercial temperature

and 36 V with two external resistors (see Figure 8). These devices have a typical output

impedance of 0.2

. Active output circuitry provides a very sharp turn-on characteristic,

making these devices excellent replacements for Zener diodes in many applications like

on-board regulation, adjustable power supplies and switching power supplies.

Table 4.

Marking codes

Type number

Marking code[1]

Type number

Marking code[1]

TL431CDBZR

CA*

TL431ASDT

RL*

TL431IDBZR

CB*

TL431AMSDT

LQ*

TL431QDBZR

CC*

TL431BCDBZR

CG*

TL431FDT

AR*

TL431BIDBZR

CH*

TL431MFDT

AU*

TL431BQDBZR

CJ*

TL431SDT

RM*

TL431BFDT

AT*

TL431MSDT

LR*

TL431BMFDT

AW*

TL431ACDBZR

CD*

TL431BSDT

MA*

TL431AIDBZR

CE*

TL431BMSDT

MB*

TL431AQDBZR

CF*

-

-

TL431AFDT

AS*

-

-

TL431AMFDT

AV*

-

-

Fig 1.

Functional diagram

ANODE

CATHODE

REF

006aab569