TL431 Datasheet, PDF (3/23 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES

NXP Semiconductors
TL431 family
Adjustable precision shunt regulator
6. Marking
Table 4. Marking codes
Type number
Marking code^[1]
TL431CDBZR
CA*
TL431IDBZR
CB*
TL431QDBZR
CC*
TL431SDT
RM*
TL431MSDT
LR*
TL431ACDBZR
CD*
TL431AIDBZR
CE*
TL431AQDBZR
CF*
[1] * = -: made in Hong Kong
* = p: made in Hong Kong
* = t: made in Malaysia
* = W: made in China
Type number
TL431ASDT
TL431AMSDT
TL431BCDBZR
TL431BIDBZR
TL431BQDBZR
TL431BSDT
TL431BMSDT
-
Marking code^[1]
RL*
LQ*
CG*
CH*
CJ*
MA*
MB*
-
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
ranges. The output voltage may be set to any value between V_ref (approximately 2.5 V)
and 36 V with two external resistors (see Figure 8). These devices have a typical output
impedance of 0.2 Ω. 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.
CATHODE
REF
V_ref
Fig 1. Functional diagram
ANODE
006aab569
TL431_FAM_2
Product data sheet
Rev. 02 — 20 January 2010
© NXP B.V. 2010. All rights reserved.
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