Philips Semiconductors

Product specification

TL431C, TL431AC, TL431I,

TL431AI, LM431AC

Adjustable precision shunt regulators

1997 Feb 25

3

ABSOLUTE MAXIMUM RATINGS

SYMBOL

PARAMETER

RATING

UNITS

Cathode voltage (see Note 1)

37

V

Continuous cathode current range

–100 to +150

mA

Reference input current range

0.05 to 10

mA

Operating free-air temperature range

C suffix

0 to +70

°C

I suffix

–40 to +85

°C

Temperature storage range

–65 to 150

°C

Lead temperature 1.6mm (1/16 in.) from case for 10 sec: D or P pkgs

260

°C

Lead temperature 1.6mm (1/16 in.) from case for 60 sec: LP pkg

300

°C

NOTE:

1. Voltage values are with respect to the anode terminal unless otherwise noted.

RECOMMENDED OPERATING CONDITIONS

SYMBOL

PARAMETER

MIN

MAX

UNITS

Cathode voltage

36

V

Cathode current

1

100

mA

Table 1. Dissipation Rating Table – Free-Air Temperature

Package

= 25

°C

Power Rating

Power Rating

Power Rating

D

5.8mW/

°C

725mW

464mW

429mW

LP

6.2mW/

°C

775mW

496mW

403mW

P

8.0mW/

°C

1000mW

640mW

520mW

CATHODE

REF

ANODE

Q5

QD6

R5

3.28K

R11

2.4K

Q11

Q10

R9

800

R8

1000

Q9

C2

20p

R10

7.2K

R7

320

Q8

QD2

R1

10K

R2

150

Q2

Q1

Qq1

C1

20p

R3

800

R4

800

Q4

Q7

SL01188

Q3

Figure 2.

Equivalent Schematic