Philips Semiconductors
Product specification
Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
KA
PARAMETER
Cathode voltage (see Note 1)
Continuous cathode current range
Reference input current range
T
amb
T
STG
Operating free-air temperature range
C suffix
I suffix
Temperature storage range
Lead temperature 1.6mm (1/16 in.) from case for 10 sec: D or P pkgs
Lead temperature 1.6mm (1/16 in.) from case for 60 sec: LP pkg
NOTE:
1. Voltage values are with respect to the anode terminal unless otherwise noted.
RATING
37
–100 to +150
0.05 to 10
0 to +70
–40 to +85
–65 to 150
260
300
UNITS
V
mA
mA
°C
°C
°C
°C
°C
RECOMMENDED OPERATING CONDITIONS
SYMBOL
V
KA
I
K
Cathode voltage
Cathode current
PARAMETER
MIN
V
REF
1
MAX
36
100
UNITS
V
mA
Table 1. Dissipation Rating Table – Free-Air Temperature
Package
D
LP
P
Derating Factor Above T
amb
= 25°C
5.8mW/°C
6.2mW/°C
8.0mW/°C
T
amb
= 25°C
Power Rating
725mW
775mW
1000mW
T
amb
= 70°C
Power Rating
464mW
496mW
640mW
T
amb
= 85°C
Power Rating
429mW
403mW
520mW
CATHODE
R4
800
R3
800
C1
20p
REF
Q5
Q4
Q3
Q2
QD6
Q7
R5
3.28K
R2
150
Q1
R7
320
R1
10K
Qq1
R11
2.4K
R10
7.2K
C2
20p
Q9
Q10
R8
1000
Q11
R9
800
ANODE
Q8
QD2
SL01188
Figure 2. Equivalent Schematic
1997 Feb 25
3
PHILIPS [ NXP SEMICONDUCTORS ]
