Philips Semiconductors
Product specification
Adjustable precision shunt regulators
TL431C, TL431AC, TL431I,
TL431AI, LM431AC
DESCRIPTION
The TL431 and TL431A are 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 2.5V) and 36V with two
external resistors (see Figure 4). These devices have a typical
output impedance of 0.2Ω. 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.
The TL431C and TL431AC are characterized for operation from
0°C to +70°C; the TL431I and TL431AI are characterized for
operation from –40°C to +85°C.
PIN CONFIGURATIONS
M, D Package
TOP VIEW
CATHODE
ANODE
ANODE
NC
1
2
3
4
SOT96-1
8
7
6
5
REF
ANODE
ANODE
NC
N, P Package
TOP VIEW
CATHODE
1
2
3
4
SOT97-1
8
7
6
5
REF
NC
ANODE
NC
FEATURES
NC
NC
NC
•
Equivalent full-range temperature coefficient: 30ppm/°C
•
0.2Ω typical output impedance
•
Sink current capability: 1mA to 100mA
•
Low output noise
•
Adjustable output voltage: V
REF
to 36V
Z, LP, U Package
CATHODE
ANODE
SOT54
REF
SL01167
Figure 1. Pin Configuration
ORDERING INFORMATION
DESCRIPTION
3-Pin Plastic TO92
2
3-Pin Plastic TO92
2
3-Pin Plastic TO92
3-Pin Plastic TO92
2
TEMPERATURE
RANGE
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
INDUSTRY STANDARD
PART NUMBER
TL431CLP
TL431ACLP
TL431ILP
TL431AILP
LM431ACZ
TL431CD
TL431ID
TL431ACD
TL431AID
LM431ACM
TL431CP
TL431IP
TL431ACP
TL431AIP
ORDER CODE
TL431CLPU
TL431ACLPU
TL431ILPU
TL431AILPU
LM431ACZU
TL431CD
TL431ID
TL431ACD
TL431AID
LM431ACMD
TL431CPN
TL431IPN
TL431ACPN
TL431AIPN
DWG #
SOT54
SOT54
SOT54
SOT54
SOT54
SOT96-1
SOT96-1
SOT96-1
SOT96-1
SOT96-1
SOT97-1
SOT97-1
SOT97-1
SOT97-1
3-Pin Plastic TO92
2
2
8-Pin Plastic Small Outline (SO) package
8-Pin Plastic Small Outline (SO) package
8-Pin Plastic Small Outline (SO) package
8-Pin Plastic Small Outline (SO) package
8-Pin Plastic Small Outline (SO) package
8-Pin Plastic Dual In-Line package (DIP)
8-Pin Plastic Dual In-Line package (DIP)
8-Pin Plastic Dual In-Line package (DIP)
8-Pin Plastic Dual In-Line package (DIP)
NOTE:
1. SYMBOL INFORMATION: Parts will be marked with product name including temperature and electrical grade desginators, but not the
package identifier.
2. TO92 is normally shipped in bulk, i.e., in plastic bags (containing 1,000 parts), 5 bags per box. Tape and reel (or ammo box) is an option.
See page 15 for information.
1997 Feb 25
2
853–1927 17795
PHILIPS [ NXP SEMICONDUCTORS ]
