TL432 Datasheet PDF - STMicroelectronics


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TL432
STMicroelectronics

Part Number TL432
Description PROGRAMMABLE VOLTAGE REFERENCE
Page 21 Pages

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TL431
TL432
Programmable voltage reference
Features
Adjustable output voltage: 2.5 to 36 V
Sink current capability: 1 to 100 mA
Typical output impedance: 0.22 Ω
1% and 2% voltage precision
Automotive temp. range - 40 °C to +125 °C
Applications
Power supply
Industrial
Automotive
Description
The TL431 and TL432 are programmable shunt
voltage references with guaranteed temperature
stability over the entire operating temperature
range. The device temperature range is extended
for the automotive version from -40 °C up to
+125 °C. The output voltage can be set to any
value between 2.5 and 36 V with two external
resistors. The TL431 and TL432 operate with a
wide current range from 1 to 100 mA with a typical
dynamic impedance of 0.22 Ω.
Datasheet production data
Z
TO-92
(Plastic package)
L
SOT23-3
L
SOT23-5
C
SOT323-6
D
SO-8
(Batwing plastic micropackage)
December 2012
This is information on a product in full production.
Doc ID 4467 Rev 11
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Contents
Contents
TL431, TL432
1 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Reference input voltage deviation over temperature range . . . . . . . . . . . . 7
4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 TO-92 ammopack and tape and reel package information . . . . . . . . . . . 13
4.3 TO-92 (bulk) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 SOT23-3 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 SOT23-5 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6 SOT323-6 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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TL431, TL432
1 Schematic diagrams
Figure 1. TO-92 pin connections (top view)
Schematic diagrams
Figure 2.
SO-8 batwing pin connections (top view)
Cathode 1
Anode 2
3
NC 4
SO8
8 Ref
7 Anode
6
5 NC
Figure 3. SOT23-5 and SOT23-3 pin connections (top view)
NC 1
NC 2
Cathode 3
SOT23-5
5 Anode
4 Ref
SOT23-3
Cathode 1
Ref 2
3 Anode
TL431
TL431
Figure 4. SOT323-6 pin connections (top view)
TL432
Figure 5. TL431 and TL432 block diagram
Cathode
Ref
Vref
Anode
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Absolute maximum ratings and operating conditions
TL431, TL432
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol
Parameter
Value
Unit
VKA
Ik
Iref
Rthja
Rthjc
Tstg
TJ
ESD
Cathode to anode voltage
Continuous cathode current range
Reference input current range
Thermal resistance junction to ambient(1)
TO-92
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
Thermal resistance junction to case (1)
SO-8 batwing
SOT23-3L
SOT23-5L
SOT323-6L
Storage temperature range
Junction temperature
TL431IY, TL431AIY-T: HBM (human body model) (2)
TL431-TL432: HBM (human body model)
MM: machine model (3)
CDM: charged device model (4)
37
-100 to +150
-0.05 to +10
200
85
248
157
221
30
136
67
110
-65 to +150
150
3000
2000
200
1500
V
mA
mA
°C/W
°C/W
°C
°C
V
1. Short-circuits can cause excessive heating. These values are typical.
2. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a
1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
3. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
4. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
Table 2. Operating conditions
Symbol
Parameter
Value
Unit
VKA
Ik
Toper
Cathode to anode voltage
Cathode current
Operating free-air temperature range
TL431C/AC
TL431I/AI - TL432I/AI
TL431IY/AIY
Vref to 36
1 to 100
0 to +70
-40 to +105
-40 to +125
V
mA
°C
4/21 Doc ID 4467 Rev 11




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