Datasheet
Table Of Contents
- 1 Schematic diagrams
- 2 Absolute maximum ratings and operating conditions
- 3 Electrical characteristics
- Table 3. Electrical characteristics for TL1431C, TL1431AC
- Table 4. Electrical characteristics for TL1431I, TL1431AI
- Table 5. Electrical characteristics for TL1431IY, TL1431AIY
- Figure 4. Test circuit VKA = VREF
- Figure 5. Test circuit for VKA > VREF
- Figure 6. Test circuit for IOFF
- Figure 7. Test circuit for phase margin and voltage gain
- Figure 8. Test circuit for response time
- Figure 9. Reference voltage vs. temperature
- Figure 10. Reference voltage vs. cathode current
- Figure 11. Reference voltage vs. cathode current (IK = 0 to 1 mA)
- Figure 12. Reference current vs. temperature
- Figure 13. Off-state cathode current vs. temperature
- Figure 14. Ratio of change in VREF to change in VKA vs. temperature
- Figure 15. Drift of RKA vs. temperature
- Figure 16. Maximum operating current vs. temperature
- Figure 17. Gain and phase vs. frequency
- Figure 18. Stability behavior with capacitive loads
- Figure 19. Maximum power dissipation
- Figure 20. Pulse response for IK = 1 mA
- 4 Parameter definitions
- 5 Package mechanical data
- Figure 23. SO-8 batwing package mechanical drawing
- Table 6. SO-8 batwing package mechanical data
- Figure 24. TO-92 ammopack and tape and reel package mechanical drawing
- Table 7. TO-92 ammopack and tape and reel package mechanical data
- Figure 25. TO-92 bulk package mechanical drawing
- Table 8. TO-92 bulk package mechanical data
- 6 Ordering information
- 7 Revision history
Absolute maximum ratings and operating conditions TL1431
4/18 Doc ID 5286 Rev 5
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
KA
Cathode to anode voltage 37 V
I
k
Continuous cathode current range -100 to +150 mA
I
ref
Reference input current range -0.05 to +10 mA
T
j
Junction temperature +150 °C
P
d
Power dissipation
(1)
TO92
SO-8 batwing
1. Calculated with T
j
=+150°C and T
amb
=+25°C with relative R
thja
depending on the package.
625
960
mW
T
stg
Storage temperature range -65 to +150 °C
ESD
HBM: human body model
(2)
MM: machine model
(3)
CDM: charged device model
(4)
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.
2000
200
1500
V
Table 2. Operating conditions
Symbol Parameter Value Unit
V
KA
Cathode to anode voltage V
ref
to 36 V
I
k
Cathode current 1 to 100 mA
T
oper
Operating free-air temperature range
TL1431C/AC
TL1431I/AI
TL1431IY/AIY
-20 to +70
-40 to +105
-40 to +125
°C
R
thja
Thermal resistance junction to ambient
SO-8 batwing
TO92
130
200
°C/W