Datasheet TS431 (STMicroelectronics)

TS431
Adjustable shunt voltage reference IC (automotive for SOT23-5)
Datasheet
-
production data Description Z
The TS431 is a low-voltage, three-terminal,
TO92
adjustable shunt voltage reference. The output (plastic package) voltage can be set to any value between Vref (1.24 V) and 6 V using two external resistors. The TS431 is able to operate at a lower voltage (1.24 V) and lower cathode current than the widely-
L
used TL431 and TL1431 shunt voltage reference.
SOT23-5
When driving an optocoupler, the TS431 is (plastic micropackage) particularly suitable for regulating 3.3 V switching power supplies.
Features
AEC-Q100 qualified (SOT23-5) Low voltage operation: 1.24 to 6 V 2%, 1% and 0.5% voltage precision Wide operating range cathode current: 60 µA to 30 mA Low output impedance: 0.2 Ω Typically stable for any capacitive loads ESD protection: Human body model: 2 kV – Machine model: 200 V 100 ppm/°C temperature coefficient Automotive grade version available June 2018 DocID5558 Rev 12 1/16 This is information on a product in full production. www.st.com Document Outline 1 Pinout Figure 1. Pinout Z TO92 (plastic package) Figure 2. Pinout L SOT23-5 (plastic micropackage) 2 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Table 2. Operating conditions Table 3. Thermal data 3 Electrical characteristics Table 4. Tamb = 25 °C (unless otherwise specified) Definition of output voltage change over temperature range Figure 3. Output voltage change over temperature range Figure 4. Reference voltage vs. temperature Figure 5. Test circuit for VKA = Vref Figure 6. Cathode voltage vs. cathode current Figure 7. Cathode voltage vs. cathode current Figure 8. Reference input current vs. temperature Figure 9. Static impedance vs. temperature Figure 10. Off-state current vs. temperature Figure 11. Test circuit for off-state current measurement Figure 12. Ratio of change in reference input voltage to change in VKA voltage vs. temperature Figure 13. Test circuit for VKA > Vref Figure 14. Phase and gain vs. frequency Figure 15. Test circuit for phase and gain measurement Figure 16. Pulse response at Ik = 100 µA Figure 17. Test circuit for pulse response at Ik = 100 µA Figure 18. Pulse response at Ik = 1 mA Figure 19. Test circuit for pulse response at Ik = 1 mA Figure 20. Equivalent input noise vs. frequency 4 Application information 5 Package information 5.1 SOT23-5 package information Figure 21. SOT23-5 package outline Table 5. SOT23-5 package mechanical data 5.2 TO92 (tape ammopack and tape and reel) package information Figure 22. TO92 (tape ammopack and tape and reel) package outline Table 6. TO92 (tape ammopack and tape and reel) package mechanical data 5.3 TO92 (bulk) package information Figure 23. TO92 (bulk) package outline Table 7. TO92 (bulk) package mechanical data 6 Ordering information Table 8. Order codes 7 Revision history Table 9. Document revision history