SGLS302G March 2005 – May 2020 TL431-Q1 , TL432-Q1
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
Package Options
Refer to the PDF data sheet for device specific package drawings
Mechanical Data (Package|Pins)
- DBZ|3
Thermal pad, mechanical data (Package|Pins)
Orderable Information
9.2.2 Other Application Circuits
Figure 28 to Figure 40 show application circuit examples using the TL431-Q1 device. Customers must fully validate and test any circuit before implementing a design based on an example in this section. Unless otherwise noted, the design procedures in Comparator Application are applicable.
A. R must provide cathode current ≥1 mA to the TL431-Q1 at minimum VI(BATT).
Figure 28. Shunt Regulator 
A. R must provide cathode current ≥1 mA to the TL431-Q1 at minimum VI(BATT).
Figure 30. Precision High-Current Series Regulator 
Figure 32. High-Current Shunt Regulator 
Figure 34. Precision 5-V, 1.5-A Regulator 
Figure 29. Single-Supply Comparator with Temperature-Compensated Threshold 
Figure 31. Output Control of a Three-Terminal Fixed Regulator 
1. Rb must provide cathode current ≥1 mA to the TL431-Q1.
Figure 35. Efficient 5-V Precision Regulator 
Figure 36. PWM Converter with Reference 
Figure 38. Delay Timer 
Figure 40. Precision Constant-Current Sink 
A. R3 and R4 are selected to provide the desired LED intensity and cathode current ≥1 mA to the TL431-Q1 at the available VI(BATT).
Figure 37. Voltage Monitor 
Figure 39. Precision Current Limiter