ZHCSA03C july 2012 – november 2020 TL1431-SP
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 说明
- 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
9.2.8 System Examples
Table 9-2 lists example circuits of the TL1431.
Table 9-2 Table of Example Circuits
| APPLICATION | FIGURE |
|---|---|
| Shunt regulator | Figure 9-3 |
| Single-supply comparator with temperature-compensated threshold | Figure 9-4 |
| Precision high-current series regulator | Figure 9-5 |
| Output control of a three-terminal fixed regulator | Figure 9-6 |
| Higher-current shunt regulator | Figure 9-7 |
| Crowbar | Figure 9-8 |
| Precision 5-V, 1.5-A, 0.5% regulator | Figure 9-9 |
| 5-V precision regulator | Figure 9-10 |
| PWM converter with 0.5% reference | Figure 9-11 |
| Voltage monitor | Figure 9-12 |
| Delay timer | Figure 9-13 |
| Precision current limiter | Figure 9-14 |
| Precision constant-current sink | Figure 9-15 |
R must provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
Figure 9-3 Shunt Regulator
R must provide cathode current ≥1 mA to the TL1431 at minimum V(BATT).
Figure 9-5 Precision High-Current Series Regulator
Figure 9-7 Higher-Current Shunt Regulator
Figure 9-9 Precision 5-V, 1.5-A, 0.5% Regulator
Figure 9-11 PWM Converter With 0.5% Reference
Figure 9-13 Delay Timer
Figure 9-15 Precision Constant-Current Sink
Figure 9-4 Single-Supply Comparator With Temperature-Compensated Threshold
Figure 9-6 Output Control of a
Three-Terminal Fixed Regulator
See the stability boundary
conditions in Figure 6-16 to determine allowable values for C.
Figure 9-8 Crowbar
Rb must provide cathode current ≥1 mA to the TL1431.
Figure 9-10 5-V Precision Regulator
Select R3 and R4 to provide the desired LED intensity and cathode current ≥1 mA to the TL1431.
Figure 9-12 Voltage Monitor
Figure 9-14 Precision Current Limiter