ZHCSJO9A May 2019 – November 2019 TL431LI-Q1 , TL432LI-Q1
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Parameter Measurement Information
- 9 Detailed Description
-
10Applications and Implementation
- 10.1 Application Information
- 10.2 Typical Applications
- 10.3 System Examples
- 11Power Supply Recommendations
- 12Layout
- 13器件和文档支持
- 14机械、封装和可订购信息
10.3 System Examples
R should provide cathode current ≥0.6 mA to the TL431LI-Q1 at minimum V(BATT).
Figure 27. Precision High-Current Series Regulator 
Figure 28. Output Control of a Three-Terminal Fixed Regulator 
Figure 29. High-Current Shunt Regulator 
Refer to the stability boundary conditions in Figure 12 to determine allowable values for C.
Figure 30. Crowbar Circuit 
Figure 31. Precision 5-V, 1.5-A Regulator 
Rb should provide cathode current ≥0.6 mA to the TL431LI-Q1.
Figure 32. Efficient 5-V Low-Dropout (LDO) Regulator Configuration 
Figure 33. PWM Converter With Reference 
Select R3 and R4 to provide the desired LED intensity and cathode current ≥0.6 mA to the TL431LI-Q1 at the available VI(BATT).
Figure 34. Voltage Monitor 
Figure 35. Delay Timer 
Figure 36. Precision Current Limiter 
Figure 37. Precision Constant-Current Sink