SNVSBB0A May 2019 – November 2019 ATL431LI-Q1 , ATL432LI-Q1
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 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
- 10.2.1 Comparator With Integrated Reference
- 10.2.2 Design Requirements
- 10.2.3 Detailed Design Procedure
- 10.2.4 Application Curves
- 10.2.5 Precision LED Lighting Current Sink Regulator
- 10.2.6 Shunt Regulator/Reference
- 10.2.7 Isolated Flyback with Optocoupler
- 10.2.8 Adjustable Reference for Tracking LDO
- 10.3 System Examples
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
- DBZ|3
Thermal pad, mechanical data (Package|Pins)
Orderable Information
10.3 System Examples
R should provide cathode current ≥ 80 µA to the ATL431LI-Q1 at minimum V(BATT).
Figure 31. Precision High-Current Series Regulator 
Figure 32. Output Control of a Three-Terminal Fixed Regulator 
Figure 33. High-Current Shunt Regulator 
Refer to the stability boundary conditions in Figure 13 to determine allowable values for C.
Figure 34. Crowbar Circuit 
Figure 35. Precision 5-V, 1.5-A Regulator 
Rb should provide cathode current ≥80 µA to the ATL431LI-Q1.
Figure 36. Efficient 5-V Low-Dropout (LDO) Regulator Configuration 
Figure 37. PWM Converter With Reference 
Select R3 and R4 to provide the desired LED intensity and cathode current ≥80 µA to the ATL431LI-Q1 at the available VI(BATT).
Figure 38. Voltage Monitor 
Figure 39. Delay Timer 
Figure 40. Precision Current Limiter 
Figure 41. Precision Constant-Current Sink