JAJSHC3A
May 2019 – November 2019
TL431LI-Q1
,
TL432LI-Q1
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
概略回路図
4
改訂履歴
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Parameter Measurement Information
8.1
Temperature Coefficient
8.2
Dynamic Impedance
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.4
Device Functional Modes
9.4.1
Open Loop (Comparator)
9.4.2
Closed Loop
10
Applications 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
10.2.3.1
Basic Operation
10.2.3.1.1
Overdrive
10.2.3.2
Output Voltage and Logic Input Level
10.2.3.2.1
Input Resistance
10.2.4
Application Curves
10.2.5
Precision LED Lighting Current Sink Regulator
10.2.5.1
Design Requirements
10.2.5.2
Detailed Design Procedure
10.2.5.2.1
Basic Operation
10.2.5.2.1.1
Output Current Range and Accuracy
10.2.5.2.2
Power Consumption
10.2.6
Shunt Regulator/Reference
10.2.6.1
Design Requirements
10.2.6.2
Detailed Design Procedure
10.2.6.2.1
Programming Output/Cathode Voltage
10.2.6.2.2
Total Accuracy
10.2.6.2.3
Stability
10.2.6.2.4
Start-up Time
10.2.6.3
Application Curves
10.2.7
Isolated Flyback with Optocoupler
10.2.7.1
Design Requirements
10.2.7.2
Detailed Design Procedure
10.2.7.2.1
TL431 Feedback Loop Error Calculation
10.3
System Examples
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
デバイスおよびドキュメントのサポート
13.1
デバイス・サポート
13.1.1
デバイスの項目表記
13.2
ドキュメントのサポート
13.2.1
関連資料
13.3
関連リンク
13.4
ドキュメントの更新通知を受け取る方法
13.5
サポート・リソース
13.6
商標
13.7
静電気放電に関する注意事項
13.8
Glossary
14
メカニカル、パッケージ、および注文情報
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
DBZ|3
MPDS108G
サーマルパッド・メカニカル・データ
発注情報
jajshc3a_oa
jajshc3a_pm
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
R
b
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 V
I(BATT)
.
Figure 34.
Voltage Monitor
Figure 35.
Delay Timer
Figure 36.
Precision Current Limiter
Figure 37.
Precision Constant-Current Sink