JAJSGE2
October 2018
TPS92515AHV-Q1
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
降圧LEDドライバ・アプリケーションの概略図
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
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
General Operation
8.3.2
Current Sense Comparator
8.3.3
OFF Timer
8.3.4
OFF-Timer, Shunt FET Dimming or Shunted Output Condition
8.3.5
Internal N-channel MOSFET
8.3.5.1
Drop-Out
8.3.6
VCC Internal Regulator and Undervoltage Lockout (UVLO)
8.3.7
Analog Adjust Input
8.3.7.1
IADJ Pin Clamp
8.3.7.2
IADJ Pin Clamp Characteristic
8.3.7.3
Analog Adjust (IADJ Pin) Control Methods
8.3.7.4
IADJ Control Method Notes
8.3.8
Thermal Protection
8.3.8.1
Maximum Output Current and Junction Temperature
8.3.9
Junction Temperature Relative Estimation
8.3.10
BOOT and BOOT UVLO
8.3.10.1
Start-Up, BOOT-UVLO and Pre-Charged Condition
8.3.11
PWM (UVLO and Enable)
8.3.11.1
Using PWM for UVLO (Undervoltage Lockout) Protection
8.3.11.1.1
UVLO Programming Resistors
8.3.11.2
Using PWM for Digitally Controlled Enable
8.3.11.3
UVLO: VIN, VCC and BOOT UVLO
8.3.11.4
Analog and PWM Dimming - Normalized Results and Comparison
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
General Design Procedure
9.2.1.1
Calculating Duty Cycle
9.2.1.2
Calculate OFF-Time Estimate
9.2.1.3
Calculate OFF-Time Resistor ROFF
9.2.1.4
Calculate the Minimum Inductance Value
9.2.1.5
Calculate the Sense Resistance
9.2.1.6
Calculate Input Capacitance
9.2.1.7
Calculate Output Capacitance
9.2.2
Design Requirements
9.2.3
Detailed Design Procedure
9.2.3.1
Calculating Duty Cycle
9.2.3.2
Calculate OFF-Time Estimate
9.2.3.3
Calculate OFF-Time Resistor ROFF
9.2.3.4
Calculate the Inductance Value
9.2.3.5
Calculate the Sense Resistance
9.2.3.6
Calculate Input Capacitance
9.2.3.7
Verify Peak Current for Inductor Selection
9.2.3.8
Calculate Output Capacitance
9.2.3.9
Calculate UVLO Resistance Values
9.2.4
Application Curves
9.3
Dos and Don'ts
10
Power Supply Recommendations
10.1
Input Source Direct from Battery
10.2
Input Source from a Boost Stage
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
デバイスおよびドキュメントのサポート
12.1
ドキュメントのサポート
12.1.1
関連資料
12.1.1.1
関連リンク
12.2
ドキュメントの更新通知を受け取る方法
12.3
コミュニティ・リソース
12.4
商標
12.5
静電気放電に関する注意事項
12.6
Glossary
13
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)
DGQ|10
MPDS043F
サーマルパッド・メカニカル・データ
DGQ|10
PPTD304B
発注情報
jajsge2_oa
8.4
Device Functional Modes
This device has no additional functional modes.