JAJSC83E
May 2016 – January 2021
TPS25940-Q1
PRODMIX
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison Table
6
Pin Configuration and 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
Timing Requirements
7.7
Typical Characteristics
8
Parametric Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Enable and Adjusting Undervoltage Lockout
9.3.2
Overvoltage Protection (OVP)
9.3.3
Hot Plug-In and In-Rush Current Control
9.3.4
Overload and Short Circuit Protection
9.3.4.1
Overload Protection
9.3.4.2
Short Circuit Protection
9.3.4.3
Start-Up with Short on Output
9.3.4.4
Constant Current Limit Behavior During Overcurrent Faults
9.3.5
FAULT Response
9.3.6
Current Monitoring
9.3.7
Power Good Comparator
9.3.8
IN, OUT and GND Pins
9.3.9
Thermal Shutdown
9.4
Device Functional Modes
9.4.1
DevSleep Mode
9.4.2
Shutdown Control
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Step by Step Design Procedure
10.2.2.2
Programming the Current-Limit Threshold: R(ILIM) Selection
10.2.2.3
Undervoltage Lockout and Overvoltage Set Point
10.2.2.4
Programming Current Monitoring Resistor—RIMON
10.2.2.5
Setting Output Voltage Ramp Time (tdVdT)
10.2.2.5.1
Case1: Start-Up Without Load: Only Output Capacitance C(OUT) Draws Current During Start-Up
10.2.2.5.2
Case 2: Start-Up With Load: Output Capacitance C(OUT) and Load Draws Current During Start-Up
10.2.2.6
Programing the Power Good Set Point
10.2.2.7
Support Component Selections—R6, R7 and CIN
10.2.3
Application Curves
10.2.4
System Examples
10.2.4.1
VBUS Short-to-Battery, Short-to-Ground Protection of USB Port in Automotive Systems
10.2.4.2
Power Failure Protection for Holdup Power
10.2.4.3
Overload Detection Using TPS25940xx-Q1
11
Power Supply Recommendations
11.1
Transient Protection
11.2
Output Short-Circuit Measurements
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Documentation Support
13.1.1
Related Documentation
13.2
サポート・リソース
13.3
Trademarks
13.4
静電気放電に関する注意事項
13.5
用語集
14
Mechanical, Packaging, and Orderable Information
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)
RVC|20
MPQF234A
サーマルパッド・メカニカル・データ
RVC|20
QFND186C
発注情報
jajsc83e_oa
jajsc83e_pm
1
特長
車載アプリケーション認定済み
下記内容で AEC-Q100 認定済み:
デバイス温度グレード 1:-40℃~+125℃の動作時周囲温度範囲
デバイス HBM ESD 分類レベル 2
デバイス CDM ESD 分類レベル C5
動作電圧 2.7V~18V、20V (最大値)
全 R
ON
:40mΩ (標準値)
調整可能な電流制限:0.6A~5.3A (±8%)
IMON 電流インジケータ出力
TPS25940-Q1/TPS25940L-Q1 で ±8% の精度
調整可能な低電圧 / 過電圧スレッショルド (±2%)
逆電流ブロッキング
1μs の逆電圧シャットオフ
プログラム可能な dV
o
/dt 制御
パワーグッドおよびフォルト出力
バッテリ短絡保護
グランド短絡保護
TPS25940-Q1/TPS259401A-Q1:自動再試行
TPS25940L-Q1:ラッチオフ