JAJSIO6B
September 2019 – September 2020
LMR36503-Q1
PRODUCTION DATA
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
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD (Automotive) Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Characteristics
7.7
Switching Characteristics
7.8
System Characteristics
7.9
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable, Start-up and Shutdown
8.3.2
External CLK SYNC (with MODE/SYNC)
8.3.2.1
Pulse-Dependent MODE/SYNC Pin Control
8.3.3
Adjustable Switching Frequency (with RT)
8.3.4
Power-Good Output Operation
8.3.5
Internal LDO, VCC UVLO, and VOUT/BIAS Input
8.3.6
Bootstrap Voltage and VCBOOT-UVLO (CBOOT Terminal)
8.3.7
Output Voltage Selection
8.3.8
Soft Start and Recovery from Dropout
8.3.8.1
Recovery from Dropout
8.3.9
Current Limit and Short Circuit
8.3.10
Thermal Shutdown
8.3.11
Input Supply Current
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Standby Mode
8.4.3
Active Mode
8.4.3.1
CCM Mode
8.4.3.2
Auto Mode - Light Load Operation
8.4.3.2.1
Diode Emulation
8.4.3.2.2
Frequency Reduction
8.4.3.3
FPWM Mode - Light Load Operation
8.4.3.4
Minimum On-time (High Input Voltage) Operation
8.4.3.5
Dropout
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Choosing the Switching Frequency
9.2.2.2
Setting the Output Voltage
9.2.2.2.1
FB for Adjustable Output
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
CBOOT
9.2.2.7
VCC
9.2.2.8
CFF Selection
9.2.2.8.1
External UVLO
9.2.2.9
Maximum Ambient Temperature
9.2.3
Application Curves
9.3
What to Do and What Not to Do
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Ground and Thermal Considerations
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
ドキュメントの更新通知を受け取る方法
12.3
サポート・リソース
12.4
Trademarks
12.5
静電気放電に関する注意事項
12.6
用語集
13
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)
RPE|9
MPQF528A
サーマルパッド・メカニカル・データ
RPE|9
QFND681A
発注情報
jajsio6b_oa
jajsio6b_pm
11.2
Layout Example
Figure 11-2
Example Layout