JAJSIQ7B
March 2020 – June 2021
LM61435-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
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 Characteristics
7.7
Systems Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
EN/SYNC Uses for Enable and VIN UVLO
8.3.2
EN/SYNC Pin Uses for Synchronization
8.3.3
Clock Locking
8.3.4
Adjustable Switching Frequency
8.3.5
PGOOD Output Operation
8.3.6
Internal LDO, VCC UVLO, and BIAS Input
8.3.7
Bootstrap Voltage and VCBOOT-UVLO (CBOOT Pin)
8.3.8
Adjustable SW Node Slew Rate
8.3.9
Spread Spectrum
8.3.10
Soft Start and Recovery From Dropout
8.3.11
Output Voltage Setting
8.3.12
Overcurrent and Short Circuit Protection
8.3.13
Thermal Shutdown
8.3.14
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
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
BOOT Capacitor
9.2.2.7
BOOT Resistor
9.2.2.8
VCC
9.2.2.9
BIAS
9.2.2.10
CFF and RFF Selection
9.2.2.11
External UVLO
9.2.3
Application Curves
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
Receiving Notification of Documentation Updates
12.3
サポート・リソース
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
メカニカル・データ(パッケージ|ピン)
RJR|14
サーマルパッド・メカニカル・データ
発注情報
jajsiq7b_oa
jajsiq7b_pm
8.4
Device Functional Modes