JAJSM35B
December 2015 – July 2021
LM53625-Q1
,
LM53635-Q1
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Device Comparison
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
System Characteristics
7.7
Timing Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.2.1
Control Scheme
8.3
Feature Description
8.3.1
RESET Flag Output
8.3.2
Enable and Start-Up
8.3.3
Soft-Start Function
8.3.4
Current Limit
8.3.5
Hiccup Mode
8.3.6
Synchronizing Input
8.3.7
Undervoltage Lockout (UVLO) and Thermal Shutdown (TSD)
8.3.8
Input Supply Current
8.4
Device Functional Modes
8.4.1
AUTO Mode
8.4.2
FPWM Mode
8.4.3
Dropout
8.4.4
Input Voltage Frequency Foldback
8.5
Spread-Spectrum Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
General Application
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
External Components Selection
9.2.1.2.1.1
Input Capacitors
9.2.1.2.1.1.1
Input Capacitor Selection
9.2.1.2.1.2
Output Inductors and Capacitors Selection
9.2.1.2.1.2.1
Inductor Selection
9.2.1.2.1.2.2
Output Capacitor Selection
9.2.1.2.2
Setting the Output Voltage
9.2.1.2.2.1
FB for Adjustable Versions
9.2.1.2.3
VCC
9.2.1.2.4
BIAS
9.2.1.2.5
CBOOT
9.2.1.2.6
Maximum Ambient Temperature
9.2.1.3
Application Curves
9.2.2
Fixed 5-V Output for USB-Type Applications
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.3
Application Curves
9.2.3
Fixed 3.3-V Output
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.3
Application Curves
9.2.4
Adjustable Output
9.2.4.1
Design Requirements
9.2.4.2
Detailed Design Procedure
9.2.4.3
Application Curves
9.3
What to Do and What Not to Do
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Receiving Notification of Documentation Updates
12.4
サポート・リソース
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
1
特長
AEC-Q100 車載認証済み:
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 分類レベル 2
デバイス CDM 分類レベル C6
–40℃~+150℃の接合部温度範囲
15µA (標準値) の静止電流 (無負荷、3.3V 出力時)
ウェッタブル・フランク付き / なしの 5.0mm × 4.0mm VQFN パッケージ (V
IN
間隔 0.6mm)
低 EMI およびスイッチ・ノイズ
スペクトラム拡散オプション
外部周波数同期
内部フィルタおよび 3ms リリース・タイマ付きの
RESET
出力
強制 PWM モードをピンにより選択可能
補償、ソフトスタート、電流制限、サーマル・シャットダウン、UVLO を内蔵
0.6V のドロップアウト (3.5A、T
A
= 105℃)
±1% の出力電圧精度 (T
J
= –40℃~125℃)
固定出力 (5V、3.3V)、可変出力の製品を提供