JAJS782G
june 1999 – march 2023
LM2576
,
LM2576HV
PRODUCTION DATA
1
特長
2
アプリケーション
3
概要
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics: 3.3 V
6.6
Electrical Characteristics: 5 V
6.7
Electrical Characteristics: 12 V
6.8
Electrical Characteristics: 15 V
6.9
Electrical Characteristics: Adjustable Output Voltage
6.10
Electrical Characteristics: All Output Voltage Versions
6.11
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Undervoltage Lockout
7.3.2
Delayed Start-Up
7.3.3
Adjustable Output, Low-Ripple Power Supply
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Active Mode
7.4.3
Current Limit
8
Application and Implementation
8.1
Application Information
8.1.1
Input Capacitor (CIN)
8.1.2
Inductor Selection
8.1.3
Inductor Ripple Current
8.1.4
Output Capacitor
8.1.5
Catch Diode
8.1.6
Output Voltage Ripple and Transients
8.1.7
Feedback Connection
8.1.8
ON /OFF INPUT
8.1.9
Inverting Regulator
8.1.10
Negative Boost Regulator
8.2
Typical Applications
8.2.1
Fixed Output Voltage Version
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Custom Design with WEBENCH® Tools
8.2.1.2.2
Inductor Selection (L1)
8.2.1.2.3
Output Capacitor Selection (COUT)
8.2.1.2.4
Catch Diode Selection (D1)
8.2.1.2.5
Input Capacitor (CIN)
8.2.1.3
Application Curves
8.2.2
Adjusted Output Voltage Version
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Programming Output Voltage
8.2.2.2.2
Inductor Selection (L1)
8.2.2.2.3
Output Capacitor Selection (COUT)
8.2.2.2.4
Catch Diode Selection (D1)
8.2.2.2.5
Input Capacitor (CIN)
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
8.4.3
Grounding
8.4.4
Heat Sink and Thermal Considerations
9
Device and Documentation Support
9.1
Device Support
9.1.1
Device Nomenclature
9.1.1.1
Definition of Terms
9.1.2
Development Support
9.1.2.1
Custom Design with WEBENCH® Tools
9.2
Documentation Support
9.2.1
Related Documentation
9.3
サポート・リソース
9.4
ドキュメントの更新通知を受け取る方法
9.5
Trademarks
9.6
静電気放電に関する注意事項
9.7
用語集
10
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)
NDH|5
NEB|5
KTT|5
KC|5
サーマルパッド・メカニカル・データ
KTT|5
PPTD277
発注情報
jajs782g_oa
jajs782g_pm
8.2.1
Fixed Output Voltage Version
C
IN
— 100-μF, 75-V, Aluminum Electrolytic C
OUT
— 1000-μF, 25-V, Aluminum Electrolytic D
1
— Schottky, MBR360 L
1
— 100 μH, Pulse Eng. PE-92108 R
1
— 2 k, 0.1% R
2
— 6.12 k, 0.1%
Figure 8-3
Fixed Output Voltage Versions