JAJS851G
April 2000 – May 2019
LM2585
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
12V フライバック・レギュレータ設計例
4
改訂履歴
5
Pin Configurations
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Ratings
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: Adjustable
6.9
Electrical Characteristics: All Versions
6.10
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Step-Up (Boost) Regulator Operation
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Boost Regulator Applications
8.2.2
Typical Flyback Regulator Applications
8.2.2.1
Transformer Selection (T)
8.2.2.2
Transformer Footprints
8.2.2.2.0.1
T6
8.2.2.2.0.2
T6
8.2.3
Design Requirements
8.2.4
Detailed Design Procedure
8.2.4.1
Custom Design With WEBENCH® Tools
8.2.4.2
Programming Output Voltage (Selecting R1 And R2)
8.2.4.3
Short Circuit Condition
8.2.4.4
Flyback Regulator Input Capacitors
8.2.4.5
Switch Voltage Limits
8.2.4.6
Output Voltage Limitations
8.2.4.7
Noisy Input Line Condition
8.2.4.8
Stability
8.2.5
Application Curve
8.3
Additional Application Examples
8.3.1
Test Circuits
9
Layout
9.1
Layout Guidelines
9.2
Heat Sink/Thermal Considerations
10
デバイスおよびドキュメントのサポート
10.1
デバイス・サポート
10.1.1
デベロッパー・ネットワークの製品に関する免責事項
10.1.2
開発サポート
10.1.2.1
WEBENCH®ツールによるカスタム設計
10.2
ドキュメントの更新通知を受け取る方法
10.3
コミュニティ・リソース
10.4
商標
10.5
静電気放電に関する注意事項
10.6
Glossary
11
メカニカル、パッケージ、および注文情報
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)
NDH|5
MMSF011
KTT|5
MPSF007E
サーマルパッド・メカニカル・データ
KTT|5
PPTD277
発注情報
jajs851g_oa
jajs851g_pm
6.10
Typical Characteristics
Figure 1.
Supply Current vs Temperature
Figure 3.
ΔReference Voltage vs Supply Voltage
Figure 5.
Feedback Pin Bias Current vs Temperature
Figure 7.
Switch Transconductance vs Temperature
Figure 9.
Error Amp Transconductance vs Temperature
Figure 11.
Short Circuit Frequency vs Temperature
Figure 2.
Reference Voltage vs Temperature
Figure 4.
Current Limit vs Temperature
Figure 6.
Switch Saturation Voltage vs Temperature
Figure 8.
Oscillator Frequency vs Temperature
Figure 10.
Error Amp Voltage Gain vs Temperature