JAJSAY1E
March 2008 – October 2017
LM2854
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
代表的なアプリケーション回路
4
改訂履歴
5
Pin Configuration and Functions
Pin 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
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Switching Frequency
7.3.2
Enable
7.3.3
Soft-Start
7.3.4
Tracking
7.3.5
Pre-Biased Start-up Capability
7.3.6
Feedback Voltage Accuracy
7.3.7
Positive Current Limit
7.3.8
Negative Current Limit
7.3.9
Overtemperature Protection
7.3.10
Loop Compensation
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Soft-Start and Track Mode
7.4.3
Normal Operating Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Input Filter Capacitor
8.2.2.2
AVIN Filtering Components
8.2.2.3
Soft-Start Capacitor
8.2.2.4
Tracking - Equal Soft-Start Time
8.2.2.5
Tracking - Equal Slew Rates
8.2.2.6
Enable and UVLO
8.2.2.7
Output Voltage Setting
8.2.2.8
Compensation Component Selection
8.2.2.9
Filter Inductor and Output Capacitor Selection
8.2.3
Application Curves
8.2.4
System Examples
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
デバイスおよびドキュメントのサポート
11.1
ドキュメントのサポート
11.1.1
関連資料
11.2
商標
11.3
静電気放電に関する注意事項
11.4
Glossary
12
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)
PWP|16
MPDS371A
サーマルパッド・メカニカル・データ
PWP|16
PPTD288A
発注情報
jajsay1e_oa
jajsay1e_pm
6.3
Recommended Operating Conditions
MIN
MAX
UNIT
PVIN to GND
(4)
2.95
5.5
V
AVIN to GND
(4)
2.95
5.5
V
Junction Temperature
−40
125
°C