JAJSA30G
November 2002 – May 2019
LM2733
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
効率と負荷電流との関係
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
7.4
Device Functional Modes
7.4.1
Shutdown Pin Operation
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
Selecting the External Capacitors
8.2.2.2
Selecting the Output Capacitor
8.2.2.3
Selecting the Input Capacitor
8.2.2.4
Feedforward Compensation
8.2.2.5
Selecting Diodes
8.2.2.6
Setting the Output Voltage
8.2.2.7
Switching Frequency
8.2.2.8
Duty Cycle
8.2.2.9
Inductance Value
8.2.2.10
Maximum Switch Current
8.2.2.11
Calculating Load Current
8.2.2.12
Design Parameters VSW and ISW
8.2.2.13
Thermal Considerations
8.2.2.14
Minimum Inductance
8.2.2.15
Inductor Suppliers
8.2.3
Application Curves
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
商標
11.2
静電気放電に関する注意事項
11.3
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)
DBV|5
MPDS018T
サーマルパッド・メカニカル・データ
発注情報
jajsa30g_oa
jajsa30g_pm
6.6
Typical Characteristics
Unless otherwise specified: V
IN
= 5 V,
SHDN
pin is tied to V
IN
.
Figure 1.
Iq V
IN
(Active) vs Temperature - "X"
Figure 3.
Oscillator Frequency vs Temperature - "X"
Figure 5.
Max. Duty Cycle vs Temperature - "X"
Figure 7.
Feedback Voltage vs Temperature
Figure 9.
Current Limit vs Temperature
Figure 11.
Efficiency vs Load Current (V
OUT
= 12 V) - "X"
Figure 13.
Efficiency vs Load Current (V
OUT
= 20 V) - "X"
Figure 15.
Efficiency vs Load Current (V
OUT
= 30 V) - "X"
Figure 17.
Efficiency vs Load Current (V
OUT
= 40 V) - "X"
Figure 19.
Efficiency vs Load (V
OUT
= 20 V) - "Y"
Figure 21.
Efficiency vs Load (V
OUT
= 30 V) - "Y"
Figure 23.
Efficiency vs Load (V
OUT
= 40 V) - "Y"
Figure 2.
Iq V
IN
(Active) vs Temperature - "Y"
Figure 4.
Oscillator Frequency vs Temperature - "Y"
Figure 6.
Max. Duty Cycle vs Temperature - "Y"
Figure 8.
R
DS
(ON) vs Temperature
Figure 10.
R
DS(ON)
vs V
IN
Figure 12.
Efficiency vs Load Current (V
OUT
= 15 V) - "X"
Figure 14.
Efficiency vs Load Current (V
OUT
= 25 V) - "X"
Figure 16.
Efficiency vs Load Current (V
OUT
= 35 V) - "X"
Figure 18.
Efficiency vs Load (V
OUT
= 15 V) - "Y"
Figure 20.
Efficiency vs Load (V
OUT
= 25 V) - "Y"
Figure 22.
Efficiency vs Load (V
OUT
= 35 V) - "Y"