JAJSI44
October 2019
LMR33610
PRODUCTION DATA.
1
特長
2
アプリケーション
3
概要
Device Images
概略回路図
効率と出力電流との関係 VOUT = 5V、400kHz
4
改訂履歴
5
概要(続き)
6
Device Comparison Table
7
Pin Configuration and Functions
Pin Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Timing Characteristics
8.7
System Characteristics
8.8
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Power-Good Flag Output
9.3.2
Enable and Start-up
9.3.3
Current Limit and Short Circuit
9.3.4
Undervoltage Lockout and Thermal Shutdown
9.4
Device Functional Modes
9.4.1
Auto Mode
9.4.2
Dropout
9.4.3
Minimum Switch On-Time
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Custom Design With WEBENCH® Tools
10.2.2.2
Choosing the Switching Frequency
10.2.2.3
Setting the Output Voltage
10.2.2.4
Inductor Selection
10.2.2.5
Output Capacitor Selection
10.2.2.6
Input Capacitor Selection
10.2.2.7
CBOOT
10.2.2.8
VCC
10.2.2.9
CFF Selection
10.2.2.10
External UVLO
10.2.2.11
Maximum Ambient Temperature
10.2.3
Application Curves
10.3
What to Do and What Not to Do
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.1.1
Ground and Thermal Considerations
12.2
Layout Example
13
デバイスおよびドキュメントのサポート
13.1
デバイス・サポート
13.1.1
開発サポート
13.1.1.1
WEBENCH®ツールによるカスタム設計
13.2
ドキュメントのサポート
13.2.1
関連資料
13.3
ドキュメントの更新通知を受け取る方法
13.4
サポート・リソース
13.5
商標
13.6
静電気放電に関する注意事項
13.7
Glossary
14
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)
DDA|8
MPDS092F
サーマルパッド・メカニカル・データ
DDA|8
PPTD058I
発注情報
jajsi44_oa
8.8
Typical Characteristics
Unless otherwise specified the following conditions apply: T
A
= 25°C and V
IN
= 12 V
V
FB
= 1.2 V
Figure 1.
Non-Switching Input Supply Current
V
OUT
= 0 V
ƒ
S
= 400 kHz
See
Figure 36
Figure 3.
Short-Circuit Output Current
I
OUT
= 1 mA
See
Figure 36
Figure 5.
UVLO Thresholds
EN = 0 V
Figure 2.
Shutdown Supply Current
Figure 4.
Precision Enable Thresholds
I
OUT
= 0 A
V
OUT
= 5 V
See
Figure 36
ƒ
SW
= 400 kHz
Figure 6.
I
PEAK-MIN