SNVS159H
October 2001 – July 2015
LP3981
PRODUCTION DATA.
1
Features
2
Applications
3
Description
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
6.6
Timing Requirements
6.7
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
On/Off Input Operation
8.3.2
Fast On-Time
8.4
Device Functional Modes
8.4.1
Operation with VOUT(TARGET) + 0.3 V ≤ VIN ≤ 6 V
8.4.2
Operation With EN Control
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Power Dissipation and Device Operation
9.2.2.2
External Capacitors
9.2.2.3
Input Capacitor
9.2.2.4
Output Capacitor
9.2.2.5
No-Load Stability
9.2.2.6
Noise Bypass Capacitor
9.2.2.7
Capacitor Characteristics
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Community Resources
12.2
Trademarks
12.3
Electrostatic Discharge Caution
12.4
Glossary
13
Mechanical, Packaging, and Orderable Information
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)
NGC|6
MPDS392
DGK|8
MPDS028E
サーマルパッド・メカニカル・データ
7 Parameter Measurement Information
Figure 15. Line Transient Response Input Perturbation
Figure 16. PSRR Input Perturbation