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具有 17V 最大输入电压的 LMZ21700 650mA 微型模块
ZHCSD73D
August 2012 – August 2018
LMZ21700
PRODUCTION DATA.
CONTENTS
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具有 17V 最大输入电压的 LMZ21700 650mA 微型模块
1
特性
2
应用
3
说明
Device Images
简化原理图
VIN = 12V 时的效率
4
修订历史记录
5
Pin Configuration and Functions
Table 1.
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Handling 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
Package Construction
7.4
Feature Description
7.4.1
Input Under Voltage Lockout
7.4.2
Enable Input (EN)
7.4.3
Softstart and Tracking Function (SS)
7.4.4
Power Good Function (PG)
7.4.5
Output Voltage Setting
7.4.6
Output Current Limit and Output Short Circuit Protection
7.4.7
Thermal Protection
7.5
Device Functional Modes
7.5.1
PWM Mode Operation
7.5.2
PSM 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
Input Capacitor (CIN)
8.2.2.2
Output Capacitor (COUT)
8.2.2.3
Softstart Capacitor (CSS)
8.2.2.4
Power Good Resistor (RPG)
8.2.2.5
Feedback Resistors (RFBB and RFBT)
8.2.3
Application Curves
8.2.3.1
VOUT = 1.2 V
8.2.3.2
VOUT = 1.8 V
8.2.3.3
VOUT = 2.5 V
8.2.3.4
VOUT = 3.3 V
8.2.3.5
VOUT = 5.0 V
8.3
Do's and Don'ts
9
Power Supply Recommendations
9.1
Voltage Range
9.2
Current Capability
9.3
Input Connection
9.3.1
Voltage Drops
9.3.2
Stability
10
Layout
10.1
Layout Guidelines
10.1.1
Minimize the High di/dt Loop Area
10.1.2
Protect the Sensitive Nodes in the Circuit
10.1.3
Provide Thermal Path and Shielding
10.2
Layout Example
10.2.1
High Density Layout Example for Space Constrained Applications
10.2.1.1
35 mm² Solution Size (Single Sided)
11
器件和文档支持
11.1
器件支持
11.2
开发支持
11.2.1
使用 WEBENCH® 工具创建定制设计
11.3
接收文档更新通知
11.4
社区资源
11.5
商标
11.6
静电放电警告
11.7
术语表
12
机械、封装和可订购信息
12.1
Tape and Reel Information
重要声明
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
SIL|8
散热焊盘机械数据 (封装 | 引脚)
订购信息
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