ZHCSPG3A
May 2008 – July 2022
UC2843A-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
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
Electrical Characteristics
6.5
Thermal Information
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Pulse-by-Pulse Current Limiting
7.3.2
Current Sense Circuit
7.3.3
Error Amplifier Configuration
7.3.4
Undervoltage Lockout
7.3.5
Oscillator
7.4
Device Functional Modes
7.4.1
Normal Operation
7.4.2
Undervoltage Lockout (UVLO) Start-Up
7.4.3
UVLO Turnoff Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.1.2
Device Nomenclature
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Related Links
11.4
接收文档更新通知
11.5
支持资源
11.6
Trademarks
11.7
Electrostatic Discharge Caution
11.8
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
D|8
MSOI002K
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcspg3a_oa
zhcspg3a_pm
1
特性
符合汽车应用要求
工作温度范围为 –40°C 至 125°C
针对离线和直流/直流转换器进行了优化
低启动电流 (<0.5mA)
经修整的振荡器放电电流
自动前馈补偿
逐脉冲电流限制
增强型负载响应特性
带有迟滞功能的欠压锁定
双脉冲抑制
高电流图腾柱输出
内部调整的带隙参考
500kHz 工作频率
低 R
O
误差放大器
使用 UC2843A-Q1 并借助
WEBENCH®
Power Designer
创建定制设计方案