ZHCSEP1D
January 2016 – May 2021
TPS61194
PRODUCTION DATA
1
特性
2
应用
3
说明
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 (1) (1)
6.6
Internal LDO Electrical Characteristics
6.7
Protection Electrical Characteristics
6.8
Current Sinks Electrical Characteristics
6.9
PWM Brightness Control Electrical Characteristics
6.10
Boost and SEPIC Converter Characteristics
6.11
Logic Interface Characteristics
6.12
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Integrated DC-DC Converter
7.3.2
Internal LDO
7.3.3
LED Current Sinks
7.3.3.1
Output Configuration
7.3.3.2
Current Setting
7.3.3.3
Brightness Control
7.3.4
Protection and Fault Detections
7.3.4.1
Adaptive DC-DC Voltage Control and Functionality of LED Fault Comparators
7.3.4.2
Overview of the Fault/Protection Schemes
7.4
Device Functional Modes
7.4.1
Device States
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Application for 4 LED Strings
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Inductor Selection
8.2.1.2.2
Output Capacitor Selection
8.2.1.2.3
Input Capacitor Selection
8.2.1.2.4
LDO Output Capacitor
8.2.1.2.5
Diode
8.2.1.3
Application Curves
8.2.2
SEPIC Mode Application
8.2.2.1
Design Requirements
8.2.2.2
Detailed Design Procedure
8.2.2.2.1
Inductor
8.2.2.2.2
Diode
8.2.2.2.3
Capacitor C1
8.2.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Documentation Support
11.2.1
Related Documentation
11.3
接收文档更新通知
11.4
支持资源
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
PWP|20
MHTS001G
散热焊盘机械数据 (封装 | 引脚)
PWP|20
PPTD027Z
订购信息
zhcsep1d_oa
zhcsep1d_pm
1
特性
输入电压工作范围:4.5V 至 40V
四路高精度电流阱
电流匹配度为 1%(典型值)
LED 灯串电流高达 100mA/通道
可以在外部组合输出,以便为每个灯串提供更高的电流
在 100Hz 时具有 10000:1 的高调光比
用于 LED 灯串电源的集成升压/SEPIC 转换器
输出电压高达 45V
开关频率为 300kHz 至 2.2MHz
开关同步输入
展频,可实现更低的 EMI
丰富的故障检测功能
故障输出
输入电压 OVP 和 UVLO
开路和短路 LED 故障检测
热关断
极少的外部元件数量