ZHCSQS5F
April 2006 – January 2024
TPS5420
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
静电放电警告
5
Ordering Information
6
Pin Assignments
6.1
Terminal Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Application Information
8.1
Functional Block Diagram
8.2
Detailed Description
8.2.1
Oscillator Frequency
8.2.2
Voltage Reference
8.2.3
Enable (ENA) and Internal Slow Start
8.2.4
Undervoltage Lockout (UVLO)
8.2.5
Boost Capacitor (BOOT)
8.2.6
Output Feedback (VSENSE)
8.2.7
Internal Compensation
8.2.8
Voltage Feed Forward
8.2.9
Pulse-Width-Modulation (PWM) Control
8.2.10
Overcurrent Limiting
8.2.11
Overvoltage Protection
8.2.12
Thermal Shutdown
8.2.13
PCB Layout
8.2.14
Application Circuits
8.2.15
Design Procedure
8.2.15.1
Design Parameters
8.2.15.2
Switching Frequency
8.2.15.3
Input Capacitors
8.2.15.4
Output Filter Components
8.2.15.4.1
Inductor Selection
8.2.15.4.2
Capacitor Selection
40
41
8.2.15.5
Output Voltage Setpoint
8.2.15.6
Boot Capacitor
8.2.15.7
Catch Diode
8.2.15.8
Additional Circuits
8.2.15.9
Circuit Using Ceramic Output Filter Capacitors
8.2.15.10
Output Filter Component Selection
8.2.15.11
External Compensation Network
8.3
Advanced Information
8.3.1
Output Voltage Limitations
8.3.2
Internal Compensation Network
8.3.3
Thermal Calculations
8.4
Performance Graphs
9
Revision History
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
zhcsqs5f_oa
zhcsqs5f_pm
1
特性
宽泛的输入电压:5.5V 至 36V
高达 2A 的连续(3A 峰值)输出电流
通过 110mΩ 集成式 MOSFET 开关实现高达 95% 的高效率
宽输出电压范围:可调节为低至 1.22V,初始精度为 1.5%
内部补偿可最大限度减少外部器件数量
适用于小型滤波器尺寸的固定 500kHz 开关频率
通过输入电压前馈改进线路稳压和瞬态响应
系统受过流限制、过压保护和热关断的保护
-40°C 至 125°C 的工作结温范围
采用小型 8 引脚 SOIC 封装