ZHCSPB1B
November 2021 – July 2022
TPS62441-Q1
,
TPS62442-Q1
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Table
6
Pin Configuration and 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
Timing Requirements
7.7
Typical Characteristics
8
Parameter Measurement Information
8.1
Schematic
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Precise Enable (EN)
9.3.2
COMP/FSET
9.3.3
MODE/SYNC
9.3.4
Spread Spectrum Clocking (SSC)
9.3.5
Undervoltage Lockout (UVLO)
9.3.6
Power-Good Output (PG)
9.3.7
Thermal Shutdown
9.4
Device Functional Modes
9.4.1
Pulse Width Modulation (PWM) Operation
9.4.2
Power Save Mode Operation (PWM and PFM)
9.4.3
100% Duty-Cycle Operation
9.4.4
Current Limit and Short Circuit Protection
9.4.5
Foldback Current Limit and Short Circuit Protection
9.4.6
Output Discharge
9.4.7
Soft Start
10
Application and Implementation
10.1
Application Information
10.1.1
Programming the Output Voltage
10.1.2
External Component Selection
10.1.2.1
Inductor Selection
10.1.2.2
Capacitor Selection
10.1.2.2.1
Input Capacitor
10.1.2.2.2
Output Capacitor
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方产品免责声明
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
Electrostatic Discharge Caution
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RQR|14
MPQF624
散热焊盘机械数据 (封装 | 引脚)
RQR|14
QFND745
订购信息
zhcspb1b_oa
zhcspb1b_pm
1
特性
符合面向汽车应用的 AEC-Q100 标准
器件温度等级 1:
–40°C 至 +125°C T
A
提供功能安全型
可帮助进行功能安全系统设计的文档
输入电压范围:2.75V 至 6V
双通道输出,输出电压范围为 0.6V 至 5.5V
输出电压精度为 ±1%(PWM 操作)
强制 PWM 或 PWM 和 PFM 操作
可调开关频率为
1.8MHz 至 4MHz
两个精密使能输入可实现:
用户定义的欠压锁定
准确排序
具有窗口比较器的两个电源正常输出
180° 相移运行
100% 占空比模式
有源输出放电
可选展频时钟
可选折返过流保护
T
J
= -40°C 至 +150°C
具有可湿性侧面的 2.3mm × 2.7mm QFN 封装