ZHCSLS3B
January 2022 – September 2023
TPS62843
PRODMIX
1
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
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Smart Enable and Shutdown (EN)
8.3.2
Soft Start
8.3.3
VSET Pin: Output Voltage Selection
8.3.4
Undervoltage Lockout (UVLO)
8.3.5
Switch Current Limit, Short-Circuit Protection
8.3.6
Thermal Shutdown
8.3.7
Output Voltage Discharge
8.4
Device Functional Modes
8.4.1
Power Save Mode Operation
8.4.2
100% Mode Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
第三方产品免责声明
10.2
接收文档更新通知
10.3
支持资源
10.4
Trademarks
10.5
静电放电警告
10.6
术语表
11
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
YKA|6
MXBG383A
DRL|6
MPDS159F
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsls3b_oa
zhcsls3b_pm
9.2.3
Application Curves
Figure 9-2
Efficiency at 0.4 V
OUT
Figure 9-4
Efficiency at 1.2 V
OUT
Figure 9-6
Efficiency at 3.3 V
OUT
Figure 9-8
Output Voltage vs Output Current at 0.7 V
OUT
Figure 9-10
Switching Frequency vs Output Current at 0.7 V
OUT
Figure 9-12
Switching Frequency vs Output Current at 1.8 V
OUT
Figure 9-14
Typical Operation at 0.7 V
OUT
, 100 μA I
OUT
Figure 9-16
Typical Operation at 0.7 V
OUT
, 400 mA I
OUT
Figure 9-18
Load Transient at 0.7 V
OUT
, I
OUT
= 100 μA to 400 mA
Figure 9-20
Load Transient at 1.2 V
OUT
, I
OUT
= 100 μA to 20 mA
Figure 9-22
Load Transient at 1.2 V
OUT
, I
OUT
= 5 mA to 400 mA
Figure 9-24
AC Load Sweep at 1.2 V
OUT
, I
OUT
= 1 mA to 600 mA
Figure 9-26
Line Transient at 1.2 V
OUT
, I
OUT
= 400 mA, V
IN
= 3.6 V to 4.2 V
Figure 9-28
Start-Up Delay Time, VSET = GND
Figure 9-3
Efficiency at 0.7 V
OUT
Figure 9-5
Efficiency at 1.8 V
OUT
Figure 9-7
Output Voltage vs Output Current at 1.2 V
OUT
Figure 9-9
Switching Frequency vs Output Current at 0.4 V
OUT
Figure 9-11
Switching Frequency vs Output Current at 1.2 V
OUT
Figure 9-13
Power Supply Rejection Ratio (PSRR) at 1.8 V
OUT
Figure 9-15
Typical Operation at 0.7 V
OUT
, 20 mA I
OUT
Figure 9-17
Load Transient at 0.7 V
OUT
, I
OUT
= 100 μA to 20 mA
Figure 9-19
Load Transient at 0.7 V
OUT
, I
OUT
= 5 mA to 400 mA
Figure 9-21
Load Transient at 1.2 V
OUT
, I
OUT
= 100 μA to 400 mA
Figure 9-23
AC Load Sweep at 0.7 V
OUT
, I
OUT
= 1 mA to 600 mA
Figure 9-25
Line Transient at 0.7 V
OUT
, I
OUT
= 400 mA, V
IN
= 3.6 V to 4.2 V
Figure 9-27
Shutdown, Output Discharge at 0.7 V
OUT
Figure 9-29
Start-Up Delay Time, VSET = 10 kohms