ZHCSO68
March 2022
TPS629203
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
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Mode Selection and Device Configuration (MODE/S-CONF Pin)
8.3.2
Adjustable VO Operation (External Voltage Divider)
8.3.3
Selectable VO Operation (VSET and Internal Voltage Divider)
8.3.4
Smart Enable with Precise Threshold
8.3.5
Power Good (PG)
8.3.6
Output Discharge Function
8.3.7
Undervoltage Lockout (UVLO)
8.3.8
Current Limit and Short Circuit Protection
8.3.9
Thermal Shutdown
8.4
Device Functional Modes
8.4.1
Forced Pulse Width Modulation (PWM) Operation
8.4.2
Power Save Mode Operation (Auto PFM/PWM)
8.4.3
AEE (Automatic Efficiency Enhancement)
8.4.4
100% Duty-Cycle Operation
8.4.5
Starting into a Prebiased Load
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Custom Design With WEBENCH® Tools
9.2.2.2
Programming the Output Voltage
9.2.2.3
External Component Selection
9.2.2.3.1
Output Filter and Loop Stability
9.2.2.3.2
Inductor Selection
9.2.2.3.3
Capacitor Selection
9.2.2.3.3.1
Output Capacitor
9.2.2.3.3.2
Input Capacitor
9.2.3
Application Curves
9.3
System Examples
9.3.1
Powering Multiple Loads
9.3.2
Inverting Buck-Boost (IBB)
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
11.2.1
Thermal Considerations
12
Device and Documentation Support
12.1
Device Support
12.1.1
第三方产品免责声明
12.1.2
Development Support
12.1.2.1
Custom Design With WEBENCH® Tools
12.2
Documentation Support
12.2.1
Related Documentation
12.3
接收文档更新通知
12.4
支持资源
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
术语表
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DRL|8
MPCS002D
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcso68_oa
7.6
Typical Characteristics
Measured with the device not switching
Figure 7-1
Typical Quiescent Current vs Temperature
Figure 7-3
Output Voltage Accuracy – External Feedback
V
OUT
= 3.3 V
Figure 7-5
Output Voltage Accuracy – VSET Selected
V
OUT
= 1.2 V
Figure 7-7
Output Voltage Accuracy – VSET Selected
V
OUT
= 1.2 V
F
SW
= 2.5 MHz
I
OUT
= 0 A
FPWM
Figure 7-9
Switching Frequency vs Temperature
Figure 7-11
High-Side RDS
ON
vs Temperature
Figure 7-13
High-Side I
LIM
vs Temperature
Figure 7-15
Low-Side I
NEG
vs Temperature
Figure 7-17
Precision Enable Threshold vs Temperature
Figure 7-2
Typical Shutdown Current vs Temperature
V
OUT
= 5.0 V
Figure 7-4
Output Voltage Accuracy – VSET Selected
V
OUT
= 1.8 V
Figure 7-6
Output Voltage Accuracy – VSET Selected
V
OUT
= 0.6 V
Figure 7-8
Output Voltage Accuracy – VSET Selected
V
OUT
= 1.2 V
F
sw
= 1.0 MHz
I
OUT
= 0 A
FPWM
Figure 7-10
Switching Frequency vs Temperature
Figure 7-12
Low-Side RDS
ON
vs Temperature
Figure 7-14
Low-Side I
LIM
vs Temperature
Figure 7-16
V
IN
UVLO Thresholds vs Temperature
Figure 7-18
Precision Enable Threshold vs Temperature