SLUS670C
JULY 2005 – January 2015
TPS51120
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
Recommended Operating Conditions
6.3
Thermal Information
6.4
Electrical Characteristics
6.5
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
PWM Operation
7.3.2
Adaptive On-Time Control
7.3.3
Light Load Operation
7.3.4
Forced PWM Operation
7.3.5
5-V, 100-mA, LDO and Switchover (VREG5)
7.3.6
3.3-V, 100-mA, LDO and Switchover (VREG3)
7.3.7
2-V, 50-uA Sink - Source Reference (VREF2)
7.3.8
Low-Side Driver
7.3.9
High-Side Driver
7.3.10
Soft-Start
7.3.11
Soft-Stop
7.3.12
Powergood
7.3.13
Current Sensing and Overcurrent Protection
7.3.14
Overvoltage Protection
7.3.15
Undervoltage Protection
7.3.16
5-V Supply and UVLO Protection
7.3.17
VIN Line Sag Protection (Dynamic UVP)
7.3.18
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Current Mode
7.4.1.1
Current Mode Operation
7.4.2
D-Cap Mode
7.4.2.1
D-Cap Mode Operation
7.5
Programming
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Trademarks
11.2
Electrostatic Discharge Caution
11.3
Glossary
12
Mechanical, Packaging, and Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
RHB|32
散热焊盘机械数据 (封装 | 引脚)
RHB|32
QFND029X
订购信息
slus670c_oa
slus670c_pm
9 Power Supply Recommendations
The TPS51120 is designed to operate from input supply voltage in the range of 4.5 V to 28 V. Make sure power supply voltage in this range.