ZHCSMP1
December 2021
DRV8251
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison
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
7.7
Timing Diagrams
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
External Components
8.4
Feature Description
8.4.1
Bridge Control
8.4.2
Current Regulation
8.4.3
Protection Circuits
8.4.3.1
Overcurrent Protection (OCP)
8.4.3.2
Thermal Shutdown (TSD)
8.4.3.3
VM Undervoltage Lockout (UVLO)
8.5
Device Functional Modes
8.5.1
Active Mode
8.5.2
Low-Power Sleep Mode
8.5.3
Fault Mode
8.6
Pin Diagrams
8.6.1
Logic-Level Inputs
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Brush DC Motor
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Motor Voltage
9.2.1.2.2
Motor Current
9.2.1.2.3
Sense Resistor
9.2.1.3
Application Curves
9.2.2
Stall Detection
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.2.1
Stall Detection Timing
9.2.2.2.2
Stall Threshold Selection
9.2.2.3
Application Curves
9.2.3
Relay Driving
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.3.2.1
Control Interface for Single-Coil Relays
9.2.3.2.2
Control Interface for Dual-Coil Relays
9.2.3.3
Application Curves
9.2.4
Multi-Sourcing with Standard Motor Driver Pinout
9.3
Current Capability and Thermal Performance
9.3.1
Power Dissipation and Output Current Capability
9.3.2
Thermal Performance
9.3.2.1
Steady-State Thermal Performance
9.3.2.2
Transient Thermal Performance
10
Power Supply Recommendations
10.1
Bulk Capacitance
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Community Resources
12.4
Trademarks
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DDA|8
MPDS092F
散热焊盘机械数据 (封装 | 引脚)
DDA|8
PPTD058I
订购信息
zhcsmp1_oa
12.1.1
Related Documentation
For related documentation, see the following:
Texas Instruments,
Calculating Motor Driver Power Dissipation
application report
Texas Instruments,
Current Recirculation and Decay Modes
application report
Texas Instruments,
PowerPAD™ Made Easy
application report
Texas Instruments,
PowerPAD™ Thermally Enhanced Package
application report
Texas Instruments,
Understanding Motor Driver Current Ratings
application report
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