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LM2105 107-V, 0.5-A, 0.8-A Half-Bridge Driver with 5-V UVLO and Integrated Bootstrap Diode
SNVSCB0C
January 2023 – September 2023
LM2105
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CONTENTS
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LM2105 107-V, 0.5-A, 0.8-A Half-Bridge Driver with 5-V UVLO and Integrated Bootstrap Diode
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Switching Characteristics
6.7
Timing Diagrams
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Start-Up and UVLO
7.3.2
Input Stages
7.3.3
Level Shift
7.3.4
Output Stages
7.3.5
SH Transient Voltages Below Ground
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Select Bootstrap and GVDD Capacitor
8.2.2.2
Select External Gate Driver Resistor
8.2.2.3
Estimate the Driver Power Loss
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
Device Support
11.1.1
Third-Party Products Disclaimer
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
DSG|8
MPDS308C
Thermal pad, mechanical data (Package|Pins)
DSG|8
QFND141I
Orderable Information
snvscb0c_oa
snvscb0c_pm
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Data Sheet
LM2105 107-V, 0.5-A, 0.8-A Half-Bridge Driver with
5-V UVLO and Integrated Bootstrap Diode
1
Features
Drives two N-channel MOSFETs in half-bridge configuration
Integrated bootstrap diode
5-V
typical undervoltage lockout on GVDD
107-V absolute maximum voltage on BST
–19.5-V absolute maximum negative transient voltage handling on SH
0.5-A/0.8-A peak source/sink currents
115-ns typical propagation delay
2
Applications
Brushless-DC (BLDC) motors
Permanent magnet synchronous motors (PMSM)
Cordless vacuum cleaners
Cordless garden and power tools
E-bikes and e-scooters
Battery test equipment
Offline uninterruptible power supply (UPS)
General-purpose MOSFET or IGBT driver