SNOSB29H
November 2009 – May 2022
LMP8645
,
LMP8645HV
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
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
2.7-V Electrical Characteristics
6.6
5-V Electrical Characteristics
6.7
12-V Electrical Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.1.1
Theory of Operation
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Driving ADC
7.3.2
Applying Input Voltage With No Supply Voltage
7.4
Device Functional Modes
7.4.1
Selection of the Gain Resistor
7.4.2
Gain Range Limitations
7.4.2.1
Range 1: VCM is –2 V to 1.8 V
7.4.2.2
Range 2: VCM is 1.8 V to VS
7.4.2.3
Range 3: VCM is greater than VS
7.4.3
Selection of Sense Resistor
7.4.3.1
Resistor Power Rating and Thermal Issues
7.4.3.2
Using PCB Trace as a Sense Resistor
7.4.4
Sense Line Inputs
7.4.4.1
Effects of Series Resistance on Sense Lines
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Current Monitor Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.2.2
High Brightness LED Driver
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
Development Support
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
Package Options
Mechanical Data (Package|Pins)
DDC|6
MPDS124I
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snosb29h_oa
snosb29h_pm
11.7
Glossary
TI Glossary
This glossary lists and explains terms, acronyms, and definitions.