SNVS541H
October 2007 – August 2016
LM3410
,
LM3410-Q1
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
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Current Limit
7.3.2
DIM Pin and Shutdown Mode
7.4
Device Functional Modes
7.4.1
Thermal Shutdown
8
Application and Implementation
8.1
Application Information
8.1.1
Boost Converter
8.1.1.1
Setting the LED Current
8.1.1.2
LED-Drive Capability
8.1.1.3
Inductor Selection
8.1.1.4
Input Capacitor
8.1.1.5
Output Capacitor
8.1.1.6
Diode
8.1.1.7
Output Overvoltage Protection
8.1.2
SEPIC Converter
8.1.2.1
SEPIC Equations
8.1.2.2
Steady State Analysis with Loss Elements
8.1.2.2.1
Details
8.2
Typical Applications
8.2.1
Low Input Voltage, 1.6-MHz, 3 to 5 White LED Output at 50-mA Boost Converter
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Set the LED Current (R1)
8.2.1.2.2
Calculate Maximum Duty Cycle (DMAX)
8.2.1.2.3
Calculate the Inductor Value (L1)
8.2.1.2.4
Calculate the Output Capacitor (C2)
8.2.1.2.5
Input Capacitor (C1) and Schottky Diode (D1)
8.2.1.3
Application Curves
8.2.2
LM3410X SOT-23: 5 × 1206 Series LED String Application
8.2.2.1
Design Requirements
8.2.3
LM3410Y SOT-23: 5 × 1206 Series LED String Application
8.2.3.1
Design Requirements
8.2.4
LM3410X WSON: 7 × 5 LED Strings Backlighting Application
8.2.4.1
Design Requirements
8.2.5
LM3410X WSON: 3 × HB LED String Application
8.2.5.1
Design Requirements
8.2.6
LM3410Y SOT-23: 5 × 1206 Series LED String Application With OVP
8.2.6.1
Design Requirements
8.2.7
LM3410X SEPIC WSON: HB or OLED Illumination Application
8.2.7.1
Design Requirements
8.2.8
LM3410X WSON: Boost Flash Application
8.2.8.1
Design Requirements
8.2.9
LM3410X SOT-23: 5 × 1206 Series LED String Application With VIN > 5.5 V
8.2.9.1
Design Requirements
8.2.10
LM3410X WSON: Camera Flash or Strobe Circuit Application
8.2.10.1
Design Requirements
8.2.11
LM3410X SOT-23: 5 × 1206 Series LED String Application With VIN and VPWR Rail > 5.5 V
8.2.11.1
Design Requirements
8.2.12
LM3410X WSON: Boot-Strap Circuit to Extend Battery Life
8.2.12.1
Design Requirements
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Examples
10.3
Thermal Considerations
10.3.1
Design
10.3.2
LM3410 and LM3410-Q1 Thermal Models
10.3.3
Calculating Efficiency and Junction Temperature
10.3.3.1
Quiescent Power Losses
10.3.3.2
RSET Power Losses
10.3.4
Example Efficiency Calculation
10.3.5
Calculating RθJA and RΨJC
11
Device and Documentation Support
11.1
Device Support
11.1.1
Device Nomenclature
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Related Links
11.4
Receiving Notification of Documentation Updates
11.5
Community Resources
11.6
Trademarks
11.7
Electrostatic Discharge Caution
11.8
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
NGG|6
MPDS395
DGN|8
MPDS046G
DBV|5
MPDS018T
Thermal pad, mechanical data (Package|Pins)
DGN|8
PPTD274A
Orderable Information
snvs541h_oa
snvs541h_pm