ZHCSCQ7A
August 2014 – November 2014
LM3643
PRODUCTION DATA.
1
特性
2
应用
3
说明
4
修订历史记录
5
Device Comparison Table
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
Timing Requirements
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Flash Mode
8.3.2
Torch Mode
8.3.3
IR Mode
8.4
Device Functioning Modes
8.4.1
Start-Up (Enabling The Device)
8.4.2
Pass Mode
8.4.3
Power Amplifier Synchronization (TX)
8.4.4
Input Voltage Flash Monitor (IVFM)
8.4.5
Fault/Protections
8.4.5.1
Fault Operation
8.4.5.2
Flash Time-Out
8.4.5.3
Overvoltage Protection (OVP)
8.4.5.4
Current Limit
8.4.5.5
NTC Thermistor Input (Torch/Temp)
8.4.5.6
Undervoltage Lockout (UVLO)
8.4.5.7
Thermal Shutdown (TSD)
8.4.5.8
LED and/or VOUT Short Fault
8.5
Programming
8.5.1
Control Truth Table
8.5.2
I2C-Compatible Interface
8.5.2.1
Data Validity
8.5.2.2
Start and Stop Conditions
8.5.2.3
Transferring Data
8.5.2.4
I2C-Compatible Chip Address
8.6
Register Descriptions
8.6.1
Enable Register (0x01)
8.6.2
IVFM Register (0x02)
8.6.3
LED1 Flash Brightness Register (0x03)
8.6.4
LED2 Flash Brightness Register (0x04)
8.6.5
LED1 Torch Brightness Register (0x05)
8.6.6
LED2 Torch Brightness Register (0x06)
8.6.7
Boost Configuration Register (0x07)
8.6.8
Timing Configuration Register (0x08)
8.6.9
TEMP Register (0x09)
8.6.10
Flags1 Register (0x0A)
8.6.11
Flags2 Register (0x0B)
8.6.12
Device ID Register (0x0C)
8.6.13
Last Flash Register (0x0D)
9
Applications and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Output Capacitor Selection
9.2.2.2
Input Capacitor Selection
9.2.2.3
Inductor Selection
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
器件支持
12.1.1
Third-Party Products Disclaimer
12.2
相关文档
12.2.1
相关链接
12.3
商标
12.4
静电放电警告
12.5
术语表
13
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
YFF|12
MXBG343
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcscq7a_oa
zhcscq7a_pm
5 Device Comparison Table
ORDERING PART NUMBER
I
2
C ADDRESS
LM3643YFFR
0x63
LM3643AYFFR
0x67