Introduction
This document serves as the User's Guide for the Texas Instruments LM3565 Evaluation Module (EVM). The LM3565EVM is designed to help engineers evaluate the performance and functionality of the LM3565, a 4MHz High-Current LED driver. The module supports I²C-compatible interface for configuration and can be enabled in Flash or Torch modes, either via the I²C interface or external strobe and torch pins. It features two onboard LEDs (D1 & D2) and incorporates a Synchronous Boost LED Flash Driver.
Setup and Configuration
The setup section details the jumpers and connectors on the LM3565EVM. It guides users through connecting, configuring, and operating the evaluation module. Key components discussed include:
- Input/Output Connectors: VIN, GND for power input, and HWEN for enabling the LED driver.
- VIO Pin: Provides power for I²C lines and the HWEN pin, with recommendations for connection to VIN or a 3.3V line.
- Jumper Settings: Configuration options for LEDs (J5), STROBE (via PWM0), TORCH (via PWM1), and TX (via PWM2) pins, allowing external control and mode selection.
- I²C Interface: SDA/SCL connections for external I²C control.
- Output Access: VOUT/VLED pins for measuring regulated output and LED current source.
The recommended input voltage range for the driver is 2.7V to 5.5V. Proper jumper configuration is essential for operation, with specific settings outlined for VIO, HWEN, STROBE, TORCH, TX, and LEDs.
Operation and Interface
The LM3565EVM facilitates evaluation through various operational modes and an I²C-compatible interface. The document describes the board layout, schematic, and bill of materials for the EVM.
An integrated USB interface board and I²C-compatible interface program are provided to simplify the evaluation process. This software allows users to control the LM3565, configure registers, and monitor performance. Key interface features include:
- General User Interface: A graphical interface for controlling the LM3565, including I²C settings, output modes (Flash, Assist, OFF), and register configurations.
- Register Settings: Detailed explanations for configuring registers such as Current Set (0x02), TX Mask (0x03), Low-Voltage (0x04), Flash Duration (0x05), Strobe (0x06), Output Mode (0x07), Fault (0x08), and ADC (0x09).
- I²C Communication: The interface enables writing to and reading from LM3565 registers via I²C.
The guide also includes important regulatory compliance information and warnings regarding the use of evaluation boards.
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