LM3643YFFR - Texas Instruments

Manufacturer Part Number

LM3643YFFR

Manufacturer

Texas Instruments

Introduction

The LM3643YFFR is a highly integrated LED driver designed for powering camera flash systems in portable devices, utilizing a DC DC regulator with a step-up (boost) topology.

Product Features and Performance

Equipped with an internal switch

Features boost topology for efficient power conversion

Provides two outputs for dual LED flash

Supports up to 750mA current output per channel

High-frequency operation at 2MHz and 4MHz

I2C interface for dimming control

Product Advantages

High integration for compact system design

Enhanced power efficiency for prolonged battery life

Flexible dimming options improve user control over light intensity

Supports a broad range of input voltages from 2.5V to 5.5V

Key Technical Parameters

Type: DC DC Regulator

Voltage Supply (Min): 2.5V

Voltage Supply (Max): 5.5V

Current Output / Channel: 750mA

Frequency: 2MHz, 4MHz

Dimming: I2C

Quality and Safety Features

Operates across a wide temperature range of -40°C to 85°C ensuring reliability under various environmental conditions

Compatibility

Designed for surface mount applications

Suitable for a wide range of input voltages, enhancing compatibility with different battery technologies

Application Areas

Primarily used for camera flash applications in mobile phones, tablets, and other portable devices

Product Lifecycle

Currently in an active production status

Not nearing discontinuation, and replacements or upgrades are readily available as needed

Several Key Reasons to Choose This Product

Efficient power management enhances battery life in portable devices

Dual output capability allows for versatile flash configurations

User configurable I2C dimming provides precise control over lighting effects

Reliable performance over a wide operational temperature and input voltage range

Compact package size (12-DSBGA) ideal for space-constrained applications