帕智電子(上海)有限公司

                400 0800 882

                產品中心

                當前位置:首頁 > 產品中心 > 圣邦微 > LED驅動器 > LED閃關燈驅動器 > SGM3784

                產品中心

                SGM3784

                Dual 1.1A LED Flash Driver with I2C-Compatible Interface
                 
                Dual 1.1A LED Flash Driver with I2C-Compatible Interface
                GENERAL DESCRIPTION

                The SGM3784 is a very compact, highly efficient, dual white LED flash driver for high resolution camera phones that improves picture and video quality in low light environments. The device integrates a programmable 1.6MHz or 3MHz synchronous inductive boost converter, an I2C-compatible interface, and two 1.1A current sources. The high switching frequency enables the use of a tiny, 1mm high, low cost, 1μH power inductor, and the parallel current sources permit LED cathode grounding for thermally enhanced, low EMI and compact layouts.

                The LED driver maximizes efficiency over the entire battery voltage range to maximize the input-power-to-LED-power conversion and minimize battery current draw during flash events.

                A programmable DC battery current limit safely maximizes LED current for all LED forward voltage and battery voltage conditions.

                A Transmitter Mask (TxMASK) input enables fast reduction of the flash LED currents and battery current during a power amplifier current burst. The I2C-compatible interface can be used to program timers and currents and to read back status bits for operation monitoring and safety control.

                The SGM3784 is available in WLCSP-2×1.6-12B package and operates within specification over the full -40 to +85 operating temperature range.

                PIN CONFIGURATIONS

                Snap1.png

                FEATURES
                • Ultra Compact Solution

                    Small, WLCSP-2×1.6-12B Package

                    Smallest Footprint, 1mm-Height, 1μH Power Inductor

                • LED Current Source for Local LED Grounding

                    Simplified Routing to and from LEDs

                    Improved LED Thermal Dissipation

                • Synchronous 3MHz PWM Boost Converter, No External Diode

                • High Efficiency: 95% Peak

                • I2C Programmable

                    Currents up to 1.1A in Flash Mode per LED When VIN is not Lower than 3.6V (The Total 2  LEDs Current is 1.5A When VIN is Lower than 3.6V)

                    Torch Mode

                    Programmable DC Battery Current Limit

                    Programmable Flash Timer up to 1600ms

                    Low Battery Mode to Reduce LED Current Automatically

                • Device Control

                    I2C-Compatible Control Registers

                    External STROBE and Torch Input Pins

                    Transmitter Mask (TxMASK) Input

                • Safety Features

                    Thermal Overload Protection

                    Inductor Fault Detection

                    LED Short-Circuit/Open-Circuit Protection

                APPLICATIONS

                Camera-Enabled Cellular Phones and Smart-Phones

                Digital Still Cameras, Camcorders and PDAs

                ORDERING INFORMATION
                Part NumberStatusPackagePinsPb-FreeTemp Range
                SGM3784YG/TRProductionWLCSP-2×1.6-12B12Y-40℃ to +85℃Samples

                网上赚钱最可靠的10种方法