SGM37604S数据手册SGMICRO中文资料规格书

描述 Description

The SGM37604S is a high efficiency 4-string white LED driver with an integrated 1.2MHz Boost converter. The SGM37604S operates from 3V to 5.5V input range, and is capable of driving up to 9 LEDs in series for 25mA maximum LED current per string while achieving high conversion efficiency. An adaptively current-regulated method allows different LED string voltages while LED current remains in regulation. The LED current is programmed through an I2 C interface or a PWM signal input. These features make it optimized for compact solutions and ideal for LCD display backlighting. 
The SGM37604S is available in a Green WLCSP-1.35×1.7-12B package. It operates over the -40℃ to +85℃ temperature range.

特性 Features

• 2% Matched Current Sinks across Process, Voltage and Temperature
• 0.5% Current Sink Accuracy across Process, Voltage and Temperature
• 12-Bit Resolution for Dimming Control
• Up to 91% Boost Efficiency
• Support 1 to 4 LED Strings in Parallel at Maximum 29.5V Output
• PWM Dimming Interface
• Programmable I2C Interface
• Phase Shift Function
• Hybrid PWM + Current Dimming for Higher LED Driver Optical Efficiency
• 1.2MHz Switching Frequency
• Low EMI by Conducting Ringing Cancelling
• Protection Features
Over-Voltage Protection
Over-Current Protection
Thermal Shutdown

应用 Application

Power Source for Smart Phone and Tablet Backlighting