SGM37604A_圣邦微代理商_深圳瑞天微科技有限公司

产品详情

GENERAL DESCRIPTION

The SGM37604A is a high efficiency 4-string white LED driver with a 1.2MHz boost converter. The supply voltage operates from 3V to 24V. The SGM37604A is capable of driving up to 8 LEDs in series for 40mA 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 I²C interface or a PWM signal input. These features make it optimized for compact solutions and ideal for LCD display backlighting.

The SGM37604A is available in Green WLCSP-1.78×1.36-12B and TDFN-3×3-12L packages. It operates over the -40℃ to +85℃ temperature range.

PIN CONFIGURATIONS

FEATURES

12-Bit Resolution for Dimming Control
Up to 90% Boost Efficiency
Switching Frequency: 1.2MHz
Support 1 to 4 LED Strings in Parallel at Maximum 29.5V Output
11% LED Current Matching across Process, Voltage and Temperature at ILED = 12.21μA
1% LED Current Matching across Process, Voltage and Temperature at ILED = 25mA
11% LED Current Accuracy across Process, Voltage and Temperature at ILED = 12.21μA
3% LED Current Accuracy across Process, Voltage and Temperature at ILED = 25mA
PWM Dimming Interface
Programmable I²C Interface
Phase Shift Function
Hybrid PWM + Current Dimming for Higher LED Driver Optical Efficiency
Low EMI by Conducting Ringing Cancelling
Protection Features
Over-Voltage Protection
Over-Current Protection
Thermal Shutdown

APPLICATIONS

Power Source for Smart Phone and Tablet Backlighting

ORDERING INFORMATION

Part Number	Status	Package	Pins	Pb-Free	Temp Range
SGM37604AYG/TR	Production	WLCSP-1.78×1.36-12B	12	Y	-40℃ to +85℃
SGM37604AYTDF12G/TR	Production	TDFN-3×3-12L	12	Y	-40℃ to +85℃

白光LED驱动器

SGM37604A

应用领域