Highly Efficient 3-String White LED Driver
The SGM37603 is a high efficiency 3-string white LED driver with a 1.2MHz boost converter. The supply voltage operates from 3V to 24V. The SGM37603 is capable of driving up to 8 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 I2C interface or a PWM signal input. These features make it optimized for compact solutions and ideal for LCD display backlighting.
The SGM37603 is available in Green WLCSP-1.78×1.36-12B and TDFN-3×3-12L packages. It operates over an ambient temperature range of -40℃ to +85℃.
11-Bit Resolution for Dimming Control
Up to 90% Boost Efficiency
Switching Frequency: 1.2MHz
Support 1 to 3 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
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
Power Source for Smart Phone and Tablet Backlighting
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM37603YG/TR | Not Recommended for New Designs | WLCSP-1.78×1.36-12B | 12 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | View | View | |||
SGM37603YTDF12G/TR | Not Recommended for New Designs | TDFN-3×3-12L | 12 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +85℃ | View | View |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
