The SGM3727 is a high efficiency current-regulated white LED driver with a boost DC/DC converter. With an internal 38V/1A power MOSFET, the SGM3727 supports up to 10 white LEDs in series and achieves uniform brightness. 32-step LED current can be set by a serial pulse signal into the EN/SET pin.
The SGM3727 includes a comprehensive set of protection features such as over-voltage protection, cycle-by-cycle current limit and thermal shutdown. Built-in soft-start circuitry avoids excessive inrush current during startup.
The SGM3727 is available in a Green TDFN-2×2-8L package. It operates over an ambient temperature range of -40°C to +85°C.
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FEATURES
- Integrated 38V/1A Switch with 0.5Ω On-Resistance
- High Efficiency Boost Bias Supply
- Support up to 10 LEDs in Series per String
- 32-Step LED Brightness Control through One-Wire Interface
- Automatic Soft-Start for Reducing Inrush Current
- No Leakage from VIN to GND through LED String
- Protection Features
- Programmable Over-Voltage Protection
- Cycle-by-Cycle Current Limit
- Thermal Shutdown
- -40℃ to +85℃ Operating Temperature Range
- Available in a Green TDFN-2×2-8L Package
APPLICATIONS
Smart Phones and Portable Media Players
TFT LCD Displays
GPS/PND
