SGM3727中文资料High Efficiency, 38V Boost White LED Driver数据手册SGMICRO规格书

描述 Description

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.

特性 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
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• Programmable Over-Voltage Protection
• Cycle-by-Cycle Current Limit
• Thermal Shutdown

应用 Application

Smart Phones and Portable Media Players
TFT LCD Displays
GPS/PND