The SGM3727 is a step-up DC/DC converter designed for driving the white LEDs with an externally programmable constant current. This device features integrated, 38V power MOSFET that is capable of driving up to 10 white LEDs in series, providing inherent current matching for uniform brightness. WLED brightness adjustment is easily achieved via a single wire interface, totally 32 brightness levels of LED Dimming.
The SGM3727 features a variety of protection circuits, including integrated over-voltage protection (OVP), soft-start, cycle-by-cycle current limiting, and thermal shutdown protection circuitry.
The SGM3727 has 1A current limit. It is available in a Green TDFN-2×2-8L package. It operates over an ambient temperature range of -40℃ to +85℃.
High-Efficiency Boost DC/DC WLED Bias Supply
Internal 38V, 0.5Ω Power MOSFET
Up to 10 Serial White LEDs per String
Switch Current Limit: 1A
Single Wire Interface 32 Brightness Levels for LED Dimming
Programmable OVP Voltage
Soft-Start Function
No Leakage from VIN to GND through LED String
Thermal Shutdown
Cycle-by-Cycle Over-Current Protection
-40℃ to +85℃ Operating Temperature Range
Available in a Green TDFN-2×2-8L Package
TFT LCD Displays
Smart Phones
Portable Media Players
GPS/Personal Navigation Devices
| Part Number | Status | Package | Pins | Pb-Free | Temp Range | |
| SGM3727YDE8G/TR | Production | TDFN-2×2-8L | 8 | Y | -40℃ to +85℃ | Samples |
