SGM3131

停产

120mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source

The SGM3131 is a current-regulated white LED driver with integrated low dropout current sources and a high efficiency charge pump. The charge pump has automatically selectable 1×/1.5× fractional operation modes. The SGM3131 is well suited for white LED applications powered by a Li-Ion battery due to small equivalent open-loop resistance in 1× mode.

The supply voltage operates from 2.7V to 5.5V. The SGM3131 supports up to 4 LEDs for total maximum 120mA current. The ISET reference current is set through an external resistor on the ISET pin.

The SGM3131 contains a 4-bit digital-to-analog converter for 16-step LED current control. The LED current can be set between 0.5mA and 30mA by a serial pulse input signal into the EN pin.

The SGM3131 provide less than 1μA shutdown current and soft-start function. Built-in soft-start circuitry avoids excessive inrush current during startup and mode transition. The load is isolated from the input supply once shutdown occurs.

SGM3131 is available in a Green TQFN-3×3-16L package. It operates over an ambient temperature range of -40℃ to +85℃.

特性

Input Voltage Range: 2.7V to 5.5V
Support up to 4 LEDs at 30mA Each
16-Step LED Brightness Control Through One-Wire Interface
1× and 1.5× Charge Pump for High Conversion Efficiency
Switching Frequency: 1MHz
1% Regulated LED Current Matching
Built-in Soft-Start for Reducing Inrush Current
Low Input Ripple and Low EMI
Protection Features
- - Over-Current Protection
  - Under-Voltage Lockout
  - Thermal Shutdown
Operating Temperature Range: -40℃ to +85℃
Available in a Green TQFN-3×3-16L Package

应用

White LED Backlighting

Mobile Phones, MP3s

Digital Still Cameras

LCD Displays

订购信息

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)
SGM3131YTQ16G/TR	停产	TQFN-3×3-16L	16	Yes	Yes	Yes	Yes		-40℃ to +85℃	查看	查看

* 价格仅供参考。请联系我们的经销商获取正式报价。

** 交货时间仅供参考，可能会根据不同情况而发生变化。