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SGM3131

停产

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

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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℃.

More
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
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM3131YTQ16G/TR
停产
TQFN-3×3-16L
16
Yes
YesYesYes
-40℃ to +85℃
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* 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。

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