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SGM3133

Obsolete

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

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The SGM3133 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 SGM3133 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 SGM3133 contains a 4-bit digital-to-analog converter for 16-step LED current control. The LED current can be set between 1.25mA and 20mA by a serial pulse input signal into the EN/SET pin. Built-in soft-start circuitry avoids excessive inrush current during startup and mode transition.


The SGM3133 is available in a Green TQFN-3×3-16L package. It is specified over an ambient temperature range of -40℃ to +85℃.

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FEATURES
  • Input Voltage Range: 2.7V to 5.5V
  • Support up to 4 LEDs at 20mA Each
  • 16-Step LED Brightness Control through One-Wire Interface
  • 1× and 1.5× Charge Pump for High Conversion Efficiency
  • Automatic Charge Pump Mode Conversion
  • Switching Frequency: 1MHz
  • 1% Regulated LED Current Matching
  • Built-in Soft-Start for Reducing Inrush Current
  • Low Noise 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
APPLICATIONS

White LED Backlighting

Mobile Phones, MP3s

Digital Still Cameras

LCD Displays

Ordering Information
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)
SGM3133YTQ16G/TR
Obsolete
TQFN-3×3-16L
16
Yes
YesYesYes
-40℃ to +85℃
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* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.

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SG Micro Corp (SGMICRO) specializes in the development, manufacturing and sales of high-performance and high-reliability integrated circuits for analog signal conditioning and system power management, offering innovative solutions to a broad range of applications in the industrial, automotive, communication, computing, consumer electronics, and medical equipment markets.
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