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SGM37604A

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Highly Efficient 4-String White LED Driver

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The SGM37604A is a high efficiency 4-string white LED driver with a 1.2MHz boost converter. The supply voltage operates from 3V to 24V. The SGM37604A is capable of driving up to 8 LEDs in series for 40mA maximum LED current per string while achieving high conversion efficiency. An adaptively current-regulated method allows different LED string voltages while LED current remains in regulation. The LED current is programmed through an I2C interface or a PWM signal input. These features make it optimized for compact solutions and ideal for LCD display backlighting.

The SGM37604A is available in Green WLCSP-1.78×1.36-12B and TDFN-3×3-12L packages. It operates over the -40 to +85 temperature range.

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FEATURES
  • 12-Bit Resolution for Dimming Control

  • Up to 90% Boost Efficiency

  • Switching Frequency: 1.2MHz

  • Support 1 to 4 LED Strings in Parallel at Maximum 29.5V Output

  • 11% LED Current Matching across Process, Voltage and Temperature at ILED = 12.21μA

  • 1% LED Current Matching across Process, Voltage and Temperature at ILED = 25mA

  • 11% LED Current Accuracy across Process, Voltage and Temperature at ILED = 12.21μA

  • 3% LED Current Accuracy across Process, Voltage and Temperature at ILED = 25mA

  • PWM Dimming Interface

  • Programmable I2C Interface

  • Phase Shift Function

  • Hybrid PWM + Current Dimming for Higher LED Driver Optical Efficiency

  • Low EMI by Conducting Ringing Cancelling

  • Protection Features

    Over-Voltage Protection

    Over-Current Protection

    Thermal Shutdown

APPLICATIONS

Power Source for Smart Phone and Tablet Backlighting

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)
SGM37604AYG/TR
Active
WLCSP-1.78×1.36-12B
12
Yes
YesYesYesMSL1
-40℃ to +85℃
View
View
1-24 units : $0.7/unit
25-99 units : $0.6/unit
100-249 units : $0.5/unit
250-499 units : $0.4/unit
500-999 units : $0.35/unit
1000-9999 units : $0.26/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 70 days
1000K and above : 98 days
SGM37604AYTDF12G/TR
Active
TDFN-3×3-12L
12
Yes
YesYesYesMSL1
-40℃ to +85℃
View
View
1-24 units : $0.7/unit
25-99 units : $0.6/unit
100-249 units : $0.5/unit
250-499 units : $0.4/unit
500-999 units : $0.35/unit
1000-9999 units : $0.26/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days

* 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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