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SGM3775Q

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Automotive GradeAutomotive Grade

Automotive High Accuracy LED Controller with Spread Spectrum Frequency Modulation

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The SGM3775Q is a peak current mode, asynchronous controller for LED lights. The device supports Boost, Buck-Boost, SEPIC and Flyback configurations to meet multi-purpose applications. The SGM3775Q features a wide 4.5V to 65V input voltage range and supports up to 65V output voltage. 

The switching frequency can be set by the RT pin, or it can be synchronized by an external clock signal. The configurable frequency spread spectrum function is available to improve EMI performance. 

The SGM3775Q provides both analog dimming and PWM dimming methods to modulate LED current independently. Adjust the IADJ input to set the regulated LED current with over 15:1 contrast ratio, and adjust the DIM/PWM input to get a dimming range over 1000:1. The PDRV output is used to drive an external optional P-Channel MOSFET, which provides the fast response to the PWM signal. 

The device provides full protections including LED over-current, output over-voltage, output under-voltage, switch current limit, and thermal shutdown protections. The nFLT open-drain output indicates the logic low when fault occurs. The IMON output provides extra continuous LED current monitor, connecting IMON to external microcontroller for fault detection if necessary. 

The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications. 

The device is available in a Green TSSOP-20A (Exposed Pad) package.

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FEATURES
  • AEC-Q100 Qualified for Automotive Applications Device Temperature Grade 1
    TA = -40℃ to +125℃
  • 4.5V to 65V Wide Input Voltage Range
  • Programmable Switching Frequency
  • Support External Synchronized Frequency
  • Frequency Spread Spectrum
  • External Analog Dimming via IADJ Pin
  • External PWM Dimming via DIM/PWM Pin
  • Integrated P-Channel Dimming MOSFET Driver
  • Flexible External Loop Compensation
  • Flexible External Slope Compensation
  • Support Boost, Buck-Boost, SEPIC and Flyback Topologies
  • Short LED Protection
  • Open LED Protection
  • Thermal Shutdown
  • Fault Indicator
  • High LED Current Accuracy (< ±10%) over -40℃ to +150℃ Junction Temperature Range
  • Available in a Green TSSOP-20A (Exposed Pad) Package
APPLICATIONS

LED General Lighting Applications
Automotive Exterior Lighting Applications
Driver Monitoring Systems (DMS)
Exit Signs and Emergency Lighting

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)
SGM3775QPTS20G/TR
Active
TSSOP-20A (Exposed Pad)
20
YES
YESYESYESMSL3
-40℃ to +125℃
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1-24 units : $1.75/unit
25-99 units : $1.5/unit
100-249 units : $1.25/unit
250-499 units : $1/unit
500-999 units : $0.875/unit
1000-9999 units : $0.65/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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