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Endicott Research Group

ERG SFDQ LED backlight drivers

SFDQ and SFDQD Quad drivers address LCD backlights with higher LED-string voltages. Different configurations trade string count and current to suit the panel load.

4 Part numbers
12 V DC Input voltage options
2, 4 LED string options
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At a glance

SFDQ configuration options

Family
Quad
Dimming control
External or onboard, by configuration
Input voltage options
12 V DC
LED string options
2, 4
String voltage (typical, varies by part)
46–53.5 V
Current per string (typical, varies by part)
109–120 mA

Send the panel’s string voltage and current together. We’ll help find a Quad configuration that meets both requirements.

SFDQ part numbers.

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Input voltage
LED strings
String voltage (typ.)
Current per string (typ.)
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4 products
SFDQDB4216FEndicott Research Group SFDQLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 50.5 V, 109 mA. 12 V450.5 V109 mA126.75 × 39.12 mm (L × W)Onboard PWM with analog control; external PWMMolex 53261-1571Molex 52207-0660
SFDQDB4226FEndicott Research Group SFDQLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 46 V, 120 mA. 12 V446 V120 mANot listedNot listedNot listedNot listed
SFDQDB4239FEndicott Research Group SFDQLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 50.5 V, 109 mA. 12 V450.5 V109 mANot listedNot listedNot listedNot listed
SFDQDB4274FEndicott Research Group SFDQLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 53.5 V, 118 mA. 12 V253.5 V118 mANot listedNot listedNot listedNot listed

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Input voltage
LED strings
String voltage (typ.)
Current per string (typ.)

Dimming and connections

SFDQDB4216F has a 126.75 × 39.12 mm board and a flat-flex output connector. It accepts external PWM or an analog input for onboard dimming. We can help check the panel harness and mounting clearances.

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