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Endicott Research Group

ERG SFDH LED backlight drivers

SFDH and SFDHD drivers combine a compact board format with constant-current backlight power. Dimming and connection options depend on the selected panel configuration.

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

SFDH configuration options

Family
H
Dimming control
External or onboard, by configuration
Input voltage options
12 V DC
LED string options
2, 4
String voltage (typical, varies by part)
22–25 V
Current per string (typical, varies by part)
50.4–150 mA

SFDHDB4521F is an ERG driver option for Tianma’s P0840XGF1MA00 panel. We can help with the driver, input harness, and panel connection.

SFDH part numbers.

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Input voltage
LED strings
String voltage (typ.)
Current per string (typ.)
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2 products
SFDHDB4321FEndicott Research Group SFDHLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 22 V, 50.4 mA. 12 V422 V50.4 mA70.66 × 24.38 mm (L × W)< 5 mmOpen and short circuit; overvoltage shutdownOnboard PWM with analog control; external PWMMolex 53261-0871Molex 53261-1271
SFDHDB4521FEndicott Research Group SFDHLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 25 V, 150 mA. 12 V225 V150 mANot listedNot listedNot listedNot listedNot listedNot listed

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

Dimming and connections

SFDHDB4321F has an analog input for onboard PWM, a separate enable input, and a fault indicator. Its board is less than 5 mm high. We’ll check the dimming signals and controller harness for the part you’re considering.

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