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Endicott Research Group

ERG SFDM LED backlight drivers

SFDM Mini drivers bring constant-current backlight power to compact LCD assemblies. An external PWM signal controls brightness, with a separate enable function.

33 Part numbers
12 V DC Input voltage options
1, 2, 3, 4, 5, 6 LED string options
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At a glance

SFDM configuration options

Family
Mini
Dimming control
External PWM
Input voltage options
12 V DC
LED string options
1, 2, 3, 4, 5, 6
String voltage (typical, varies by part)
19–32 V
Current per string (typical, varies by part)
10–120 mA

Start here when your controller provides a PWM dimming signal and board space is limited. Compare SFDMD when you need the PWM generator on the driver.

SFDM part numbers.

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Input voltage
LED strings
String voltage (typ.)
Current per string (typ.)
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33 products
SFDMB3638FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 6 LED strings. Typical per-string output: 19 V, 16 mA. 12 V619 V16 mA
SFDMB3646FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 5 LED strings. Typical per-string output: 32 V, 20 mA. 12 V532 V20 mA
SFDMB3713FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 6 LED strings. Typical per-string output: 30 V, 10 mA. 12 V630 V10 mA
SFDMB3785FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 32 V, 25 mA. 12 V432 V25 mA
SFDMB3786FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 28 V, 100 mA. 12 V128 V100 mA
SFDMB3787FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 32 V, 20 mA. 12 V132 V20 mA
SFDMB3792FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 3 LED strings. Typical per-string output: 32 V, 25 mA. 12 V332 V25 mA
SFDMB3857FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 29 V, 15.1 mA. 12 V229 V15.1 mA
SFDMB3866FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 3 LED strings. Typical per-string output: 32 V, 19.9 mA. 12 V332 V19.9 mA
SFDMB3875FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 32 V, 25 mA. 12 V432 V25 mA
SFDMB3878FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 30 V, 15 mA. 12 V430 V15 mA
SFDMB3882FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 5 LED strings. Typical per-string output: 32 V, 25 mA. 12 V532 V25 mA
SFDMB3884FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 32 V, 25 mA. 12 V232 V25 mA
SFDMB3885FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 32 V, 25 mA. 12 V432 V25 mA
SFDMB3886FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 32 V, 60 mA. 12 V132 V60 mA
SFDMB3902FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 3 LED strings. Typical per-string output: 32 V, 20 mA. 12 V332 V20 mA
SFDMB3906FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 28 V, 90 mA. 12 V228 V90 mA
SFDMB3907FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 32 V, 80 mA. 12 V232 V80 mA
SFDMB3927FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 30 V, 16 mA. 12 V130 V16 mA
SFDMB3928FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 30 V, 15 mA. 12 V430 V15 mA
SFDMB3940FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 32 V, 70 mA. 12 V232 V70 mA
SFDMB3942FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 30 V, 15 mA. 12 V230 V15 mA
SFDMB3945FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 32 V, 60 mA. 12 V232 V60 mA
SFDMB3947FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 3 LED strings. Typical per-string output: 32 V, 40 mA. 12 V332 V40 mA
SFDMB3966FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 3 LED strings. Typical per-string output: 30 V, 20 mA. 12 V330 V20 mA
SFDMB3969FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 6 LED strings. Typical per-string output: 32 V, 18 mA. 12 V632 V18 mA
SFDMB3978FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 5 LED strings. Typical per-string output: 31 V, 15 mA. 12 V531 V15 mA
SFDMB3985FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 4 LED strings. Typical per-string output: 28 V, 15 mA. 12 V428 V15 mA
SFDMB3986FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 28 V, 15 mA. 12 V228 V15 mA
SFDMB4013FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 29 V, 120 mA. 12 V129 V120 mA
SFDMB4139FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 1 LED string. Typical per-string output: 29 V, 120 mA. 12 V129 V120 mA
SFDMB4170FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 29 V, 50 mA. 12 V229 V50 mA
SFDMB4191FEndicott Research Group SFDMLED backlight driver, 12 V DC input, 2 LED strings. Typical per-string output: 32 V, 60 mA. 12 V232 V60 mA

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

Dimming and connections

SFDMB3638F has a 55.6 × 24.4 mm board and is less than 5 mm high. Its input connector carries separate PWM, enable, and fault signals. We can help match those connections to your controller.

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