Forenex FI2055S User manual

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FI2055S

(DC/DC)LEDDrivingBoard

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ReferenceManual

(Preliminary)

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ModelNumber:

FI2055SA‐3S9PwithLEDconnectorW2

FI2055SB‐3S9PwithLEDconnectorW1

FI2055SC‐3S9PwithLEDconnectorW4

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DocumentNo:doc‐FI2055S‐V10

PCBBareBoard:PB20552‐V10

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ApprovedBy

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CheckedBy

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PreparedBy

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Revision histories

Rev. No. Date Substantial Changes

1.0 2017/2 First issue.

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GeneralDescription

Thefront‐endofFI2055SseriesisahighlyefficientDC/DCtoprovideawideinputof

voltagerange.Theback‐endisaconstant‐currentLEDdriverwhichcandriveanumberof

LEDsinseries&parallelconfiguration.

Features:

●Wideinputrang:DC5V.

●Provideoutput(Typ.)1.95W.

●Flexibledigital(PWM)fordimmingcontrol.

●TheSoft‐startfunctionminimizeinrushcurrentwhilepoweringup.

●MultipleLEDProtections:

‐LEDOpen/Shortprotection

‐Over‐currentLimitprotection

‐Over‐temperatureprotection

‐Over‐voltageprotection

‐Undervoltagelockout(UVLO)

●Lowprofileandlightweight:75mm(L)x17mm(W)x6.6mm(H).

●RoHSCompliant.

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ItemSymbol ConditionsMIN. TYP.MAX.Unit

InputVoltageVinGND=0V4.7555.25V

InputCurrentIin ‐ 390‐mA

LEDOutputVoltageperstringVledVin=TYP.‐9.6‐V

LEDTotalOutputCurrentIled ‐ 180‐mA

Backlighton/offBL_EN DChigh1.5‐ 5V

DClow‐‐0.8V

BrightnessControlBL_PWM

Frequency10030020kHz

PWMofduty1(dark) 100(bright) %

Amplitude1.5‐ 5VIH

OperatingTemperature  TopHa=80%RH‐30 80℃

StorageTemperatureTstgHa=90%RH‐40 120℃

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PinAssignment

InputConnector(W3)

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LEDBacklightConnector(W1)forFI2055SBseries

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LEDBacklightConnector(W2)forFI2055SAseries

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LEDBacklightConnector(W4)forFI2055SCseries

Connector:A1250WR‐S‐6P(equalasmolex53261‐0671),1.25mm,sideentry

PinnumDescriptionI/ORemark

Pin1VinP

Pin2VinP

Pin3GNDPNote1

Pin4GNDP

Pin5BL_ENI

Pin6BL_PWMI

Connector:(JST‐S2B‐2.0mm)orequivalent,sideentry

PinnumDescriptionI/ORemark

Pin1LEDAnode(+)PVled

Pin2LEDCathode(‐)P

Connector:A1250WR‐S‐2P(equalasmolex51021‐0200),1.25mm,sideentry

PinnumDescriptionI/ORemark

Pin1LEDAnode(+) PVled

Pin2LEDCathode(‐)P

Pin3LEDAnode(+) PVled

Connector:A3500WR‐S‐2P(equalasJST‐SM02B),3.5mm,sideentry

PinnumDescriptionI/ORemark

Pin1LEDAnode(+)PVled

Pin2LEDCathode(‐)P

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Mechanicalspecification

Forenex FI2055S User manual

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