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LED-Backlight-Ansteuerung

LED-21315

Produktkatalog

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Auswahlsanleitung

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The LED-21315 driving board is designed to drive 3 strings of LED backlight module. LED-21315 is able to drive upto 10 white LEDs in series per string with constnat current. Onboard high quality converter drives LED strings and control the dimming of LED strings independently.It is a high efficiency and low profile driving board. Wide diming control allows users to set LED brightness smoothly. Additional power protection feature is able to protect LED module from damage by overcurrent or overvoltage.

Applicable to 3 LED strings

Low profile and compact design

Constant LED current (15mA)

PWM dimming control

Short circuit and overload protection

External power On/Off control

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Mechanical Characteristics

Dimension (L x W x H): 100mm x 30mm x 7.5mm
Weight: 24g

LCD Application

LCD Model: AUO-G057VN01

Operating Condition

Item	Symbol	Condition	Min.	Max.	Unit
Input Voltage	Vin		3.3	15	V
Operating Temperature	Top	Ha≦90%RH	-20	85	°C
Storage Temperature	Tstg	Ha≦95%RH	-30	100	°C
Operating Humidity	Hop	Ta=0 ~ 55°C	20	90	%RH
Storage Humidity	Hstg	Ta=20 ~ 80°C	-	95	%RH

Operating Characteristics

Unless otherwise noted Vin=12 Volts DC and T=25°C

Item	Symbol	Min.	Typ.	Max.	Unit
Input Voltage	Vin	3.3	12.0	15	V
Input Current	I-in	310	320	340	mA
LED String Voltage	V-led	30.4	31.6	32.8	V
Efficiency	H	78	80	82	%
PWM Control Duty Ratio		10	-	100	%
PWM Control Frequency		180	-	25K	HZ
PWM Swing Voltage		2.0	-	5.5	V
Output Current (Per String)	I-out	13.5	15	16.3	mA
Brightness Control		5		0	V

(CN1) Input Connector

Pin No.	Symbol	Description
1	BKLT	DC+12V
2	BKLT	DC+12V
3	GND	Ground
4	GND	Ground
5	ENA	Enable ( ON=+5V; OFF=0V)
6	PWM	Brightness Control (0V-MAX, +5V-MIN)
7	AR	NC

(CN2) Output Connector

Pin No.	Symbol	Description	Pin No.	Symbol	Description
1	LEDIN1	Anode1	8	LEDO2	Cathod2
2	LEDIN2	Anode2	9	LEDO3	Cathod3
3	LEDIN3	Anode3	10	LEDO4	NC
4	LEDIN4	NC	11	LEDO5	NC
5	LEDIN5	NC	12	LEDO6	NC
6	LEDIN6	NC	13	ENA	Enable
7	LEDO1	Cathod1	14, 15	PWM, VCC	NC

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