LED Backlight Driver - LED-21615

LED Backlight Driver

LED-21615

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The LED-21615 driving board is designed to drive 6 strings of LED backlight module. LED-21615 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 6 LED strings

Low profile and compact design

Constant LED current (15mA)

PWM/Or DC Voltage Dimming Control

Short circuit and overload protection

External power On/Off control

 

Mechanical Characteristics

Dimension (L x W x H): 100mm x 30mm x 7.5mm
Weight: 12.5g

LCD Application

LCD Model: NEC-NL10276BC13-01C

Operating Condition

 

Item

Symbol

Condition

Min.

Max.

Unit

Input Voltage

Vin

 

3.3

15

V

Operating Temperature

Top

Ha≦90%RH

-30

85

°C

Storage Temperature

Tstg

Ha≦95%RH

-40

100

°C

Operating Humidity

Hop

Ta=0 ~ 55°C

20

90

%RH

Storage Humidity

Hstg

Ta=20 ~ 80°C

-

95

%RH


Operating Characteristics

T=25°C

Item

Symbol

Min.

Typ.

Max.

Unit

Input Voltage

Vin

3.3

12.0

15

V

LED String Voltage

V-led 

-

27.9

31.5
V

Efficiency

H

-

80

-
%

Output Current (Per String)

I-out

13

15

17
mA
PWM Control Duty Ratio
10
-
100
%
PWM Control Frequency
180
-
25K
HZ
PWM Swing Voltage
2.0
-
5.5
V
DC Voltage Dimming Control
0
5
V

 


(CN1) Input Connector

 

Pin No.

Symbol

Description

1

BKLT
VDD Input
2
BKLT
VDD Input
3
GND
Ground
4
GND
Ground
5
ENA
Enable ( ON=+5V; OFF=0V)
6
Dimming
PWM/or DC Voltage
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
Cathod4
4
LEDIN4
Anode4
11
LEDO5
Cathod5
5
LEDIN5
Anode5
12
LEDO6
Cathod6
6
LEDIN6
Anode6
13
ENA
Enable
7
LEDO1
Cathod1
14, 15
Brightness, VCC
NC

 


 
Spectrah Dynamics Inc.,
E-Mail: spec_info@spectrah.com
Tel: 886-2-86472026 Fax: 886-2-86472201
Address: 5F-2, No. 188, Section #3, Ta-Tung Road, Hsi-Chi,Taipei Hsien 22103, Taiwan
ISO 9001: 2010 Certificated