led-backlight-controller-LED-283265

LED Backlight Controller

LED-283265

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The LED-283265 driving board is designed to drive LED backlight module. It is a constant frequency and current mode controller applied to drive various LED rails. In constant current LED applications, the LED-283265 provides wide dimming feature through PWM or DC voltage control to allow users to adjust brightness smoothly. Additional power protection feature protects LED module from damage by overcurrent and overvoltage.

 

Applicable to 4 LED Strings

Low profile and compact design

Costant LED Current (130mA)/ Per String

PWM/or DC Dimming Control

Short circuit and overload protection

Output Voltage 21V~30V

 

Mechanical Characteristics

Dimension (L x W x H): 100mm x 40mm x 7.5mm
Weight: 21g

LCD Application

LCD Model:

Operating Condition

 

Item

Symbol

Condition

Min.

Max.

Unit

Input Voltage

Vin

 

11

13.2

V

Operating Temperature

Top

Ha≦90%RH

-30

80

°C

Storage Temperature

Tstg

Ha≦95%RH

-40

100

°C

Operating Humidity

Hop

Ta=0 ~ 55°C

-

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

11

12

13.5

V

Output Voltage / Per String

V-led 

21

 

30
V

Dimming Ratio

 

 

-

100:1

Output Current / Per String

I-out

-

-

130
mA
PWM Control Duty Ratio
1
-
100
%
PWM Control Frequency
100
-
5K
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

1

HV1
Anode1
2
HV2
Anode2
3
HV3
Anode3
4
HV4
Anode4
5
HV5
NC
6
HV6
NC
7
LV1
Cathod1
8
LV2
NC
9
LV3
Cathod2
10
LV4
NC
11
LV5
Cathod3
12
LV6
NC
13
LV7
Cathod4
14
LV8
NC
15
Reserve
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