LED背光驱动器 - LED-21425

LED背光驱动器

LED-21425

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The LED-21425 backlight driver is designed to power 4 strings of LED backlight module. It is a high efficiency and low profile driving board. Wide diming control allows users to set LED brightness smoothly. Power protection feature is able to protect LED module from damage by over current or over voltage.

 

Applicable to 4 LED strings

Low profile and compact design

Constant LED current (25mA)

PWM 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: 24g

LCD Application

LCD Model: NEC-NL6448BC26-22F

Operating Condition

 

Item

Symbol

Condition

Min.

Max.

Unit

Input Voltage

Vin

 

11

15

V

Operating Temperature

Top

Ha≦90%RH

-20

70

°C

Storage Temperature

Tstg

Ha≦95%RH

-30

85

°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

11.0

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
%

Output Current (Per String)

I-out

23

25

27
mA
Turn-on Threshold
V-thon
2
2.2
5
V
Turn-off Threshold
V-thoff
0.5
0.6
0.7
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
6
PWM
Brightness Control
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
NC
5
LEDIN5
NC
12
LEDO6
NC
6
LEDIN6
NC
13
ENA
Enable
7
LEDO1
Cathod1
14, 15
PWM, VCC
NC

 


LED背光驱动器 - LED-21325LED背光驱动器 - LED-21517
赫钛科技股份有限公司
电子邮件:spec_info@spectrah.com
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