IK2804D Datasheet, PDF (1/12 Pages) IK Semicon Co., Ltd – 4 constant-current output channels

TECHNICAL DATA
HIGH-POWER LED DRIVER
FEATURES
IK2804
 4 constant-current output channels
 Constant output current invariant to load voltage
change
 Maximum output constant current per channel:
240mA
 Excellent output current accuracy:
between channels: <±3% (max.), and
between ICs: <±6% (max.)
 Output current adjusted through an external
resistor
 Schmitt trigger input
 5V supply voltage
 Package type: Pb-free SOP8 with thermal pad
Small Outline Package
SOP8
Device
IK2804DT
ORDERING INFORMATION
Operating
Temperature Range
Package
ТА = - 40 ... + 85 С
SOP-8
Shipping
Tape& Reel
Current Accuracy
Between Channels
Between ICs
<±3%
<±6%
Conditions
I_OUT = 40 ~ 240 mA
PRODUCT DESCRIPTION
IK2804 is an instant On/Off LED driver for high power LED applications and exploits to enhance
its output characteristics. At IK2804 output stage, four regulated current ports are designed to provide
uniform and constant current sinks for driving LEDs within a large range of VF variations.
IK2804 provides users 4-channel constant current ports. Users may adjust the output current
from 40 mA up to 240mA through an external resistor, Rext, which gives users flexibility in controlling
the light intensity of LEDs. In addition, users can precisely adjust LED brightness from 0% to 100%
via output enable
with Pulse Width Modulation.
Additionally, to ensure the system reliability, IK2804 is built with TP (Thermal Protection) function
and thermal pad. The TP function protects IC from over temperature (165°C). Also, the thermal pad
enhances the power dissipation. As a result, a large amount of current can be handled safely in one
package.
APPLICATIONS
 High-flux LED lighting
 Automotive interior lighting
 LCD backlight
 Photocopier
 Scanner
1
2011, February Ver. 03