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RT8489 Datasheet(PDF) 9 Page - Richtek Technology Corporation

Part # RT8489
Description  High Voltage 4-CH LED Driver Controller
PDF  16 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8489 Datasheet(HTML) 9 Page - Richtek Technology Corporation

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RT8489
9
DS8489-00 November 2012
www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Load Transient Response
Time (250
μs/Div)
GATE
(5V/Div)
IOUT
(100mA/Div)
VOUT
(50V/Div)
ACTL
(5V/Div)
VIN = 24V, PWM = 1kHz, Duty = 50%
Power On from EN
Time (100
μs/Div)
VIN = 24V, ILED = 400mA, CSS = 0.1
μF
EN
(5V/Div)
GATE
(5V/Div)
LED1
(500mA/Div)
VOUT
(50V/Div)
Soft-Start Current vs. Input Voltage
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
4
8
12
16
20
24
28
Input Voltage (V)
Shutdown Current vs. Input Voltage
0
1
2
3
4
5
6
7
4
8
12
16
20
24
28
Input Voltage (V)
EN = 0
ISENSE Threshold Voltage vs. Input Voltage
50
60
70
80
90
100
110
120
130
140
150
4
8
12
16
20
24
28
Input Voltage (V)
LED Regulated Voltage vs. Input Voltage
650
660
670
680
690
700
4
8
12
16
20
24
28
Input Voltage(V)



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