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RT8577 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT8577
Description  High Voltage 4-CH LED Driver
Download  12 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8577 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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DS8577-00 November 2011
www.richtek.com
RT8577
Typical Application Circuit
Figure 1. General Application
Figure 2. External P-MOSFET Isolation Application
LED1
LED4
VOUT
3, 17, 18,
21 (Exposed Pad)
GND
2
19
VC
9
560
0.22µF
RC
CC
PGND
13
11
6
External/Internal PWM
EN
PWM
:
:
:
:
:
:
:
:
ROVP2
ROVP1
COUT
4.7µF x 6
RRT
RT 8
9.1k
RISET 5
RISET
CREG
15
CREG
CSS
10
SS
0.1µF
1µF
47µF
CIN
CF
RF1
RSENSE
RDRV
5
1µF
CVCC
……
VIN
9V to 28V
14
12
16
DRV
SEN
VCC
MSW
OVP/UVP 4
Chip Enable
RT8577
10µH
L1
D1
STATUS
RSTATUS
100k
7
FLT
RF2
1k
1k
100
0
1nF
VIN
100m
56k
3.3M
82k
45V
:
:
:
:
LED2 1
3, 17, 18,
21 (Exposed Pad)
GND
VC
9
560
0.22µF
RC
CC
PGND
13
11
6
External/Internal PWM
EN
PWM
RRT
RT 8
9.1k
RISET 5
RISET
CREG
15
CREG
CSS
10
SS
0.1µF
1µF
47µF
CIN
CF
RF1
RSENSE
RDRV
5
1µF
CVCC
VIN
9V to 28V
14
12
16
DRV
SEN
VCC
MSW
OVP/UVP 1
Chip Enable
RT8577
10µH
L1
D1
STATUS
RSTATUS
100k
7
FLT
RF2
1k
1k
100
0
1nF
VIN
FLT
100m
56k
ROVP2
ROVP1
3.3M
82k
LED1
LED4
VOUT
2
19
:
:
:
:
:
:
:
:
COUT
4.7µF x 6
……
45V
:
:
:
:
LED2 1


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