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RT8525 Datasheet(PDF) 1 Page - Richco, Inc.

Part # RT8525
Description  Boost Controller with Dimming Control
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Manufacturer  RICHCO [Richco, Inc.]
Direct Link  http://www.richco-inc.com
Logo RICHCO - Richco, Inc.

RT8525 Datasheet(HTML) 1 Page - Richco, Inc.

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RT8525
®
DS8525-01 March 2012
www.richtek.com
1
©
Copyright 2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Ordering Information
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Boost Controller with Dimming Control
Pin Configurations
SOP-14
(TOP VIEW)
Marking Information
RT8525GS : Product Number
YMDNN : Date Code
General Description
The RT8525 is a wide input operating voltage range step
up controller. High voltage output and large output current
are feasible by using an external N-MOSFET. The RT8525
input operating range is from 4.5V to 29V.
The RT8525 is an optimized design for wide output voltage
range applications. The output voltage of the RT8525 can
be adjusted by the FB pin. The PWMI pin can be used as
a digital input, allowing WLED brightness control with a
logic-level PWM signal.
Features
VIN Range : 4.5V to 29V
Programmable Soft-Start Time
Programmable Boost SW Frequency from 50kHz to
600kHz
Output Over Voltage Protection
Output Under Voltage Protection
14-Lead SOP Package
RoHS Compliant and Halogen Free
Applications
LCD TV, Monitor Display Backlight
LEDDriver Application
RT8525
GSYMDNN
DRV
PGND
ISW
EN
OOVP
FB
FAULT
VDC
VIN
COMP
SS
FSW
AGND
PWMI
2
3
4
5
8
7
6
14
13
12
11
10
9
Typical Application Circuit
Package Type
S : SOP-14
RT8525
Lead Plating System
G : Green (Halogen Free and Pb Free)
RS
RSLP
M1
D1
L1
DRV
ISW
PGND
OOVP
FAULT
RT8525
VIN
VDC
CDC
EN
Chip Enable
CC2
RC
CC1
RSW
CSS
FSW
SS
COMP
FB
14
11
13
9
10
2
1
3
5
4
12
8
RFLT
AGND 6
PWMI
PWMI
7
VIN
12V
33µH
2.4k
50m
100k
COVP
0.33µF
56k
33k
27nF
CVIN
CIN
100µF
1µF
1µF
ROVP1
ROVP2
150k
6k
RFB1
RFB2
3k
117k
COUT
VOUT
100µF x 2
50V
24V


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