|
|
PDF RT4528 Data sheet ( Hoja de datos )
| Número de pieza | RT4528 | |
| Descripción | High Voltage Buck LED Driver | |
| Fabricantes | Richtek Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT4528 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
®
RT4528
High Voltage Buck LED Driver with Dimming Control
General Description
The RT4528 is a current-mode LED driver supporting wide
input voltage range from 4.5V to 50V and output voltage
up to 50V. With internal 500kHz operating frequency, the
size of the external PWM inductor and input/output
capacitors can be minimized. High efficiency is achieved
by a 100mV current sensing control. LED dimming control
can be done from either analog or PWM signal. The RT4528
provides an internal soft-start function to avoid inrush
current and thermal shutdown to prevent the device from
overheat.
The RT4528 is available in the SOP-8 (Exposed pad)
package.
Ordering Information
RT4528
Package Type
SP : SOP-8 (Exposed-Option 2)
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
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.
Features
High Voltage : VIN Up to 50V, VOUT Up to 50V
Built-In 3A Power Switch
Current-Mode PWM Control
500kHz Fixed Switching Frequency
Analog or PWM Control Signal for LED Dimming
Internal Soft-Start to Avoid Inrush Current
Under-Voltage Lockout
Thermal Shutdown
RoHS Compliant and Halogen Free
Applications
Desk Lights and Room Lighting
Industrial Display Backlight
Marking Information
RT4528
GSPYMDNN
RT4528GSP : Product Number
YMDNN : Date Code
Pin Configurations
(TOP VIEW)
VCC
ISP
ISN
NC
8
27
GND
36
9
45
CREG
SW
CTL
VC
SOP-8 (Exposed Pad)
Simplified Application Circuit
VIN
Analog Dimming
or PWM Dimming
C1 RT4528
VCC
ISP
CTL ISN
RSENSE
R1
R2
C2
VC
SW
CREG
C3 GND
L1
D1
C4
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS4528-00 April 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Typical Application Circuit
VIN
4.5V to 50V
Analog Dimming
or PWM Dimming
R2
5.1M
R1
10k
C2
3.3nF
D1
C1
RT4528
1 VCC
ISP 2
6 CTL
ISN 3
RSENSE
100mV
5 VC
8 CREG
C3
SW 7
1µF GND
9 (Exposed Pad)
L1
RT4528
C4
Copyright ©2014 Richtek Technology Corporation. All rights reserved.
DS4528-00 April 2014
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
Outline Dimension
EXPOSED THERMAL PAD
(Bottom of Package)
J
A
Y
XB
RT4528
H
M
F
C
I
D
Symbol
A
B
C
D
F
H
I
J
M
Option 1
Option 2
X
Y
X
Y
Dimensions In Millimeters
Min Max
4.801
5.004
3.810
4.000
1.346
1.753
0.330
0.510
1.194
1.346
0.170
0.254
0.000
0.152
5.791
6.200
0.406
1.270
2.000
2.300
2.000
2.300
2.100
2.500
3.000
3.500
Dimensions In Inches
Min Max
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.047
0.053
0.007
0.010
0.000
0.006
0.228
0.244
0.016
0.050
0.079
0.091
0.079
0.091
0.083
0.098
0.118
0.138
8-Lead SOP (Exposed Pad) Plastic Package
Richtek Technology Corporation
14F, No. 8, Tai Yuen 1st Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.
DS4528-00 April 2014
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT4528.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT4528 | High Voltage Buck LED Driver | Richtek Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |