|
|
PDF RT8510 Data sheet ( Hoja de datos )
| Número de pieza | RT8510 | |
| Descripción | 43V 4-CH LED Driver | |
| Fabricantes | Richtek | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de RT8510 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
RT8510
43V 4-CH LED Driver
General Description
The RT8510 is a high efficiency driver for white LEDs. It is
designed for LCD panels that employ an array of LEDs as
the lighting source. An integrated switch current mode
boost controller drives four strings in parallel and supports
up to 12 pieces of LED per string. The internal current
sinks support a maximum of ±2% current mismatching
for excellent brightness uniformity in each string of LED.
To provide enough headroom for current sink operation
the boost controller monitors the minimum voltage of
feedback pins and regulates an optimized output voltage
for power efficiency.
The RT8510 has a wide input voltage range from 4.2V to
24V and provide an adjustable 10mA to 40mA LED current.
The internal 200mΩ, 43V power switch with current-mode
control provides cycle-by-cycle over current protection.
RT8510 also integrates PWM dimming function for
accurate LED current control. The input PWM dimming
frequency can operate from 120Hz to 30kHz without
inducing any inrush current through the LED or inductor.
The switching frequency of the RT8510 is adjustable from
500kHz to 2MHz, allowing the user flexibility between
efficiency and component size.
The RT8510 is available in a WQFN-16L 3x3 package.
Ordering Information
RT8510
Package Type
QW : WQFN-16L 3x3 (W-Type)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richtek Green 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
z Wide Input Voltage : 4.2V to 24V
z High Output Voltage : Up to 43V
z Adjustable Channel Current : 10mA to 40mA
z Channel Current Accuracy : ±3%
z Channel Current Matching : ±2%
z PWM Dimming Frequency : 120Hz to 30kHz
z Adjustable Switching Frequency : 500kHz to 2MHz
z Built-In Soft-Start
z Disconnects LED in Shutdown
z Open Current Sink Detection
z Adjustable Over Voltage Protection
z Over Temperature Protection
z Current Limit Protection
z Thin 16-Lead WQFN Package
z RoHS Compliant and Halogen Free
Applications
z UMPC and Notebook Computer Backlight
z GPS, Portable DVD Backlight
Pin Configurations
(TOP VIEW)
16 15 14 13
AGND
COMP
ISET
RT
1
2
3
4
GND
17
12 OVP
11 PGND
10 PGND
9 LX
5 678
WQFN-16L 3x3
DS8510-00 July 2010
www.richtek.com
1
1 page  
RT8510
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Fault Protection
OVP Threshold
VOVP
OVP Fail Threshold
VOVPF
Thermal Shutdown Temperature TSD
LED Pin Under Voltage
Threshold
VLSD
Regulated VCHx
VCHx
No Connection
Highest LED String Voltage,
RISET = 4.75k
-- 1.2 --
V
-- 50 -- mV
-- 160 -- °C
-- 50 -- mV
-- 0.4 --
V
Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational
sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may
remain possibility to affect device reliability.
Note 2. θJA is measured in natural convection at TA = 25°C on a high-effective thermal conductivity four-layer test board of JEDEC
51-7 thermal measurement standard. The measurement case position of θJC is on the exposed pad of the package
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Note 5. Guaranteed by design; not subject to production testing.
DS8510-00 July 2010
www.richtek.com
5
5 Page 
Outline Dimension
D
E
SEE DETAIL A
D2
L
1
E2
RT8510
eb
11
22
A
A1 A3
DETAIL A
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Symbol
A
A1
A3
b
D
D2
E
E2
e
L
Dimensions In Millimeters
Min Max
0.700
0.800
0.000
0.050
0.175
0.250
0.180
0.300
2.950
3.050
1.300
1.750
2.950
3.050
1.300
1.750
0.500
0.350
0.450
Dimensions In Inches
Min Max
0.028
0.031
0.000
0.002
0.007
0.010
0.007
0.012
0.116
0.120
0.051
0.069
0.116
0.120
0.051
0.069
0.020
0.014
0.018
W-Type 16L QFN 3x3 Package
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing)
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)89191466 Fax: (8862)89191465
Email: [email protected]
Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design,
specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed
by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek.
DS8510-00 July 2010
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT8510.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| RT8510 | 43V 4-CH LED Driver | Richtek |
| RT8510 | Rotational Position Transducer |  Latin Tech |
| RT8510 | Rotational Position Transducer |  Celesco |
| RT8511A | 43V Asynchronous Boost WLED Driver | Richtek |
| 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 |