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PDF RP2404 Data sheet ( Hoja de datos )
| Número de pieza | RP2404 | |
| Descripción | 4 Channels Pulse Dimming Current Source | |
| Fabricantes | RICHPOWER | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RP2404 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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Preliminary
RP2404
4 Channels Pulse Dimming Current Source for WLED Driver
General Description
Features
The RP2404 low-dropout bias supply for white LEDs is a
high-performance alternative to the simple ballast resistors
used in conventional white LED designs. The RP2404 uses
an internal resistor to set the bias current for 4LEDs, which
are matched to 2%. The RP2404's advantages over ballast
resistors include much lower bias variation with supply
voltage variation, significantly lower dropout voltage , and
2%
in some applictions, significantly improved efficiency.
Low 50mV Dropout at 20mA
16 Steps Pulse Dimming
2% LED Current Matching
2.7V to 4.5V Supply Voltage Range
Thermal Shutdown Protection
RP2404 is available in WQFN 3X3-16L package. It
provides the best backlighting solution with high efficiency
and smallest board space for portable application.
Applications
Ordering Information
Camera Phone, Smart Phone, MP3
White LED Backlighting
RP2404
Package Type
QW: WQFN 3X3-16L
Operating Temperature Range
G: Green ( Halogen Free with Commer-
cial Standard
Note :
Richpower Green products are :
RoHS compliant and compatible with the current
requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area.
Pin Configurations
(TOP VIEW)
RP2404-00P Jan 2010
16 15 14 13
NC 1
NC 2
NC 3
NC 4
GND
12 LED2
11 LED3
10 LED4
9 NC
5678
WQFN 3x3-16L
1
1 page  
Enable
Parameter
EN High Level Input Voltage
EN Low Level Input Voltage
EN Low Time for Dimming
EN High Time for Dimming
EN Low to Shutdown Delay
EN High Level Input Current
EN Low Level Input Current
Protection
Thermal Shutdown
Thermal Shutdown Hysteresis
Preliminary
Test Conditions
VIN
VIL
TSH DN
IIH (VIH =1.2V)
IIL (VIL =0.4V)
RP2404
Min Typ Max Units
1.2 -- -- V
-- -- 0.4 V
0.5 30 -- µS
0.5 --
-- µS
3 -- -- mS
-- 5 10 µA
-- 5 10 µA
-- 160 --
-- 20 --
°C
°C
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. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board (Single Layer,
1S) of JEDEC 51-3 thermal measurement standard.
RP2404-00P Jan 2010
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet RP2404.PDF ] | |
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