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PDF CL325 Data sheet ( Hoja de datos )
| Número de pieza | CL325 | |
| Descripción | 3-Channel 25mA Linear LED Driver | |
| Fabricantes | Supertex | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CL325 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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CL325
3-Channel 25mA Linear LED Driver
Features
► ±6% current accuracy @ 4.0 -15V
► 90V standoff voltage
► Separate enable pins for each channel allow for
www.DataSheePt4WU.Mcomdimming
► Over-temperature protection
► 8-Lead SOIC (w/Heat Slug) package
Applications
► LCD backlighting
► Indicator lamps
General Description
The CL325 is designed to drive 3 strings of LEDs at a
constant current of 25mA.
Other drivers with currents in the range of 20 - 30mA are
available. The drive current is fixed, with a ±6% tolerance
over a VOUT range of 4 - 15V.
Separate enable pins for each channel allow for PWM
dimming, 3-step linear dimming, or individual disconnection
of faulty LED strings.
Over-temperature protection circuitry shuts down all 3
channels when the nominal die temperature reaches 135°C.
Normal operation resumes when the die temperature drops
by 30°C.
The CL325 is available in the 8-Lead SOIC (w/Heat Slug)
package and requires a single ceramic bypass capacitor
which may be shared among several drivers.
Block Diagram and Typical Application Circuit
6.5 - 90V
Host
Controller
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
CL325
GND
4
1 page  
Higher LED Current
VLL
CL325
www.DataSheet4U.com
Host
Controller
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
CL325
GND
4
By paralleling outputs, higher LED currents can be achieved. In addition, linear dimming in 3 discrete steps may be obtained
by enabling 1, 2, or 3 outputs.
Lowering CL325 Power Dissipation: Separate VIN Supply
VLL
Host
Controller
VIN
CIN
100nF
8
VIN
REG VDD
1 EN1
2 EN2
3 EN3
7
OUT1
6
OUT2
5
OUT3
CL325
GND
4
CL325 power dissipation may be lowered by supplying the CL325 from a voltage source (VIN) that is lower in voltage than
the LED supply (VLL).
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet CL325.PDF ] | |
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