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PDF SM6704 Data sheet ( Hoja de datos )
| Número de pieza | SM6704 | |
| Descripción | 4-Channel Constant Current LED Driver | |
| Fabricantes | SamHop | |
| Logotipo |  |
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4-Channel Constant Current LED Driver
SM6704
GENERAL DESCRIPTION
The SM6704 is a 4-channel constant current LED
driver that has a wide range of output current from
20mA to 180mA per channel and through an
external resistor (Rext) to set the maximum sink
current which gives users flexibility in controlling the
light intensity of LEDs. In addition, users can
precisely adjust LED brightness from 0% to 100%
via OE control pin using popular pulse width
modulation (PWM) signal. Low output voltage drop
operation of 0.6V at 180mA allows for more power
efficient designs across wider supply voltage range,
the 4 LED pin are compatible with high voltage up to
50V supporting applications with long strings of
LEDs. Additionally, to ensure the system reliability,
the SM6704 is contained with LED string short circuit
detection and thermal shutdown function to protect
IC from over temperature 150℃. Also, the thermal
pad enhances the power dissipation. As a result, a
large amount of current can be handled safely in one
package.
FEATURES
● 4-Channel constant sink current
● Constant output current invariant to load
voltage change
● Maximum output current per channel up to
180mA
● Output current adjusted through an external
resistor
● Excellent output current accuracy :
- Between channels: ±3% , and
- Between ICs: ±6% (Max.)
● Protections :
- Over temperature
- String short circuit detection
● Low dropout current source
● LED output voltage up to 50V
● 3.3V to 5.5V logic supply range
● Package SOP-8 with thermal pad
APPLICATIONS
● High-Flux LED and architectural lighting
● LCD backlight , LED signs and displays
● Automotive interior lighting
TYPICAL APPLICATION CIRCUIT
www.samhop.com.tw
1
Rev. 1.0 @ 2010 /06
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet SM6704.PDF ] | |
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