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SP6648EU/TR Arkusz danych(PDF) 13 Page - Sipex Corporation

Numer części SP6648EU/TR
Szczegółowy opis  Ultra-low Quiescent Current, High Efficiency Boost Regulator
PDF  16 Pages
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Producent  SIPEX [Sipex Corporation]
Strona internetowa  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6648EU/TR Arkusz danych(HTML) 13 Page - Sipex Corporation

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Date: 7/19/04
SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© Copyright 2004 Sipex Corporation
Brightness Control
One approach to control LED brightness is to
apply a PWM signal to the SHDN input of the
SP6648. In this case, the output current will be
equal to the product of 350mA and the average
duty cycle at the SHDN pin. An optional 10K
potentiometer (R5) may also be used for dim-
ming the LED current by varying the potentiom-
eter between low brightness and full brightness.
APPLICATIONS INFORMATION
VOUT
VREF
VOUT
VREF
Plug in the LumiLED
Unplug the LumiLED
PINOUTS
SP6648
10 Pin DFN
10
9
8
7
6
1
2
3
4
5
VBATT
LBI
LBON
RLIM
SHDN
V
OUT
LX
P
GND
GND
FB
VBATT
LBI
LBON
RLIM
SHDN
SP6648
10 Pin MSOP
1
2
3
4
5
10
9
8
7
6
VOUT
LX
PGNDV
GND
FB



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