SP6648UEB Exar Corporation, SP6648UEB Datasheet - Page 13

• Manufacturer Part Number: SP6648UEB
• Description: Power Management Modules & Development Tools Ultra Low Quies Cur Hi-Eff Boost Reg
• Manufacturer: Exar Corporation
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of SP6648UEB

• Product: Power Management Modules

Plug in the LumiLED
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 10KΩ
potentiometer (R
ming the LED current by varying the potentiom-
eter between low brightness and full brightness.
Date: 6/7/06 Rev B
V BATT
SHDN
LBON
R LIM
LBI
1
2
3
4
5
5
) may also be used for dim-
10 Pin DFN
SP6648
V
OUT
V
REF
SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
10
9
8
7
6
V
LX
P GND
GND
FB
OUT
13
Unplug the LumiLED
SHDN
LBON
V
R
BATT
LBI
LIM
1
2
3
4
5
APPLICATIONS INFORMATION
10 Pin MSOP
SP6648
V
OUT
© 2006 Sipex Corporation
V
REF
10
PINOUTS
9
8
7
6
V
LX
P
GND
FB
OUT
GND
V