LP3359
High performance, Current Source
For Parallel White-LED Driver
General Description
The LP3359 is a parallel white-LED driver with four
matched current outputs. It can supply a total output
current of 100mA over an input voltage range of 3.0V to
5.5V. The amount of constant current sourced to the
outputs is user selectable using one external sense
resistor. LP3359 typically draws 0.01µA when placed in
shutdown, and 180µA when operating in the no-load
condition. If any of the outputs are not used, leave the
pin(s) unconnected.
Brightness can be controlled by PWM techniques or by
adding a DC voltage. A PWM signal can be applied to
the EN/PWM pin to vary the perceived brightness of the
LED.
The LP3359 uses an active-high enable level. The
LP3359 is available in DFN-8 and TSSOP-8 package.
Features
Regulated IOUT With ± 0.3% Matching Between
Constant Current Outputs
Drives One, Two, Three or Four White LED’s with
No Ballast Resistors
3.0V to 5.5V Input Voltage
Up to 100mA Output Current
Active-High Enable
Very Small Solution Size
Very Low Shutdown Current (0.01µA typical)
Available in DFN-8 ,TSSOP-8 Package
RoHS Compliant and 100% Lead(Pb)-Free
Applications
Cellular and Smart mobile phone
PDA/DSC
LCD Display
Ordering Information
LP3359 -
□ □
□
F: PB-Free
Package
MS: MSOP-8
QV: DFN-8
Typical Application Circuit
LP3359
Pin Configurations
LP3359-datasheet
Ver.1.1
Nov.-2005
1
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1
POWER [ LOWPOWER SEMICONDUCTOR INC ]
