EUP3595
Parallel White-LED Driver
DESCRIPTION
The EUP3595 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.
EUP3595 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 EUP3595 uses an active-high enable level. The
EUP3595 is available in TDFN-8 and TSSOP-8 package.
FEATURES
Regulated I
OUT
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 TDFN-8 ,TSSOP-8 Package
RoHS Compliant and 100% Lead(Pb)-Free
APPLICATIONS
Portable devices using white or blue LEDs with
display and backlight or front-light
Keypad LEDs
Strobe LEDs
Typical Application Circuit
Figure 1.
DS3595 Ver1.0
Feb. 2007
1