July19-07 SP7120-22 Evaluation Board Manual © 2007 Sipex Corporation
_______________________________________________________________ DESCRIPTION
The SP712X driver’s family provides a simple solution for a matched current source for any
color common cathode LEDs. The common cathode connection allows the user to increase the
led power dissipation by having the cathodes heat sinked to the ground plane of the circuit
board. The SP7120 may drive two LEDs or one LED at twice the current with two channels
connected in parallel. The factory preset current values of 15mA (version A), 20mA (version B),
or 25mA (version C) per channel. The SP7122 has three channels with factory preset current
values of 15, 20, or 25mA and may drive three LEDs or one LED at three-times the current with
all channels connected in parallel. At shutdown mode (EN pin is LOW) the supply current drops
to .04uA typical. The SP712x drivers are available in a small footprint 6-pin SOT23-6 package.
__________________________________________________________ BOARD SCHEMATIC
SP7120 Eval Board Schematic
Evaluation Board Manual
• LED Driver for common cathode parallel
connected LEDs
• Ultra Low Dropout Voltage of 150mV
• No EMI, no switching noise
• Integrated current matching
• PWM and Analog brightness control
• Enable/Shutdown control
• Shutdown current < 1µA
• Small footprint SOT23-6 Package
Solved by
TM
