SP7122

www.DataSheet4U.com SP7120/22 2 or 3 Channel Low Dropout High Side Linear LED Driver FEATURES 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 Lead Free, RoHS Compliant Package: Small footprint SOT23-6 APPLICATIONS Mobile Phones PDA, DSC, MP3 players Handheld Computers Keypads and display backlight GENERAL DESCRIPTION The SP712X driver’s family provides a simple solution for a matched current source for any color common cathode LED configuration. 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 SP7122 can drive three LEDs or one LED at three times the current. The factory preset current values are 15mA (version A), 20mA (version B), or 25mA (version C) per channel. In shutdown mode (EN pin is LOW), the supply current drops to 40nA typical. The SP712x drivers are available in a small footprint 6-pin SOT23-6 package. APPLICATION SCHEMATIC C1 1nF SP7120 Powering 2 LEDs Jun29-07 RevD SP7120/22 Low Dropout LED Driver © 2007 Sipex Corporation page 1 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or an...