General Description
●The MIC2287C is a 1.2MHz pulse width modulated (PWM), boost-switching regulator that is optimized for constant-current, white LED driver applications. With a maximum output voltage of 37V and a switch current of over 500mA, the MIC2287C easily drives a string of up to 6 white LEDs in series, ensuring uniform brightness and eliminating several ballast resistors.
●Features
●• 2.5V to 10V input voltage
●• Output voltage up to 34V
●• Over 500mA switch current
●• 1.2 MHz PWM operation
●• 95mV feedback voltage
●• Output Overvoltage Protection (OVP)
●• Options for 15V, 24V, and 34V OVP
●• Over-temperature protection
●• UVLO
●• Low profile Thin SOT-23-5 package option
●• 8-lead 2mm × 2mm MLF™ package option
●• –40°C to +105°C junction temperature range
●• For higher performance specifications see the MIC2287
●Applications
●• White LED driver for backlighting:
● - Cell phones
● - PDAs
● - GPS systems
● - Digital cameras
● - MP3 players
● - IP phones
●• LED flashlights
