Microchip Technology MIC2293-15YML-TR

Description
The MIC2292 and MIC2293 are high-frequency, Pulse Width Modulator (PWM) boost regulators designed for constant-current, white LED driver applications. Their constant PWM switching frequencies of 1.6MHz and 2MHz, respectively, allow for the use of small external components, avoiding sensitive IF bands in RF applications.
These products feature an internal Schottky diode and two levels of output overvoltage protection, enabling a compact and efficient DC/DC solution with only four external components. The 2.5V to 10V input voltage range allows direct operation from 1- and 2-cell Li-ion as well as 3- to 4-cell NiCad/NiMH/Alkaline batteries.

Features
Input voltage range: 2.5V to 10V
Output voltage up to 34V
Internal Schottky diode
PWM operation frequencies: 1.6MHz (MIC2292), 2.0MHz (MIC2293)
Stable with ceramic capacitors
Output overvoltage protection options: 15V and 34V
500mA switch current rating
95mV feedback voltage
<1% line and load regulation
<1μA shutdown current
Over-temperature protection
UVLO
8-pin (2mm x 2mm) MLF package
Junction temperature range: -40°C to 125°C

Applications
White LED driver for backlighting in:
Cell phones
PDAs
GPS systems
Digital cameras
MP3 players
IP phones
Constant-current power supplies