MIC2145 Datasheet | Micrel Semiconductor

Micrel, Inc. High Efficiency 2.5W Boost Converter General Description Features The MIC2145 is a small size boost switching regulator that can provide over 2.5W of output power. The input voltage range is between 2.4V to 16V, making the device suitable for one-cell Li-Ion and 3- to 4-cell alkaline/Ni Cad/Ni MH applications. The output voltage of the MIC2145 can be adjusted up to 16V. The MIC2145 is well suited for portable, space-sensitive applications. Its typical 450k Hz operation allows small surface mount external ponents to be used. The MIC2145 has a low quiescent current of 200µA, and a typical shutdown current of 0.5µA. The MIC2145 is capable of high efficiencies in a small board area. The MIC2145 Features a low-on resistance internal switch that allows it to provide over 2.5W of output power. The peak switch current can be programmed through an external resistor. This allows the user to set the peak switch current at the level where maximum efficiency occurs. It also allows the user to further optimize for efficiency and inductor size by setting the peak current below the level of inductor saturation. - 2.4V to 16V input voltage - Output adjustable to 16V - Programmable peak current limit - Soft start - Up to 450k Hz switching frequency - 0.5µA shutdown current - 200µA quiescent current - Capable of 5V/ 500m A output with 3.3V input - Achieves over 85% efficiency - Implements low power BOOST, SEPIC, and FLYBACK topologies - MSOP-8 and 3mm×3mm MLF™-10L Applications - Flash LED driver - LCD bias supply - White LED driver - DSL bias supply - Local 3V to 5V conversion The MIC2145 is available in an MSOP-8 and 3mm×3mm MLF™-10L package with an ambient operating temperature range from - 40°C to +85°C. Ordering Information Part Number Standard Pb-Free...