The MIC2145 is a high efficiency 2.5W boost converter from Micrel. It is suitable for applications with single-cell Li-Ion batteries and 3-4 cell alkaline/NiCad/NiMH batteries. The MIC2145 supports an input voltage range of 2.4V to 16V and can output up to 16V. The chip operates at 450kHz and supports small external components. It has low static current and high efficiency.
The MIC2145 is a high efficiency boost switching regulator capable of delivering more than 2.5W of output power from an input voltage range of 2.4V to 16V. It features a programmable peak current limit, soft start, and operates with a typical frequency of 450kHz, allowing for small surface mount external components.
| Output Power | over 2.5W |
|---|---|
| Input Voltage Range | 2.4V to 16V |
| Maximum Output Voltage | 16V |
| Switching Frequency | up to 450kHz |
| Shutdown Current | 0.5uA |
| Efficiency | over 85% |
| Operating Temperature Range | -40°C to +85°C |
The device is available in an MSOP-8 and 3mmx3mm MLF™-10L package.
It implements low power BOOST, SEPIC, and FLYBACK topologies.
The peak switch current can be programmed through an external resistor connected to the RSET pin.