Datasheet Microchip MIC2290 — 数据表

MIC2290
2mm Г— 2mm PWM Boost Regulator
with Internal Schotty Diode General Description Features The MIC2290 is a 1.2MHz, PWM, boost-switching
regulator housed in the small size 2mm Г— 2mm 8-pin MLFВ®
package. The MIC2290 features an internal Schottky diode
that reduces circuit board area and total solution cost. High
power density is achieved with the MIC2290’s internal
34V/0.5A switch, allowing it to power large loads in a tiny
footprint.
The MIC2290 implements a constant frequency 1.2MHz
PWM control scheme. The high frequency operation saves
board space by reducing external component sizes. The
fixed frequency PWM topology also reduces switching
noise and ripple to the input power source.
The MIC2290’s wide 2.5V to 10V input voltage allows
direct operation from 3-to 4-cell NiCad/NiMH/Alkaline
batteries, 1-and 2-cell Li-Ion batteries, as well as fixed
3.3V and 5V systems.
The MIC2290 is available in a low-profile 2mmГ—2mm 8-pin
MLFВ® leadless package and operates from a junction
temperature range of –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com. Internal Schottky diode …