Datasheet Microchip MIC2185 — Datenblatt

MIC2185 Micrel, Inc. MIC2185
Low Voltage Synchronous Boost PWM Control IC General Description Features Micrel’s MIC2185 is a high efficiency synchronous boost
PWM control IC. With its wide input voltage range of 2.9V to
14V, the MIC2185 can be used to efficiently boost voltages
in 1-or 2-cell Li Ion battery powered applications, as well as
п¬Ѓxed 3.3V and 5V systems. Its powerful 5О© output drivers
allow the MIC2185 to supply large output currents with the
selection of the proper external MOSFETs.
With it’s fixed frequency PWM architecture, and easily
synchronized drive, the MIC2185 is ideal for noise-sensitive telecommunications applications. The nominal 400kHz
operating frequency of the MIC2185 can be divided by two,
allowing the device to be externally synchronized to frequencies below 400kHz.
The MIC2185 also features a low current shutdown mode
and a programmable undervoltage lockout. A skipped pulse
mode of operation can be manually set to achieve higher
efficiencies at light load conditions.
The MIC2185 is available in a 16 pin SOIC package and 16
pin QSOP package with an ambient temperature operating
range from –40°C to 85°C. Input voltage range: 2.9V to 14V
95% efficiency
Oscillator frequency of 200kHz/400kHz
Frequency sync to 600kHz
0.5ВµA shutdown current …