MIC2224 Overview
The MIC2224 is a high efficiency 2MHz PWM synchronous buck switching regulator optimized for powering 2.5G and 3G CDMA RF Power Amplifiers. The output voltage of MIC2224 can be dynamically adjusted with an external DAC to maximize PA efficiency versus required output power. When the PA requires the highest power, the DAC can be used to enable a low on-resistance, 40mΩ, bypass switch that powers the PA directly from...
MIC2224 Key Features
- 2.7V to 5.5V input voltage range
- DAC-adjustable output voltage down to 0.3V
- 600mA output current in PWM mode
- Internally protected 40mΩ bypass switch
- Allows direct connection of battery to load
- Over 95% efficient
- Fully integrated MOSFET switches
- Constant 2MHz PWM operation
- Internal soft-start
- 1% line and load regulation
MIC2224 Applications
- 2.7V to 5.5V input voltage range
- DAC-adjustable output voltage down to 0.3V
- 600mA output current in PWM mode