The MIC2202 is a high-efficiency, 2MHz PWM synchronous buck (step-down) regulator manufactured by Micrel (now Microchip Technology). It is designed for portable applications and provides a compact solution for converting battery voltages to lower voltages required by system components.
Applications:
- Portable Devices (Mobile Phones, PDAs)
- Battery-Powered Equipment
- Point-of-Load Regulation
- Power Supplies for Microprocessors
- Set-Top Boxes
Features:
- High Efficiency: Up to 95% efficiency for extended battery life.
- 2MHz PWM Switching Frequency: Allows for small external components.
- Synchronous Rectification: Eliminates the need for an external Schottky diode.
- Low Dropout Operation: Provides stable output voltage even with low input voltage.
- Adjustable Output Voltage: Allows for flexible voltage selection.
- Current Limit Protection: Protects the device and load from overcurrent conditions.
- Thermal Shutdown Protection: Protects the device from overheating.
- Small Package: Enables compact designs.
Benefits:
- Extended Battery Life: High efficiency operation maximizes battery life in portable devices.
- Reduced Component Count: Synchronous rectification eliminates the need for an external diode, reducing BOM cost and board space.
- Stable Output Voltage: Low dropout operation ensures a stable output voltage even with low input voltage.
- Improved System Reliability: Built-in protection features enhance system reliability and prevent damage from electrical faults.
- Smaller Solution Size: High switching frequency allows for the use of smaller external components, resulting in a compact solution.
Technical Specifications: The MIC2202 typically operates with an input voltage range of 2.5V to 5.5V. The output voltage is adjustable from 0.8V to VIN. The device features a current limit protection circuit to prevent overcurrent conditions. The switching frequency is 2MHz, allowing for the use of small external components. The device is available in a small QFN package.
The MIC2202 is a high-performance synchronous buck regulator suitable for a wide range of portable applications. Its high efficiency, compact size, and built-in protection features make it an ideal choice for demanding applications.
