Microchip MCP1252-33X50I/MS Charge Pump, 120mA, MSOP8 SMD

The Microchip MCP1252-33X50I/MS is a sophisticated, inductor less, positive-regulated charge pump DC/DC converter. Engineered for high efficiency and low-noise operation, it generates a regulated fixed output voltage of 3.3V or an adjustable voltage, catering to diverse power management needs. Capable of delivering up to 120mA output current, its innovative design allows the input voltage to be either lower or higher than the output voltage by automatically switching between buck and boost modes.

Operating at a high switching frequency of 650kHz helps avoid interference with intermediate frequency (IF) bands, making it suitable for sensitive electronic applications. The device incorporates multiple protection and control features for robust and reliable performance, including short-circuit protection, thermal shutdown with hysteresis, and soft-start circuitry to minimise inrush current during power-up.

For system control and monitoring, it features logic-level shutdown control to reduce standby current consumption to a mere 0.1µA, and a power-good output indicator that reports out-of-regulation conditions. With a low 60µA supply current under no-load conditions and a high voltage accuracy of 2.5% on fixed outputs, it ensures efficient and precise power delivery.

Key Specifications & Features

• Output Current: Up to 120mA
• Fixed Output Voltage: 3.3V nominal
• Input Voltage Range: 2V to 5.5V
• Topology: Automatic Buck/Boost
• Switching Frequency: 650kHz
• Shutdown Current: 0.1µA (standby)
• No-Load Supply Current: 60µA
• Voltage Accuracy: 2.5% (fixed output)
• Protection: Short-circuit, Thermal shutdown, Soft-start
• Control/Monitoring: Power-good indicator, Logic shutdown
• Mounting: Surface Mount (SMD)
• Package: MSOP-8

This charge pump is an ESD-sensitive device, so proper ESD