MICROCHIP MCP16312-E/MS DC-DC Buck Regulator, 4.4-30V In, 2-24V Out, 1A, MSOP-8

The MICROCHIP MCP16312-E/MS is a compact, high-efficiency, synchronous step-down DC-DC converter, engineered for reliable local power conversion. Operating from a wide input voltage range of 4.4V to 30V, it provides a flexible, adjustable output from 2V to 24V at up to 1A of current, making it an excellent choice for a variety of voltage regulation tasks.

This regulator integrates all active components, including both the high-side and low-side N-channel power switches and their associated drive circuitry. This high level of integration, combined with a low-resistance switch design, enables exceptional efficiency of up to 95%. The device employs fixed-frequency peak current mode control with internal compensation, ensuring fast transient response and accurate output regulation without the need for external compensation components.

For optimal performance across different loads, the related MCP16311 variant operates in automatic PFM/PWM mode, switching to pulse frequency modulation under light loads for higher efficiency. In contrast, the MCP16312 runs exclusively in pulse-width modulation (PWM) mode, which is recommended for noise-sensitive applications due to its constant switching frequency.

Robust protection features are built in to safeguard the IC and your design. These include cycle-by-cycle peak current limiting, under-voltage lockout (UVLO), and over-temperature protection. An internal soft-start function (300μs from enable) manages inrush current during start-up. The device also boasts an ultra-low 0.8V stable reference voltage and minimal quiescent current, drawing as little as 3μA in shutdown and 44μA in non-switching PFM mode, which is critical for battery-powered applications.

Key Specifications:

• Input Voltage Range: 4.4V - 30V DC
• Adjustable Output Voltage Range: 2V - 24V DC
• Maximum Output Current: 1A
• Topology: Synchronous Buck (Step-Down)
• TypicalSw itc|