Microchip MCP16368

Description

The MCP16367/8/9 family of devices are highly integrated, high-efficiency, fixed-frequency, step-down DC-DCconverters in a compact 8-lead 3 mm x 3 mm VDFN package that operates from input voltage sources upto 48V. Integrated features include a high-side switch, fixed-frequency Peak Current Mode Control, InternalCompensation, Power Good, Peak Current Limit and Overtemperature Protection. The MCP16367/8/9 providesall the active functions for local DC-DC conversion with fast transient response and accurate regulation.High efficiency conversion is achieved by integrating the current-limited, high-speed N-Channel MOSFET andassociated drive circuitry. High switching frequency minimizes the size of the external filtering componentsresulting in a small size solution.The MCP16367/8/9 can supply 400 mA of continuous current while regulating the output voltage from 2.0V to24V. An integrated, high-performance peak current mode control architecture keeps the output voltage tightlyregulated, even during input voltage steps and output current transient conditions that are common in powersystems.The MCP16367 is capable of running in PFM/PWM mode. It switches in PFM mode for light load conditions andfor large step-down conversion ratios. This results in a higher efficiency over all load ranges.

Features

• Input Voltage Range: 4.0V (After Start-Up) to 48V
• Adjustable Output Voltage Range: 2.0V to 24V
• Integrated N-Channel Buck Switch: 500 mΩ
• 400 mA Output Current
• 2.2 MHz Fixed Switching Frequency
• Shutdown Current: 3 μA Typical
• Quiescent Current: 18 μA Typical (Not Switching)
• Device Selectable Switching Mode:– Automatic Pulse Frequency Modulation/Pulse Width Modulation (PFM/PWM) Operation - MCP1636748V Input, 400 mA Output, 2.2 MHz Switching Frequency,Integrated Switch Step-Down RegulatorMCP16367/8/9MCP16367/8/9Data Sheet© 2025 Microchip Technology Inc. and its subsidiariesDS20006970A - 2– PWM only Mode of Operation - MCP16368– PWM only Mode of Operation with Switching Frequency Dithering for EMI constrained applications -MCP16369
• Power Good Output
• Undervoltage Lockout (UVLO)
• Peak Current Mode Control
• Internal Compensation
• Internal Soft-Start
• Internal Bootstrap Diode
• Cycle-By-Cycle Peak Current Limit
• Overtemperature Protection
• Available Package: 8-Lead 3 mm x 3 mm Wettable Flanks VDFN (see Package)
• AEC-Q100 Automotive Qualified, see Product Identification System

Typical applications

• Automotive DC/DC; Industrial 24V DC/DC

More information

• Datasheet
• IC product information