The MCP16311 is a compact, high-efficiency, fixed frequency PWM/PFM, synchronous step-down DC-DC converter in a 8-pin MSOP, or 2 x 3 TDFN package that operates from input voltage sources up to 30V.  Integrated features include a high-side and a low-side switch, fixed frequency Peak Current Mode Control, internal compensation, peak-current limit and overtemperature protection. The MCP16311 provides all the active functions for local DC-DC conversion, with fast transient response and accurate regulation.

• Up to 95% Efficiency
• Input Voltage Range: 4.4V to 30V
• 1A Output Current Capability
• Output Voltage Range: 2.0V to 24V
•  Integrated N-Channel Low and High-Side Switches:
  • 170mΩ, Low Side
  • 300mΩ, High Side
•  Stable Reference Voltage: 0.8V
•  Automatic Pulse Frequency Modulation/Pulse-Width Modulation (PFM/PWM) Operation: PWM Operation: 500 kHz
  • MCP16312 provides PWM-only operation
• Low Device Shutdown Current: 3 μA typical
• Low Device Quiescent Current:
  • 44 μA (non-switching, PFM Mode)
• Internal Compensation
• Internal Soft-Start: 300 μs (EN low to high)
• Peak Current Mode Control
• Cycle-by-Cycle Peak Current Limit
• Undervoltage Lockout (UVLO):
  • 4.1V typical to start
  • 3.6V typical to stop
• Overtemperature Protection
• MSOP-8 or 2x3 TDFN-8 package