MCP1663T-E/OT

The MCP1663T-E/OT is a high-voltage integrated switch PWM Boost Regulator with ultravoltage output (UVLO). The compact high-efficiency fixed-frequency non-synchronous step-up DC-DC converter integrates a 36V/400mΩ NMOS switch. It provides a space-efficient high-voltage step-up power supply solution for applications powered by either two-cell or three-cell alkaline, ultimate lithium, NiCd, NiMH, one-cell Li-ion or li-polymer batteries. The integrated switch is protected by the 1.8A cycle-by-cycle inductor peak current limit operation. There is an output overvoltage protection which turns off switching in case the feedback resistors are accidentally disconnected or the feedback pin is short-circuited to GND. Low-voltage technology allows the regulator to start-up without high inrush current or output voltage overshoot from a low-voltage input. The device features a UVLO which avoids start-up and operation with low inputs or discharged batteries for two cell-powered applications.

• Cycle-by-cycle current limiting
• Internal compensation
• Inrush current limiting and internal soft-start
• Output overvoltage protection (OVP)
• Over-temperature protection
• Easily configurable for SEPIC, Cuk or Flyback topologies
• Sleep mode with 0.3µA typical shutdown quiescent current
• Up to 92% efficiency
• 250µA Typical no load input current
• 1.227V Feedback voltage reference

Applications

Portable Devices, Power Management, Consumer Electronics, Medical