The MCP1661T-E/OT is a high-voltage integrated switch PWM Boost Regulator with UVLO. The MCP1661 device is a compact, high-efficiency, fixed-frequency, non-synchronous step-up DC-DC converter which integrates a 36V, 800mR 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 1.3A 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.
- 36V, 800mR Integrated switch
- Up to 92% efficiency
- 1.3A Peak input current limit
- Under-voltage lockout (UVLO)
- 250μA Typical no load input current
- Sleep mode with 200nA typical quiescent current
- VFB = 1.227V Feedback voltage reference
- Cycle-by-cycle current limiting
- Internal compensation
- Inrush current limiting and internal soft start
- Output overvoltage protection (OVP) in the event of feedback pin shorted to GND
- Easily configurable for SEPIC or Flyback topologies
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