MCP16252T-I/MNY

The MCP16251/2 is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. This family of devices provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell or three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. Low-voltage technology allows the regulator to start-up without high inrush current or output voltage overshoot from a low-voltage input. High efficiency is accomplished by integrating the low-resistance N-Channel boost switch and synchronous P-Channel switch. All compensation and protection circuitry are integrated to minimize external components. MCP16251/2 operates and consumes less than 14 μA from battery after start-up, while operating at no load (VOUT = 3.3V, VIN = 1.5V). The devices provide a true disconnect from input to output (MCP16251) or an input-to-output bypass (MCP16252), while in shutdown (EN = GND). Both shutdown options consume less than 0.6 μA from battery. Output voltage is set by a small external resistor divider. Two package options, SOT-23, 6-lead and TDFN, 2×3×0.8 mm, 8-lead are available.

Applications

• One, Two and Three-Cell Alkaline and NiMH/NiCd Portable Products
• Solar Cell Applications
• Personal Care and Medical Products
• Bias for Status LEDs
• Smartphones, MP3 Players, Digital Cameras
• Remote Controllers, Portable Instruments
• Wireless Sensors
• Bluetooth Headsets
• +3.3V to +5.0V Distributed Power Supply

Key features

• Up to 96% Typical Efficiency
• 650 mA Typical Peak Input Current Limit
• Low Device Quiescent Current
• Shutdown Current: 0.6 μA typical
• Low Start-Up Voltage: 0.82V, 1 mA load
• Low Operating Input Voltage: down to 0.35V
• Adjustable Output Voltage Range: 1.8V to 5.5V
• Maximum Input Voltage ≤ VOUT < 5.5V
• Automatic PFM/PWM Operation
• Feedback Voltage: 1.23V
• Internal Synchronous Rectifier
• Internal Compensation
• Inrush Current Limiting and Internal Soft Start (1.5 ms typical)
• Selectable, Logic Controlled, Shutdown States
• Anti-Ringing Control
• Overtemperature Protection
• Available Packages: SOT-23, 6-Lead; TDFN, 2×3×0.8 mm, 8-Lead