
Catalog
Low Quiescent Current Synchronous Boost Regulator
Key Features
• * Up to 96% Typical Efficiency
• * IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
• * IOUT > 250 mA @ 2.4V VIN, 3.3V VOUT
• * IOUT > 225 mA @ 3.3V VIN, 5.0V VOUT
• * Low Start-up Voltage: 0.82V
• * 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
• * PWM Operation at 500 kHz
• * Low Device Quiescent Current: <4 µA typical
• * Shutdown Current: 0.6 µA typical
• * Internal Synchronous Rectifier
• * Internal Compensation
• * Inrush Current Limiting and Internal Soft-Start
• * Input to Output Bypass Shutdown
• * True Load Disconnect Shutdown Option (MCP16251)
• * Anti-Ringing Control
• * Over-temperature Protection
• * SOT23-6 or 2x3 8-Lead TDFN packages
Description
AI
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 and one-cell Li-Ion or Li-Polymer batteries.