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MCP16251 Datasheet(PDF) 1 Page - Microchip Technology |
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MCP16251 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 32 page  2013 - 2016 Microchip Technology Inc. DS20005173B-page 1 MCP16251/2 Features • Up to 96% Typical Efficiency •650 mA Typical Peak Input Current Limit: -IOUT > 100 mA @ 3.3V VOUT, 1.2V VIN -IOUT > 250 mA @ 3.3V VOUT, 2.4V VIN -IOUT > 225 mA @ 5.0V VOUT, 3.3V VIN • Low Device Quiescent Current: - Output Quiescent Current: < 4 µA typical, device is not switching (VOUT > VIN, excluding feedback divider current) - Input Sleep Current: 1 µA - No Load Input Current: 14 µA typical • 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 V OUT < 5.5V • Automatic PFM/PWM Operation: - PWM Operation: 500 kHz - PFM Output Ripple: 150 mV typical • 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: - True Load Disconnect Option (MCP16251) - Input-to-Output Bypass Option (MCP16252) • Anti-Ringing Control • Overtemperature Protection • Available Packages: - SOT-23, 6-Lead - TDFN, 2 x 3 x 0.8 mm, 8-Lead Package Types 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 General Description 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 x 3 x 0.8 mm, 8-lead are available. MCP16251/2 2x3x0.8 TDFN* PGND SGND EN VOUTS VOUTP 1 2 3 4 8 7 6 5 SW VIN VFB EP 9 4 1 2 3 6 VIN VFB SW GND EN 5 VOUT MCP16251/2 6-Lead SOT-23 * Includes Exposed Thermal Pad (EP); see Table 3-1. Low Quiescent Current, PFM/PWM Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option |
Similar Part No. - MCP16251_16 |
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Similar Description - MCP16251_16 |
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