MCP16251/2
Low Quiescent Current, PFM/PWM Synchronous Boost Regulator
with True Output Disconnect or Input/Output Bypass Option
Features Applications 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 ВµA typical, пЂ
device is not switching (VOUT > VIN,
excluding feedback divider current)
-Input Sleep Current: 1 ВµA
-No Load Input Current: 14 ВµA typical Shutdown Current: 0.6 ВµA 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 п‚Ј VOUT < 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 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 …