MCP1623/24
Low-Voltage Input Boost Regulator
for PICВ® Microcontrollers
Features General Description Up to 96% Typical Efficiency 425 mA Typical Peak Input Current Limit:
-IOUT > 50 mA @ 1.2V VIN, 3.3V VOUT
-IOUT > 175 mA @ 2.4V VIN, 3.3V VOUT
-IOUT > 175 mA @ 3.3V VIN, 5.0V VOUT Low Start-Up Voltage: 0.65V, 3.3V VOUT @ 1 mA
(typical) Low Operating Input Voltage: 0.35V, typical
3.3VOUT @ 1 mA Adjustable Output Voltage Range: 2.0V to 5.5V Maximum Input Voltage п‚Ј VOUT < 5.5V Automatic PFM/PWM Operation (MCP1624) PWM-Only Operation (MCP1623) PWM Operation: 500 kHz Low Device Quiescent Current: 19 ВµA, typical
PFM Mode Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft Start True Load Disconnect Shutdown Current (All States): <1 ВµA Low Noise, Anti-Ringing Control Overtemperature Protection Available Packages:
-6-Lead SOT-23
-8-Lead 2 x 3 DFN The MCP1623/24 is a compact, high-efficiency,
fixed-frequency,
synchronous
step-up
DC-DC
converter. It provides an easy-to-use power supply
solution for PICВ® microcontroller applications powered
by either single-cell, two-cell, or three-cell alkaline,
NiCd, NiMH, and single-cell Li-Ion or Li-Polymer
batteries. Applications One, Two and Three-Cell Alkaline and NiMH/NiCd
Low-Power PICВ® Microcontroller Applications Low-voltage technology allows the regulator to start up
without high inrush current or output voltage overshoot …