MCP1623T-I/CHY Maximum Output Current, Microchip MCP1623T-I/CHY, Boost Regulator 50mA Adjustable, 630 kHz 6-Pin, SOT-23

MCP1623/1624 Synchronous Boost Converter
The Microchip MCP1623 and MCP1624 are Adjustable, Fixed Frequency, Synchronous Step-Up DC-DC Converters. Primarily they are designed to offer a compact and highly efficient power supply solution for PIC Microcontrollers in one-, two- and three-cell battery powered applications. The desired output voltage of the device is set by the application of a small external resistor divider.The design allows the regulator to start up without high inrush current or output voltage overshoot from a low 0.65 V input. Combined is a low-resistance N-Channel Boost Switch and Synchronous P-Channel Switch to offer high efficiency. All compensation and protection circuitry is integrated into the device to minimise the required external components.Also featured is a Load Disconnect mode that provides input to output isolation while disabled. This mode consumes less than 1 μA of input current.
Features
Up to 96% Typical Efficiency425 mA Typical Peak Input Current LimitLow Start Up Voltage: 0.65 V (typical) @ 3.3 V VsuOUT/su, 1 mALow Operating Input Voltage: 0.35 V (typical) @ 3.3 V VsuOUT/su, 1 mAAdjustable Output Voltage Range: 2.0 V to 5.5 VAutomatic PFM/PWM Operation – MCP1624 model onlyPWM-only Operation – MCP1623 model only500 kHz PWM FrequencyLow Device Quiescent Current: 19 μA (typical, PFM mode)Internal Synchronous RectifierInternal CompensationInrush Current Limiting and Internal Soft-StartTrue Load DisconnectShutdown Current: 1 μALow Noise, Anti-Ringing ControlOver-temperature Protection