ARD00386

The ARD00386 is a MCP1640 12V/50mA two cells input boost converter reference design to demonstrate the MCP1640 device’s high voltage boost capability above its typical output range of 5.5V. The MCP1640 device is a compact, high efficiency, fixed frequency, step up DC to DC converter. It provides an easy to use power supply solution, with a minimum number of external components. This device is running in PWM mode only and is ideal for noise sensitive applications. It has a low quiescent current, a wide input voltage range (0.35 to 5.5V) and a low start up voltage (0.65V at 1mA load current). The MCP1640 device consumes less than 1uA in shutdown mode. This board boosts the low voltage input to 12V and up to 70mA load. By changing specific resistors, a lower/higher output than 12V can be obtained. The MCP1640 input boost converter was developed to help engineers reduce product design cycle time. At 2.0V input and 12V output, the board is capable of a maximum of 50mA load current.

• Input voltage by 2 alkaline or lithium cells 2V to 3V typ, supports extended input range of 2V to 5V
• Output capability 12V/50mA typical at 2V input, 12V/70mA at 3.3V input
• No load input current 0.2mA at 3V input
• Efficiency up to 75%
• PWM operation at 500KHz

Applications

Power Management, Portable Devices, Medical, Wireless, Sensing & Instrumentation, Communications & Networking