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Overview
The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design demonstrates how the MCP1640 device, with the True Output Disconnect Shutdown option, works attached to a microcontroller application. This board demonstrates how to optimize battery life using the MCP1640, and an 8-bit low cost PIC microcontroller, to reduce the No Load Input Current for applications that operate in Standby mode for a long period of time. During Standby, the enable signal for the MCP1640 has a low frequency, with less than 1% positive duty cycle. This maintains the output of the MCP1640 device up to 2.3V, which is sufficient to keep the PIC microcontroller live. This solution reduces up to 80% of the No Load Input Current the MCP1640 consumes in PFM Mode.
- Input voltage: one AAAA Alkaline battery
- Output voltage: 3.3V
- Output current: < 130 mA
- Up to 75% efficiency
- Standby battery current: 14.5 μA @ 1.5V input
- Start-up voltage: 0.65V at VIN = 1.2V, VOUT = 3.3V and IOUT = 1 mA, resistive load
- Automatic PFM/PWM operation
- PWM Switching Frequency = 500 kHz
- ON/OFF switch button, with 25 seconds ON
- LED status indication (Output ON and Low Battery)
- Energizer® Battery Holder with reverse battery protection
The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design demonstrates how the MCP1640 device, with the True Output Disconnect Shutdown option, works attached to a microcontroller application. This board demonstrates how to optimize battery life using the MCP1640, and an 8-bit low cost PIC microcontroller, to reduce the No Load Input Current for applications that operate in Standby mode for a long period of time. During Standby, the enable signal for the MCP1640 has a low frequency, with less than 1% positive duty cycle. This maintains the output of the MCP1640 device up to 2.3V, which is sufficient to keep the PIC microcontroller live. This solution reduces up to 80% of the No Load Input Current the MCP1640 consumes in PFM Mode.
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Documentation
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| MCP1640 Single Quadruple-A Battery Boost Converter Reference Design | User Guide | Download | ||
| MCP1640 Quad A Reference Design Gerbers | Board Design Files | Download | ||
| MCP1640 Quad A Reference Design Firmware | Software Libraries and Firmware | Download | ||
| Optimizing Battery Life in DC Boost Converters Using MCP1640 | Application Notes | Link | Download |