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Overview
The MCP16251 Single Cell Boost Converter With External UVLO Reference Design provides an example of how to optimize applications powered from a single AA cell battery by incorporating a ultra low power external under-voltage lockout circuit with hysteresis.
The converter will not (re)start if the battery voltage is lower than 1.14V and will stop working if the battery voltage drops below 0.83V. The external ULVO circuit drains approximately 0.1-0.4 μA before start-up and 1 -2uA after start-up.
The converter will not (re)start if the battery voltage is lower than 1.14V and will stop working if the battery voltage drops below 0.83V. The external ULVO circuit drains approximately 0.1-0.4 μA before start-up and 1 -2uA after start-up.
• Input voltage: one AA Primary or rechargeable battery
• Output voltage: 3.3V
• Output current: < 125 mA
• Typical Efficiency: Up to 96%
• Start-up voltage: 1.15V
• Shutdown voltage: 0.83V
• Automatic PFM/PWM operation
• PWM switching frequency: 500 kHz
• UVLO Quiescent current before start-up: 0.1-0.4 uA
• UVLO Quiescent current after start-up: 1-2 uA
• Output voltage: 3.3V
• Output current: < 125 mA
• Typical Efficiency: Up to 96%
• Start-up voltage: 1.15V
• Shutdown voltage: 0.83V
• Automatic PFM/PWM operation
• PWM switching frequency: 500 kHz
• UVLO Quiescent current before start-up: 0.1-0.4 uA
• UVLO Quiescent current after start-up: 1-2 uA
MCP16251 Single Cell Boost Converter With External UVLO Reference Design board (ARD00797).
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Documentation
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| MCP16251 One-Cell Boost Converter with External UVLO Circuit Reference Design | User Guide | Download | ||
| MCP16251 Single Cell Boost With Ext UVLO (ARD00797) BOM | Board Design Files | Download | ||
| MCP16251 Single Cell Boost With Ext UVLO (ARD00797) Gerbers | Board Design Files | Download | ||
| MCP16251 Single Cell Boost With Ext UVLO (ARD00797) Schematics | Board Design Files | Download | ||
| MCP16251/MCP16252 Data Sheet | Data Sheets | Download |