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ARD00797 - 

Reference Design, MCP16251 Single Cell Boost Converter, External UVLO, Automatic PFM/PWM Operation

ARD00797 - Reference Design, MCP16251 Single Cell Boost Converter, External UVLO, Automatic PFM/PWM Operation

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製造商產品編號:
ARD00797
訂購代碼:
2764487

產品總覽

The ARD00797 from Microchip is a MCP16251 single cell boost converter with external UVLO reference design. The MCP16251 device is a compact, high efficiency, fixed frequency, synchronous step-up DC to DC converter. The very low quiescent current makes it ideal for battery-powered applications. This reference design provides an example of how to optimize applications powered from a single AA cell battery by incorporating a ultra low power external undervoltage 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 to 0.4µA before start-up and 1 to 2µA after start-up.
  • Input voltage: one AA primary or rechargeable battery
  • Output voltage is 3.3V, output current is less than 125mA
  • Typical efficiency up to 96%
  • Start-up voltage is 1.15V
  • Shutdown voltage is 0.83V
  • Automatic PFM/PWM operation
  • PWM switching frequency is 500KHz

應用

Power Management

內容

MCP16251 one cell boost converter with external UVLO circuit (ARD00797), Important information sheet.

警告

Care must be taken when powering the board from an external supply.

產品訊息

:
Microchip
:
MCP16251
:
Power Management - Voltage Regulator
:
Synchronous Boost Converter
:
Eval Board MCP16251, Information Sheet
:
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:
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