The MCP1641x family of step-up DC/DC converters from Microchip Technology provides an automatic input-to-output voltage bypass operation, which helps in optimizing battery utilization and achieving high efficiency while fresh batteries’ nominal voltage is in the same range with the converter’s output value. The MCP1641x can be powered by single-cell, two-cell alkaline/NiMH batteries, or single-cell Li-Ion/Li-Polymer batteries. The MCP1641x family introduces an additional safety feature to a low-voltage boost converter: overtemperature output. Devices, such as personal care products, Bluetooth® headsets, or toys, will benefit from combined Power Good and Die Overtemperature (PGT) output, which flags a warning signal when the output voltage level drops with 10% or the die temperature exceeds the 75°C, typically. Both functions are implemented in the MCP16411/2/3/4 devices (on the same pin, PGT), while the MCP16415/6/7/8 devices have the Power Good only option.
Features
- Input voltage range: 0.8 V (after start-up) to 5.25 V
- Low device quiescent current: 4.5 μA typically
- Programmable undervoltage lockout (UVLO)
- Automatic input-to-output bypass operation
- Automatic PFM/PWM operation
- Power Good output
- 1 A typical inductor peak current limit
- Up to 96% efficiency
- Adjustable output voltage range
- Programmable low battery output
- Shutdown state: input-output bypass
- Internal synchronous rectifier
- Internal compensation
- Inrush current limiting and internal soft-start
- Anti-ringing control
- Thermal shutdown
Applications
- Personal and health care products
- Single-cell or two-cell powered IoT devices
- Bluetooth headsets
- Remote controllers, portable instruments
- Wireless sensors, data loggers
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The MCP1641x family of step-up DC/DC converters from Microchip Technology provides an automatic input-to-output voltage bypass operation, which helps in optimizing battery utilization and achieving high efficiency while fresh batteries’ nominal voltage is in the same range with the converter’s output value. The MCP1641x can be powered by single-cell, two-cell alkaline/NiMH batteries, or single-cell Li-Ion/Li-Polymer batteries. The MCP1641x family introduces an additional safety feature to a low-voltage boost converter: overtemperature output. Devices, such as personal care products, Bluetooth® headsets, or toys, will benefit from combined Power Good and Die Overtemperature (PGT) output, which flags a warning signal when the output voltage level drops with 10% or the die temperature exceeds the 75°C, typically. Both functions are implemented in the MCP16411/2/3/4 devices (on the same pin, PGT), while the MCP16415/6/7/8 devices have the Power Good only option.
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