ANALOG SPOTLIGHT
MCP1641X
Low IQ Boost Converter With Auto Bypass
General Information
The MCP1641X step-up DC-DC converters family provides an automatic input-to-output
voltage bypass operation which helps 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 either single-cell, two-cell alkaline/NiMH batteries or single-cell
Li-Ion/Li-Polymer batteries. A low-voltage designed architecture allows the regulator to start up
without high inrush current or output voltage overshoot from a low input voltage.
Applications
Features
• Input Voltage Range: 0.8V (after start-up) to 5.25V
• Low device quiescent current: 5 μA typical, PFM mode (not
switching)
• 1A typical peak input current limit:
• Iout > 170 mA @ 2V Vout, 1.2V Vin
• Iout > 200 mA @ 3.3V Vout, 1.5V Vin
• Iout > 450 mA @ 5.0V Vout, 3.6V Vin
• Automatic input-to-output bypass operation
• Selectable switching mode:
• PWM operation: 500 kHz (MCP16412/4/6/8)
• Automatic PFM/PWM operation (MCP16411/3/5/7)
• Programmable UVLO & Low Battery Output (LBO)
• Selectable shutdown states:
• Output discharge option (MCP16411/2/5/6)
• Input-to-output bypass option (MCP16413/4/7/8)
• Shutdown current: 2.3 μA typical
• Package options: 10-lead MSOP and
10-lead 3 mm x 3 mm TDFN
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Personal and health care products
Single-cell or two-cell powered IoT devices
Bluetooth® headsets
Remote controllers, portable instruments
Benefits
• Internal compensation and integrated features reduce
bill of materials and cost
• Soft start feature keeps the inrush current at reasonable levels, which is important in battery-powered
applications
• Low quiescent current and 96% efficiency maximize
battery life and utilization
Total System (Charging) Solutionfor MCP1641x
5V V USB
Micro
USB
MCP1641X
Synchronous Boost Regulator
MCP73830
Charge Management
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MSOP-10 | TDFN 3 mm x 3 mm
The Microchip name and logo and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property
of their respective companies.
© 2020, Microchip Technology Incorporated. All Rights Reserved. 10/20
DS20006444A
www.microchip.com/MCP1641X
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