MCP1640 & MCP1624/3 Voltage Boost Regulators Advanced Performance and Integration with Industry Leading Low Power Summary Battery powered applications have historically been a versatile market lending itself to a multitude of products in consumer, medical, personal care and entertainment. These products have the common need for intelligent control, low power and maximized battery life, and trends have emphasized the need for minimal size, portability and reduced weight. Whether it is an electric shaver, digital music player, camera or a flashlight – all of these products are shrinking but are typically limited in size by the need for two or more batteries. Therefore the ability to operate a MCU with a single battery becomes increasingly valuable to a growing number of applications. The MCP1640/1624/1623 Synchronous Boost Regulators bring low voltage support to any PIC®microcontroller providing a flexible and customizable solution to any single cell or low voltage application. Featuring a start-up voltage of 0.65V and an operating voltage down to 0.35V, the MCP1640/1624/1623 regulators reduce the number of batteries needed in a typical design – even enabling designs to be powered from a single Alkaline, NiMh, NiCd or disposable Lithium battery cell. The MCP1640/1624/1623 Synchronous Boost Regulators extend battery life with up to 96% typical efficiency, shutdown current of less than one micro Ampere in all states and a true load-disconnect shutdown. These devices have an operating input voltage of 0.35 to 5.5V and an adjustable output voltage range of 2.0 to 5.5V. In reducing the number of batteries required, the MCP1640/1624/1623 regulators enable more environmentally friendly designs, with reduced shipping burden and operating costs. All devices include over-temperature protection and provide 500 kHz PWM operation, enabling the use of smaller coils. Unlike competitive low voltage microcontrollers that provide limited and fixed product options, the MCP1640/1624/1623 provides low voltage support to any PIC microcontroller for ultimate system flexibility. These regulators ultimately enable designers to reduce the size and number of batteries without increasing costs. Key Advantages ■ Low voltage support to any application ■ Can be paired with any PIC microcontroller for true system flexibility ■ Minimizes application size – Small, Portable, Lightweight Key Features ■ Up to 96% Typical Efficiency ■ 800 mA Typical Peak Input Current (MCP1640): ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ – IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT – IOUT > 350 mA @ 2.4V VIN, 3.3V VOUT – IOUT > 350 mA @ 3.3V VIN, 5.0V VOUT 425 mA Typical Peak Input Current (MCP1624/3): – IOUT > 50 mA @ 1.2V VIN, 3.3V VOUT – IOUT > 175 mA @ 2.4V VIN, 3.3V VOUT – IOUT > 175 mA @ 3.3V VIN, 5.0V VOUT Low Start-up Voltage: 0.65V Operating Input Voltage: 0.35V to 5.5V Adjustable Output Voltage Range: 2.0V to 5.5V Maximum Input Voltage ≤ VOUT < 5.5V Automatic PFM/PWM Operation – PWM Operation at 500 kHz Low Quiescent Current: – 19 μA in PFM mode Internal Synchronous Rectifier Internal Compensation Inrush Current Limiting and Internal Soft-Start True Load Disconnect (MCP1640/40B/1624/1623) Input to Output Bypass (MCP1640C/40D) Shutdown Current (All States): < 1 μA Low Noise with Anti-Ringing Control Over-temperature Protection ■ Enables single cell battery applications – Fewer batteries – Reduced shipping burden, lighter weight and environmentally friendly ■ Allows use with a single virtually drained battery ■ Enables energy harvesting (i.e. solar cells) Microchip Technology Incorporated Additional Information MCP1623/4 Low-Voltage Boost Regulator Circuit Diagram SW PIC® MCU VIN MCP1624 GND MCP1640/B/C/D Data Sheet, DS22234 MCP1623/24 Data Sheet, DS41420 Single Cell Input Boost Converter Design, AN1311 MCP1640 Synchronous Boost Converter Evaluation Board User’s Guide, DS51880 ■ 8-bit PIC Microcontroller Solution Brochure, DS39630 ■ Corporate Focus Product Selector Guide, DS01308 ■ Quick Guide to Microchip Development Tools Brochure, DS51894 Analog I/O VDD VOUT ■ ■ ■ ■ VSS EN VFB Comms VSS VSS VSS VSS Sample/Purchasing Information VSS ■ On-line Sampling: sample.microchip.com ■ On-line Purchasing: www.microchipdirect.com VSS © 2010 Energizer. Energizer and other marks are trademarks owned by Energizer. MCP1640 & MCP1624/23 Voltage Boost Regulators MCP1623 MCP1624 MCP1640 MCP1640B MCP1640C MCP1640D PWM PWM/PFM PWM/PFM PWM PWM/PFM PWM >50 mA >50 mA >100 mA >100 mA >100 mA >100 mA ±7.4% ±7.4% ±3% ±3% ±3% ±3% 370-630 370-630 425-575 425-575 425-575 425-575 Shutdown True Load Disconnect True Load Disconnect True Load Disconnect True Load Disconnect Input to Output Bypass Input to Output Bypass Packages SOT23-6 SOT23-6 SOT23-6 2x3 DFN-8 SOT23-6 2x3 DFN-8 SOT23-6 2x3 DFN-8 SOT23-6 2x3 DFN-8 Lowest Cost Lower Voltage Ripple Lowest Cost Lower Quiescent Current Highest Performance Highest Performance Highest Performance Highest Performance Mode IOUT @ 1.2V VIN, 3.3V VOUT VOUT Accuracy Switching Frequency (kHz) Key Attributes Development Tools from Microchip Part Number Development Tool Description DM183032 PIC18 Explorer Board Low-cost demonstration board to evaluate PIC18 microcontroller families. MCP1640EV-SBC MCP1640 Evaluation Board Demonstrates the MCP1640 in two boost-converter applications. DM164130-5 F1 + Low Voltage Evaluation Platform Demonstration/development tool for Enhanced Mid-Range PIC microcontrollers (PIC12F1XXX/PIC16F1XXX). DV164131 PICkit™ 3 Debug Express In-Circuit Debugger/Programmer uses in-circuit debugging logic incorporated into each chip with Flash memory to provide a low-cost hardware debugger and programmer. DV164035 MPLAB®ICD 3 In-Circuit Debugger Cost effective high-speed hardware debugger/programmer for Flash PIC MCU and dsPIC Digital Signal Controller (DSC) devices. www.microchip.com/analog Visit our web site for additional product information and to locate your local sales office. Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199 Information subject to change. The Microchip name and logo, the Microchip logo, dsPIC, MPLAB and PIC are registered trademarks and PICkit is a trademark of Microchip Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective companies. © 2010, Microchip Technology Incorporated. All Rights Reserved. Printed in the U.S.A. DS41437A 8/10 *DS41437A*