MCP1640 & MCP1624/3 Voltage Boost Regulators

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):
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■
■
■
■
■
■
■
■
■
■
■
■
■
■
– 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
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*DS41437A*