ARD00386 Microchip Technology, ARD00386 Datasheet - Page 13
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ARD00386
Manufacturer Part Number
ARD00386
Description
Power Management Modules MCP1640 12V 50mA Boost Converter
Manufacturer
Microchip Technology
Datasheet
1.ARD00386.pdf
(26 pages)
Specifications of ARD00386
Product
DC-DC Converters / Regulators
Input Voltage Max
5 V
Switching Frequency
500 kHz
Output Voltage
12 V
Output Current
50 mA
Input Voltage Min
2 V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ARD00386
Manufacturer:
MICROCHIP
Quantity:
12 000
2.1
© 2011 Microchip Technology Inc.
INTRODUCTION
Chapter 2. Installation and Operation
The MCP1640 12V/50 mA Two Cells Input Boost Converter Reference Design is
developed to demonstrate how the MCP1640 device can operate as a high output
voltage DC-DC converter when powered from two batteries. This reference design
allows boosting from the input range of 2.0V-5V to an output higher than 5.5V of the
typical MCP1640 application. High-voltage outputs, such as 9V, 12V or 24V, can be
generated from just two alkaline cells.
For this reference design, the output voltage is set at 12V. Typically, a minimum of a
50 mA load can be supported from a 2.0V input. The board can deliver more output cur-
rent (up to 70 mA) if it is powered with 3.0V. A small 3x3x1 mm inductor offers a good
efficiency of up to 75%. Good converter stability is obtained with the B option of
MCP1640 (PWM Mode Only and True Output Disconnect options).
2.1.1
The MCP1640 Input Boost Converter has the following features:
• Input Voltage: Two Alkaline or Lithium Cells, 2.0-3.0V Typical
• Output Capability:
• No Load Input Current: 0.2 mA @ 3.0V Input
• Efficiency: up to 75%
• PWM Operation at 500 kHz
- Supports extended input range of 2.0V-5.0V
- Dependent on the input voltage
- 12V/50 mA typical @ 2.0V input
- 12V/70 mA @ 3.3V input
Board Features
MCP1640 12V/50 mA TWO CELLS
INPUT BOOST CONVERTER
REFERENCE DESIGN
DS51999A-page 13