MCP1640-I/MC Microchip Technology, MCP1640-I/MC Datasheet - Page 13

• Manufacturer Part Number: MCP1640-I/MC
• Description: IC CONV DC-DC STEPUP SYNC 8DFN
• Manufacturer: Microchip Technology
• Type: Step-Up (Boost)r

Specifications of MCP1640-I/MC

• Package / Case: 8-DFN
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2 ~ 5.5 V
• Current - Output: 100mA
• Frequency - Switching: 500kHz
• Voltage - Input: 0.8 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Duty Cycle (max): 90 %
• Efficiency: 96 %
• Input / Supply Voltage (max): 0.8 V
• Input / Supply Voltage (min): 0.65 V
• Load Regulation: 0.01 %
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Output Current: 350 mA
• Output Voltage: 5 V
• Switching Frequency: 500 KHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.2
© 2010 Microchip Technology Inc.
GETTING STARTED
The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design is fully
assembled and tested to evaluate and demonstrate the MCP1640 products.
2.2.1
2.2.1.1
The MCP1640 Single Quadruple-A Battery Boost Converter Reference Design is
equipped with an innovative Energizer Battery Holder, which protects against the
reverse insertion of the AAAA alkaline battery. If the battery is inserted correctly, the
board will start in Standby mode. To switch the output ON, press the button S1 for 2
seconds. The output is active for approximately 25 seconds. Pressing the button during
this period will turn OFF the output.
Extra connectors are placed on the top side of board:
• TP1 and TP5 for positive (V
• TP2 and TP3 for negative (GND
These two connectors help engineers power the board from an external power supply.
In this case, the maximum input voltage should not exceed the 3.3V output
(V
greater than or equal to the output voltage.
The output connector is called “OUT”, and is referenced to GND. The maximum output
current is 130 mA when the board is powered by a quadruple-A alkaline battery, which
has a typical capacity of 600 mAh.
2.2.1.2
To test the board, follow the next steps:
1. Insert the quadruple-A battery in its holder, paying attention to respect the
2. Connect a voltmeter and a 47Ω/0.5W resistor, between “OUT” and “–”
3. Press and hold the push-button for approximately 2 seconds. The LED should be
4. The LED will be ON for approximately 25 seconds. During this period, verify the
5. Press and hold the push-button for 2 seconds to verify that power turns ON and
The resistor R9 is not populated. The component pads are provided for experimental
use. The header J3 is also not populated. It can be use to re-program the
microcontroller.
IN
polarity.
connectors, as shown in Figure 2-2.
lit.
presence of 3.3V at “OUT”.
OFF.
< V
OUT
Power Input and Output Connection
POWERING THE MCP1640 SINGLE QUADRUPLE-A BATTERY BOOST
CONVERTER REFERENCE DESIGN
BOARD TESTING
). The output voltage will not remain regulated for input voltages that are
IN
)
)
Installation and Operation
DS51922A-page 13