MCP1650DM-DDSC1 Microchip Technology, MCP1650DM-DDSC1 Datasheet - Page 13

• Manufacturer Part Number: MCP1650DM-DDSC1
• Description: BOARD DEMO FOR MCP1650 SEPIC
• Manufacturer: Microchip Technology
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of MCP1650DM-DDSC1

• Main Purpose: DC/DC, Step Up or Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 5V
• Current - Output: 160mA
• Voltage - Input: 3 ~ 7V
• Regulator Topology: Boost
• Frequency - Switching: 750kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MCP1650
• Input Voltage: 3 V to 7 V
• Output Voltage: 5 V
• Product: Power Management Modules
• For Use With/related Products: MCP1650R-E/MS
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Installation and Operation
2.3.2
Evaluating the Application
The MCP1650 SEPIC Demo Board can be used to provide a low-cost, minimal size,
low-power bias circuit. A well-regulated 5V at 160 mA output is produced from a 3.0V
to 7.0V input source. This voltage range allows the source to be a single Li-Ion battery
or three to four NiMH batteries.
The SEPIC topology is employed to convert this wide-ranging input source to a
well-regulated 5 volts. The SEPIC has the ability to automatically buck or boost the
input source. By coupling the two inductors onto one magnetic core, a small footprint,
low parts-count, low-power step-up or step-down converter is developed.
To truly evaluate the effectiveness of the MCP1650 SEPIC Demo Board, the input volt-
age must be varied over the entire operating range, while the load is varied from 0A to
160 mA. Test points are provided for connecting the variable input voltage source (TP1
and TP2) and a variable load (TP4 and TP5). An additional test point (TP3) is con-
nected to the shutdown pin (SHDN) of the MCP1650. On the board, the SHDN pin is
pulled-up to V
. However, by connecting TP3 to GND, the converter can be disabled.
IN
© 2005 Microchip Technology Inc.
DS51581A-page 9