DS2731K Maxim Integrated, DS2731K Datasheet - Page 2

• Manufacturer Part Number: DS2731K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2731r

Before beginning, the following equipment is needed:
• DS2731 EV Kit Board
• +12V Power Supply
• +3.3V Power Supply
• +4.2V Li+ Battery
• Voltmeter
• Connecting Wires
The following equipment is recommended but not
required:
• Programmable Load (150mA at +1.7V typical)
• Source/Sink Power Supply
1) Connect a +4.2V source/sink supply or a Li+ bat-
DS2731 Evaluation Kit
Figure 1. Quick Start Connection Diagram
2
tery between BAT+ and BAT-.
_______________________________________________________________________________________
12V
Quick Start Sequence
Required Equipment
Optional Equipment
Board Connections
3.3V
2) Connect a +12V supply between VIN and CGND.
3) Connect a +3.3V supply between AUX and CGND.
4) Connect a load between MEM+ and MEM- (option-
5) Verify the regulator output at MEM+/MEM-, which
Caution: Always observe proper ESD precautions
when handling the DS2731 EV kit circuit board.
A valid +12V and +3.3V supply are required for the
charger circuitry to function. The charge current is
drawn directly from the +12V supply. The majority of
the device logic and the buck regulator are powered off
the +3.3V auxiliary supply. These supplies share a
common ground at CGND.
Connect a +4.2V Li+ cell between BAT+ and BAT-. A
source/sink supply can be used for board evaluation
purposes.
ally connect a voltage meter).
should be close to +1.8V with no load.
Supply Connections
Battery Connection
LOAD