DS2714K Maxim Integrated, DS2714K Datasheet

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DS2714K

Manufacturer Part Number
DS2714K
Description
Power Management IC Development Tools
Manufacturer
Maxim Integrated
Series
DS2714r
Datasheet
1.DS2714K.pdf (4 pages)
19-4839; Rev 8/09
DS2714EVKIT+
Quad Loose-Cell NiMH Charger
Evaluation Kit
www.maxim-ic.com
INTRODUCTION
The DS2714 evaluation kit (EV kit) displays all features of the DS2714 NiMH charger. The board is set up to be
used with an external current source as the charge supply. The fast-charge timeout is set for 2.5hrs. DMSEL is
floating, and V
is set to approximately 296mV.
CTST
CONNECTIONS
GND should be connected to a common ground between VDD and VCHG. VDD supplies power to the DS2714 and
LEDs. VCHG supplies the current for charging the cells. VDD and VCHG must be separate supplies. The loading
of VCHG causes the voltage to drop out, resulting in a reset of the DS2714 if one supply is used to power both the
DS2714 and VCHG.
ORDERING INFORMATION
PART
TYPE
DS2714EVKIT+
EV Kit
+Denotes lead(Pb)-free and RoHS compliant.
EVALUATION BOARD SCHEMATIC
1 of 4

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DS2714K Summary of contents

Page 1

Rev 8/09 www.maxim-ic.com INTRODUCTION The DS2714 evaluation kit (EV kit) displays all features of the DS2714 NiMH charger. The board is set used with an external current source as the charge supply. The fast-charge timeout is ...

Page 2

SUPPLY CONNECTION DIAGRAM FAST CHARGE TIME AND TOP-OFF TIME ADJUSTMENT Fast Charge and Top-Off time are controlled by the external resistor R21. Resistors can be selected to support Fast Charge timeout periods of 0.5hrs to 10hrs. Top-Off charge timeout is ...

Page 3

CELL TEST VOLTAGE VALUE CTST values should be selected based on cell impedance and charge rate. You will want to select a CTST value that will allow the DS2714 to reject an Alkaline cell but charge an empty NiMH. The ...

Page 4

... DATE 8/09 Changed the ordering part number from DS2714K to DS2714EVKIT+. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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