DS2714 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Quad Loose Cell NiMH Charger

www.maxim-ic.com
GENERAL DESCRIPTION
The DS2714 is ideal for standalone charging of 1 to 4
AA or AAA NiMH “loose” cells. NiCd cells can also be
charged. Temperature, voltage and charge time are
monitored to provide proper fast charging control
algorithms for Nickel Metal Hydride (NiMH) batteries.
Battery tests are included to detect defective or
inappropriate cells such as Alkaline primary batteries.
The DS2714 supports a parallel charging topology,
with independent monitoring and control of each cell.
APPLICATIONS
Desktop/Standalone Chargers (AAA/AA)
Digital Still Cameras
Music Players
Games
Toys
CHARGE TOPOLOGY
Controlled
Current
Source
4-Cell NiMH Charger
DS2714
GND
DS2714
Quad Loose Cell NiMH Charger
FEATURES
§ Charges 1 to 4 NiMH Cells
§ Detects and Avoids Charging Alkaline Cells
§ Pre-Charges Deeply Depleted Cells
§ Fast Charges NiMH with -DV Termination
Sensitivity of 2mV (typ)
§ Monitors Voltage, Temperature and Time for
Safety and Secondary Termination
§ Works with Regulated Charge Current Source
§ Drives PNP Type Pass Element
§ Compatible with Integrated Primary-Side PWM
Controllers
§ 20-pin TSSOP Package
ORDERING INFORMATION
PART
MARKING
PIN-PACKAGE
DS2714E+
DS2714 20 TSSOP
DS2714E+T&R DS2714 20 TSSOP Tape-and-Reel
+ Denotes lead-free package.
PIN CONFIGURATION
CC1 1
CC2 2
CC3 3
CC4 4
LED1 5
LED2 6
VSS 7
LED3 8
LED4 9
DMSEL 10
20 THM2
19 THM1
18 VP4
17 VP3
16 VP2
15 VP1
14 VSS
13 VDD
12 TMR
11 CTST
TSSOP
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through vario
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REV: 080206