DS2714

www.DataSheet4U.com DS2714 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. 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 APPLICATIONS Desktop/Standalone Chargers (AAA/AA) Digital Still Cameras Music Players Games Toys ORDERING INFORMATION PART DS2714E+ DS2714E+T&R MARKING DS2714 DS2714 PIN-PACKAGE 20 TSSOP 20 TSSOP Tape-and-Reel + Denotes lead-free package. CHARGE TOPOLOGY 4-Cell NiMH Charger Controlled Current Source PIN CONFIGURATION DS2714 CC1 CC2 CC3 CC4 LED1 LED2 VSS LED3 LED4 DMSEL 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 THM2 THM1 VP4 VP3 VP2 VP1 VSS VDD TMR CTST GND TSSOP Note: Some revisions of t...