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DS2710
Single-Cell NiMH Charger

Charges NiMH from a USB Port Without Fear of Overcharging an Alkaline Cell


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 160kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail
The DS2710 is ideal for in-system charging of single-cell nickel metal hydride (NiMH) cells for low-current portable applications. Inputs to the DS2710 include USB voltage sources and 5V regulated adapters. Temperature, voltage, and charge time are monitored to provide proper fast-charging control algorithms for single-cell NiMH or nickel cadmium (NiCd) batteries. The DS2710 includes battery tests to detect defective or inappropriate cells such as alkaline primary batteries.

An evaluation kit is available:  DS2710EVKIT  

Key Features   Applications/Uses
  • Charges Single-Cell NiMH Cells
  • Switch-Mode Topologies Supported by Hysteretic Control Technique
  • Precharges Deeply Depleted Cells
  • Fast-Charges NiMH with -ΔV Termination Sensitivity of 2mV (typ)
  • Monitors Voltage, Temperature, and Time for Safety and Secondary Termination
  • Regulates Charge Current
  • Designed for External pMOS
  • Rail-to-Rail MOSFET Driver
  • Tiny 10-Pin TDFN Package (3mm x 4mm)

 
  • Battery-Powered Toys
  • Cordless Mouse
  • Small Rechargeable Devices
  • Voice Recorders

Key Specifications:  Battery Chargers
Part Number Cell Chemistry NiMH/ NiCd Cells Protected VIN
(V)
Charging VIN
(V)
Charge Rate Set by Max. ICHG
(A)
Charge Termination Charge Regulation Features EV Kit Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
Price
max max max w/pins See Notes
DS2710 
NiCd
NiMH
1 5.5 5.5 Resistor 4 -ΔV Switchmode
Stand Alone
Thermistor Input
Timer
USB Input
No -20 to +70
TDFN/10
11.3 $1.52 @1k
See All Battery Chargers (60)

Diagram
DS2710: Typical Operating Circuit
Typical Operating Circuit

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    2008-06-24
    This page last modified: 2009-08-12


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