DS2710 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Single-Cell NiMH Charger

Rev 0; 4/08
Single-Cell NiMH Charger
General Description
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.
Applications
Small Rechargeable Devices
Voice Recorders
Cordless Mouse
Battery-Powered Toys
Typical Operating Circuit
CHARGE
SOURCE
GROUND
CS
V_DD
VP1
DS2710
THM
VN0
VN1
SENSE
NiMH
CELL
Features
♦ 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)
Ordering Information
PART
PIN-PACKAGE
DS2710G+
10 TDFN-EP*
DS2710G+T&R
10 TDFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
Pin Configuration
TOP VIEW
V_SS 1 ⁺
CS 2
V_DD 3
THM 4
STATUS 5
*EP
DS2710
10 VP1
9 VN1
8 VN0
7 TMR
6 CTEST
*EXPOSED PAD.
TDFN
(3mm × 4mm)
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.