DS2726_09 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 5-Cell to 10-Cell Li+ Protector with Cell Balancing

Rev 2; 1/09
5-Cell to 10-Cell Li+ Protector with
Cell Balancing
General Description
The DS2726 provides full charge and discharge protection
for 5- to 10-cell lithium-ion (Li+) battery packs. The protec-
tion circuit monitors individual cell voltages to detect over-
voltage and undervoltage conditions. Protection against
discharge overcurrent and short-circuit current is provided
with user-selectable thresholds using external resistors.
P-channel protection FETs are employed high side and
driven from on-chip 10V FET drivers. Cell balancing can
be enabled to ensure that all cells are equally charged.
Power Tools
Electric Bikes
Home Appliances
Applications
Simplified Typical Application
Circuit
PKP+
V_CC
SLEEP
V_IN
PKP-
PKP CC
SNS
DC V_IN
V_CC
V10
V09
SEL0
V08
SEL1
OVS0
OVS1
V07
CBS0
CBS1
V06
CBCFG
SLEEP
DS2726
V05
CSCD
V04
V03
RSC
RDOC
V02
CDOCD
V01
V00
GND
Features
♦ Complete Protection for 5-Cell to 10-Cell Li+ Packs
♦ Pin Programmable for 5 to 10 Cells
♦ Internal Cell-Balancing Circuit, Shunts Up to 300mA
♦ Pin-Programmable V_OV Threshold
♦ Pin-Programmable Cell-Balance Voltage
♦ Overdischarge Current and Short-Circuit Current
Set with External Resistors
♦ Overdischarge Current and Short-Circuit Current
Timeout Delay Set with External Capacitors
♦ Low Power Consumption: 60µA (typ)
♦ Low Shutdown Power Consumption: 5µA (typ)
♦ 7mm x 7mm, 32-Pin TQFN Lead-Free Package
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS2726G+
-20°C to +85°C
32 TQFN-EP*
DS2726G+T&R
-20°C to +85°C
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
________________________________________________________________ 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.