ISL94201 Datasheet, PDF (1/19 Pages) Intersil Corporation – Multi-Cell Li-ion Battery Pack Analog Front-End

®
Data Sheet
July 3, 2008
ISL94201
FN6719.0
Multi-Cell Li-ion Battery Pack Analog
Front-End
The ISL94201 is an analog front end for a microcontroller in
a multi-cell Li-ion battery pack. The ISL94201 supports
battery pack configurations consisting of 4-cells to 7-cells in
series and 1 or more cells in parallel. The ISL94201 provides
an internal 3.3V voltage regulator, and cell voltage monitor
level shifters.
Using an internal analog multiplexer the ISL94201 provides
monitoring of each cell voltage plus internal and external
temperature by a separate microcontroller with an A/D
converter. Software on this microcontroller implements all
battery pack control functionality.
Ordering Information
PART NUMBER
PART
(Note)
MARKING
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL94201IRZ 942 01IRTZ 24 Ld 4x4 QFN L24.4x4D
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations). Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Four Battery-Backed Software Controlled Flags
• 10% Accurate 3.3V Voltage Regulator (Minimum 25mA
Out With External NPN Transistor Having Current Gain
of 70)
• Monitored Cell Voltage Output Stable In 100µs
• Simple I²C Host Interface
• Sleep Operation With Programmable Negative Edge or
Positive Edge Wake-Up
• <10µA Sleep Mode
• Pb-Free (RoHS compliant)
Applications
• Power Tools
• Battery Backup Systems
• E-Bikes
• Portable Test Equipment
• Medical Systems
• Hybrid Vehicle
• Military Electronics
Pinout
ISL94201
(24 LD QFN)
TOP VIEW
24 23 22 21 20 19
NC 1
18 TEMPI
VC7/VCC 2
17 AO
VCELL6 3
16 ^NC
VCELL5 ₄
15 NC
NC 5
14 NC
VCELL4 6
13 VSS
7 8 9 10 11 12
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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