35V Buck Battery Charger with Digital Telemetry

35V Buck Battery Charger
with Digital Telemetry
de
al Dio
e
d
I
l
Dua trollers
Con
VIN = 8V to 35V
System
e
l Diod
a
e
d
I
Dual trollers
Con
to
e Up
g
r
a
h
C
ls
8 Cel
LTC4015
ICHARGE
10A+
I2C
Up to
e
g
r
a
Ch
ls
8 Cel
Multichemistry, Coulomb Counter & Battery Health Monitoring
The LTC®4015 is a complete synchronous buck controller/charger for single or multiple Li-Ion/Polymer, LiFePO4 or lead-acid battery
chemistries with on-chip termination algorithms. Many system parameters can be programmed and/or digitally monitored,
including battery voltage and current, battery series resistance, input voltage & current plus battery & die temperatures, all via
an I 2C port. Battery health can be tracked with the battery series resistance measurement and integrated coulomb counter.
The LTC4015 also supports stand-alone applications with no digital programming required.
Features
Info & Free Samples
www.linear.com/product/LTC4015
0.5
100
1-800-4-LINEAR
95
90
0.0
85
80
–0.5
75
70
–1.0
65
Efficiency
QC Error
60
–1.5
Coulomb Counter Error (%)
• Multichemistry Charger with
Termination
• High Efficiency Synchronous Buck
Topology
• Input Voltage Range: 4.5V to 35V
• Digital Telemetry System Monitors for
Most Parameters
• Coulomb Counter and 14-Bit ADC
•PowerPath™ Control for Instant-on
Operation
• Maximum Power Point Tracking
Charger Efficiency & Coulomb
Counter Error vs. Charge Current
Efficiency (%)
55
50
0.1
1
Charge Current (A)
10
–2.0
, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks and PowerPath is a trademark of Linear
Technology Corporation. All other trademarks are the property of
their respective owners.
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