LTC4011CFEPBF LINEAR TECH, LTC4011CFEPBF Datasheet
LTC4011CFEPBF
Manufacturer Part Number
LTC4011CFEPBF
Description
Manufacturer
LINEAR TECH
FeaTures
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applicaTions
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L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. PowerPath is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Typical applicaTion
ADAPTER
Complete NiMH/NiCd Charger for 1 to 16 Cells
No Microcontroller or Firmware Required
550kHz Synchronous PWM Current Source Controller
No Audible Noise with Ceramic Capacitors
PowerPath™ Control Support
Programmable Charge Current: 5% Accuracy
Wide Input Voltage Range: 4.5V to 34V
Automatic Trickle Precharge
–∆V Fast Charge Termination
Optional ∆T/∆t Fast Charge Termination
Automatic NiMH Top-Off Charge
Programmable Timer
Automatic Recharge
Multiple Status Outputs
Micropower Shutdown
20-Lead Thermally Enhanced TSSOP Package
Integrated or Standalone Battery Charger
Portable Instruments or Consumer Products
Battery-Powered Diagnostics and Control
Back-Up Battery Management
FROM
5V
0.1µF
INFET
FAULT
CHRG
TOC
READY
2A NiMH Battery Charger
0.033µF
0.068µF
4.7µH
10µF
10µF
High Efficiency Standalone
DescripTion
The LTC
battery fast charge solution in a small package using few
external components. A 550kHz PWM current source
controller and all necessary charge initiation, monitoring
and termination control circuitry are included.
The LTC4011 automatically senses the presence of a
DC adapter and battery insertion or removal. Heavily
discharged batteries are precharged with a trickle cur-
rent. The LTC4011 can simultaneously use both –∆V and
∆T/∆t fast charge termination techniques and can detect
various battery faults. If necessary, a top-off charge is
automatically applied to NiMH batteries after fast charg-
ing is completed. The IC will also resume charging if the
battery self-discharges after a full charge cycle.
All LTC4011 charging operations are qualified by actual
charge time and maximum average cell voltage. Charging
may also be gated by minimum and maximum temperature
limits. NiMH or NiCd fast charge termination parameters
are pin-selectable.
Integrated PowerPath control support ensures that the
system remains powered at all times without allowing load
transients to adversely affect charge termination.
Nickel Battery Charger
®
4011 provides a complete, cost-effective nickel
2A NiMH Charge Cycle at 1C
LTC4011
4011fb
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