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LTC4010CFEPBF Datasheet(PDF) 1 Page - Linear Technology

Part # LTC4010CFEPBF
Description  High Efficiency Standalone Nickel Battery Charger
Download  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4010CFEPBF Datasheet(HTML) 1 Page - Linear Technology

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LTC4010

4010fb
Typical applicaTion
DescripTion
High Efficiency Standalone
Nickel Battery Charger
The LTC®4010 provides a complete, cost-effective nickel
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 LTC4010 automatically senses the presence of a DC
adapterandbatteryinsertionorremoval.Whenanexternal
DC source is not present, the LTC4010 enters shutdown
and supply current drawn from an installed battery drops
to the lowest possible level. Heavily discharged batteries
are precharged with a trickle current. The LTC4010 can
simultaneously use both –∆V and ∆T/∆t fast charge ter-
mination techniques and can detect various battery faults.
If necessary, a top-off charge is automatically applied to
NiMH batteries after fast charging is completed. The IC
will also resume charging if the battery self-discharges
after a full charge cycle.
All LTC4010 charging operations are qualified by actual
charge time and maximum average cell voltage. Charging
mayalsobegatedbyminimumandmaximumtemperature
limits. NiMH or NiCd fast charge termination parameters
are pin selectable.
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
2A NiMH Battery Charger
FeaTures
applicaTions
n
Integrated or Standalone Battery Charger
n
Portable Instruments or Consumer Products
n
Battery-Powered Diagnostics and Control
n
Back-Up Battery Management
n
Complete NiMH/NiCd Charger for 1 to 16 Cells
n
No Microcontroller or Firmware Required
n
550kHz PWM Current Source Controller
n
No Audible Noise with Ceramic Capacitors
n
Wide Input Voltage Range: 5.5V to 34V
n
Programmable Charge Current: 5% Accuracy
n
Automatic Trickle Precharge
n
–∆V Fast Charge Termination
n
Optional ∆T/∆t Fast Charge Termination
n
Optional Temperature Qualification
n
Automatic NiMH Top-Off Charge
n
Programmable Timer
n
Automatic Recharge
n
Multiple Status Outputs
n
Micropower Shutdown
n
16-Lead Thermally Enhanced TSSOP Package
2A NiMH Charge Cycle at 1C
FAULT
CHRG
READY
VCC
TGATE
VCDIV
VCELL
VTEMP
LTC4010
TIMER
INTVDD
GND
CHEM
SENSE
BAT
FROM
ADAPTER
9V
47µH
TO
SYSTEM
LOAD
0.05
2-CELL
NiMH PACK
WITH 10k NTC
4010 TA01a
3k
49.9k
10k
10k
0.1µF
68nF
10µF
33nF
10µF
BGATE
PGND
TIME (MINUTES)
0
1.25
1.30
1.40
1.45
1.50
1.60
4010 TA01b
1.35
1.55
28
30
34
36
38
42
32
40
40
100
20
60
80
SINGLE CELL
VOLTAGE
CHARGE
CURRRENT
BATTERY
TEMPERATURE
2A
1A
TOP OFF


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