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LTC4006EGN-6 Datasheet

  • LTC4006EGN-6

  • 4A, High Efficiency, Standalone Li-Ion Battery Charger

  • 221.44KB

  • 16頁

  • LINER

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Final Electrical Specifications
LTC4006
4A, High Efficiency,
Standalone Li-Ion Battery Charger
May 2003
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Complete Charger Controller for 2-, 3- or 4-Cell
Lithium-Ion Batteries
High Conversion Efficiency: Up to 96%
Output Currents Exceeding 4A
鹵0.8%
Accurate Preset Voltages: 8.4V, 12.6V, 16.8V
Built-In Charge Termination with Automatic Restart
AC Adapter Current Limiting Maximizes Charge Rate*
Automatic Conditioning of Deeply Discharged
Batteries
Thermistor Input for Temperature Qualified Charging
Wide Input Voltage Range: 6V to 28V
0.5V Dropout Voltage; Maximum Duty Cycle: 98%
Programmable Charge Current:
鹵5%
Accuracy
Indicator Outputs for Charging, C/10 Current
Detection and AC Adapter Present
Charging Current Monitor Output
16-Pin Narrow SSOP Package
The LTC
廬
4006 is a complete constant-current/constant-
voltage charger controller for 2-, 3- or 4-cell lithium bat-
teries in a small package using few external components.
The PWM controller is a synchronous, quasi-constant fre-
quency, constant off-time architecture that will not gener-
ate audible noise even when using ceramic capacitors.
The LTC4006 is available in 8.4V, 12.6V and 16.8V versions
with
鹵0.8%
accuracy. Charging current is programmable
with a single sense resistor to
鹵4%
typical accuracy. Charg-
ing current can be monitored as a representative voltage at
the I
MON
pin. A timer, programmed by an external resistor,
sets the total charge time or is reset to 25% of total charge
time after C/10 charging current is reached. Charging au-
tomatically resumes when cell voltage falls below 3.9V/cell.
Fully discharged cells are automatically trickle charged at
10% of the programmed current until the cell voltage ex-
ceeds 2.5V/cell. Charging terminates if the low-battery
condition persists for more than 25% of the total charge
time.
LTC4006 includes a thermistor sensor input that sus-
pends charging if an unsafe temperature condition is
detected and automatically resumes charging when bat-
tery temperature returns to within safe limits.
, LTC and LT are registered trademarks of Linear Technology Corporation.
*U.S. Patent No. 5,723,970
APPLICATIO S
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Notebook Computers
Portable Instruments
Battery-Backup Systems
Standalone Li-Ion Chargers
TYPICAL APPLICATIO
DCIN
0V TO 28V
3A
V
LOGIC
4A Li-Ion Battery Charger
INPUT SWITCH
0.1碌F
100k
CHG
ACP
CHARGING
CURRENT MONITOR
INFET
LTC4006
CLP
CHG
DCIN
ACP/SHDN
32.4k
0.0047碌F
THERMISTOR
10k
NTC
0.47碌F
309k
TIMING
RESISTOR
(~2 HOURS)
6k
0.12碌F
I
MON
NTC
R
T
I
TH
GND
CLN
TGATE
BGATE
PGND
CSP
BAT
4006 TA01
5k
15nF
0.033鈩?/div>
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
20碌F
10碌H
0.025鈩?/div>
BATTERY
20碌F
U
U
sn4006 4006is
1

LTC4006EGN-6 產品屬性

  • LTC4006

  • 100

  • 集成電路 (IC)

  • PMIC - 電池管理

  • -

  • 充電管理

  • 鋰離子（Li-Ion）

  • 6 V ~ 28 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 16-SSOP（0.154"，3.90mm 寬）

  • 16-SSOP

  • 管件

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