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参数资料
| 型号： | LTC1732EMS-8.4#TR |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC BATTCHRG CNTRLR LI-ION 10MSOP |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子，镍镉，镍氢 |
| 电源电压： | 4.5 V ~ 12 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC1732EMS-8.4TR LTC1732EMS8.4TR |
LTC1732-8.4
Lithium-Ion Linear
Battery Charger Controller
FEATURES
DESCRIPTIO
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Complete Linear Charger Controller for 2-Cell
Lithium-Ion Batteries
Preset Charge Voltage with ± 1% Accuracy
Programmable Charge Current
C/10 Charge Current Detection Output
Programmable Charge Termination Timer
Small, Thin 10-Pin MSOP Package
Input Supply (Wall Adapter) Detection Output
8.8V to 12V Input Voltage Range
Automatic Sleep Mode When Input Supply
Is Removed (Only 10 μ A Battery Drain)
Automatic Trickle Charging of Low Voltage Cells
Programmable for Constant-Current-Only Mode
Battery Insertion Detect and Automatic Charging
of Low-Battery
Automatic Battery Recharge
The LTC ? 1732-8.4 is a complete constant-current/con-
stant-voltage linear charge controller for lithium-ion
(Li-Ion) batteries. Nickel-cadmium (NiCd) and nickel metal-
hydride (NiMH) batteries can also be charged with con-
stant current using external termination. Charge current
can be programmed with ± 7% accuracy using external
sense and program resistors. An internal resistor divider
and precision reference set the final float voltage with ± 1%
accuracy.
When the input supply is removed, the LTC1732-8.4
automatically enters a low current sleep mode, dropping
the battery drain current to 10 μ A. An internal comparator
detects the end-of-charge ( C /10) condition while a pro-
grammable timer, using an external capacitor, sets the
total charge time. Fully discharged cells are automatically
trickle charged at 10% of the programmed current until
battery voltage exceeds 4.9V.
APPLICATIO S
The LTC1732-8.4 begins a new charge cycle when a
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Cellular Phones
Handheld Computers
Charging Docks and Cradles
Digital Cameras and Camcorders
, LTC and LT are registered trademarks of Linear Technology Corporation.
discharged battery is connected to the charger or when the
input power is applied. In additon, if the battery remains
connected to the charger and the cell voltage drops below
8.05V, a new charge cycle will begin.
The LTC1732-8.4 is available in the 10-pin MSOP package.
TYPICAL APPLICATIO
400mA 2-Cell 8.4V Li-Ion Battery Charger
Typical Li-Ion Charge Cycle
V IN = 10V
MBRM120T3
CONSTANT
CURRENT
CONSTANT
VOLTAGE
9
R1
1k
R2
1k
2
SEL
8
V CC
SENSE
9
R SENSE
0.25 ?
1 μ F
400
BATTERY VOLTAGE
400mA HR BATTERY
8
C TIMER
0.1 μ F
3
10
4
CHRG DRV
LTC1732-8.4
ACPR BAT
TIMER PROG
GND
5
7
1
6
R PROG *
19.6k
Q1
Si9430DY
I BAT = 400mA
10 μ F
+ 8.4V
Li-Ion
BATTERY
300
200
100
0
0
0.5
CHARGE CURRENT
CHRG
LED OFF
1.0 1.5 2.0
7
TIMER
STOPS
6
2.5 3.0
TIME (HOURS)
*SHUTDOWN INVOKED BY FLOATING THE PROG PIN
1732-8.4 TA01
1732-8.4 TA01b
17328f
1
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| LTC1733EMSE#TRPBF | 功能描述:IC CHRGR BATT MONO THERML 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
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