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参数资料
| 型号： | LT3650IMSE-8.2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION 8.2V 2A 12MSOP |
| 标准包装： | 37 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 9 V ~ 32 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-TSSOP （0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 12-MSOP，裸露焊盘 |
| 包装： | 管件 |
LT3650-8.2/LT3650-8.4
High Voltage 2 Amp
Monolithic 2-Cell
Li-Ion Battery Charger
Wide Input Voltage Range: 9V to 32V (40V Absolute
Programmable Charge Current: Up to 2A
User-Selectable Termination: C/10 or Onboard
Dynamic Charge Rate Programming/Soft-Start Pin
Programmable Input Current Limit
1MHz Fixed Frequency
Average Current Mode Control
0.5% Float Voltage Accuracy
5% Charge Current Accuracy
2.5% C/10 Detection Accuracy
NTC Resistor Temperature Monitor
Auto-Recharge at 97.5% Float Voltage
Auto-Precondition at <70% Float Voltage
Bad-Battery Detection with Auto-Reset
Binary Coded Open-Collector Status Pins
3mm × 3mm DFN-12 or MSOP-12 Package
Industrial Handheld Instruments
12V to 24V Automotive and Heavy Equipment
Desktop Cradle Chargers
Notebook Computers
FEATURES
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Termination Timer
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APPLICATIONS
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L , LT, LTC, LTM, Linear Technology, PowerPath and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
DESCRIPTION
The LT ? 3650 is a complete monolithic 2-cell Li-Ion/Polymer
battery charger that operates over a 9V to 32V input volt-
age range (11.5V minimum start-up voltage). The LT3650
provides a constant-current/constant-voltage charge
characteristic, with maximum charge current externally
programmable up to 2A, set using an external current
sense resistor. A precondition feature trickle-charges a
low voltage battery, and bad-battery detection provides a
signal and suspends charging if a battery does not respond
to preconditioning.
The LT3650 can be configured to terminate charging when
charge current falls to C/10, or one-tenth the programmed
maximum current. Once charging is terminated, the LT3650
enters a low current (85μA) standby mode. An auto-restart
feature starts a new charging cycle if the battery voltage
drops 2.5% from the float voltage, or if a new battery is
inserted into a charging system.
The LT3650 contains a user-programmable internal safety
timer (typically set to a three hour full cycle time). The IC
can be configured to use this internal timer if a time-based
termination scheme is desired in which charging can con-
tinue below C/10 until a desired time is reached.
The LT3650 is available in a low profile (0.75mm) 3mm ×
3mm 12-pin DFN and 12-pin MSOP packages.
Charge Current, Efficiency and Power Loss vs Time
10μF
CMPSH1-4
V IN
11.5V TO 32V
CMSH3-40MA
11.5V to 32V 2-Cell 2A Charger
V IN SW
1μF
CLP BOOST
LT3650-8.2
SHDN
SENSE
CHRG
CMSH3-40MA
10μH
0.05
3.0
2.5
2.0
1.5
1.0
V IN = 20V
CHARGE
CURRENT
EFFICIENCY
POWER
LOSS
95
85
75
65
55
0.68μF
FAULT
TIMER
BAT
NTC
RNG/SS
10μF
+
BATTERY
0.5
0
0
45
35
20 40 60 80 100 120 140 160 180 200
365082 TA01a
TIME (MINUTES)
365082 TA01b
36508284fd
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3651 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage High Current Controller for Battery Charging and Power Management |
| LT3651-4.1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 4A High Voltage Monolithic 4A High Voltage |
| LT3651-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 4A High Voltage Li-Ion Battery Charger |
| LT3651-8.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 4A HIgh Voltage 2-Cell Li-Ion Battery Charger |
| LT3651-8.4 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 4A HIgh Voltage 2-Cell Li-Ion Battery Charger |
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