- 您现在的位置：买卖IC网 > PDF目录16303 > LT3650EMSE-8.4#PBF (Linear Technology)IC BATTERY CHARGER LI 12MSOP PDF资料下载
参数资料
| 型号： | LT3650EMSE-8.4#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER LI 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 |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
LT3650-8.2/LT3650-8.4
PIN FUNCTIONS
V IN (Pin 1): Charger Input Supply. V IN pin operating range
is 9V to 32V. V IN ≥ 11.5V or (V BOOST – V SW ) > 2V is re-
quired for start-up. I VIN = 85μA after charge termination.
CLP (Pin 2): System Current Limit Input. System current
levels can be monitored by connecting the input power
supply to the CLP pin and connecting a sense resistor
from the CLP pin to the V IN pin. Additional system load is
drawn from the V IN pin connection, and maximum system
load is achieved when V CLP – V VIN = 50mV. The LT3650
servos the maximum charge current required to maintain
programmed maximum system current. If this function is
not desired, connect the CLP pin to the V IN pin (see the
Applications Information section).
SHDN (Pin 3): Precision Threshold Shutdown Pin. The
enable threshold is 1.225V (rising), with 120mV of input
hysteresis. When in shutdown mode, all charging functions
are disabled. The precision threshold allows use of the
SHDN pin to incorporate UVLO functions. If the SHDN pin
is pulled below 0.4V, the IC enters a low current shutdown
mode where the V IN pin current is reduced to 15μA. Typi-
cal SHDN pin input bias current is 10nA. If the shutdown
function is not desired, connect the pin to the V IN pin.
CHRG (Pin 4): Open-Collector Charger Status Output;
typically pulled up through a resistor to a reference volt-
age. This status pin can be pulled up to voltages as high
as V IN when disabled, and can sink currents up to 10mA
when enabled. During a battery charging cycle, CHRG is
pulled low. When the charge cycle is terminated, the CHRG
pin becomes high impedance. If the internal timer is used
for termination, the pin stays low during the charging
cycle until the charge current drops below a C/10 rate, or
I CHG(MAX) /10. A temperature fault also causes this pin to
be pulled low (see the Applications Information section).
FAULT (Pin 5): Open-Collector Fault Status Output; typi-
cally pulled up through a resistor to a reference voltage.
This status pin can be pulled up to voltages as high as V IN
when disabled, and can sink currents up to 10mA when
enabled. This pin indicates charge cycle fault conditions
during a battery charging cycle. A temperature fault causes
this pin to be pulled low. If the internal timer is used for
termination, a bad-battery fault also causes this pin to
be pulled low. If no fault conditions exist, the FAULT pin
remains high impedance (see the Applications Informa-
tion section).
TIMER (Pin 6): End-Of-Cycle Timer Programming Pin.
If a timer-based charge termination is desired, connect
a capacitor from this pin to ground. Full charge end-of-
cycle time (in hours) is programmed with this capacitor
following the equation:
t EOC = C TIMER ? 4.4 ? 10 6
A bad-battery fault is generated if the battery does not
reach the precondition threshold voltage within one-eighth
of t EOC , or:
t PRE = C TIMER ? 5.5 ? 10 5
A 0.68μF capacitor is typically used, which generates a
timer EOC at three hours, and a precondition limit time of
22.5 minutes. If a timer-based termination is not desired,
the timer function is disabled by connecting the TIMER
pin to ground. With the timer function disabled, charging
terminates when the charge current drops below a C/10
rate, or I CHG(MAX) /10.
RNG/SS (Pin 7): Charge Current Programming Pin. This
pin allows a dynamic adjustment of the maximum charge
current, and can be used to employ a soft-start function.
Maximum charge current is adjusted by setting the volt-
age on this pin, such that the maximum desired voltage
across the inductor current sense resistor (V SENSE – V BAT ) is
0.1 ? V RNG/SS , so the maximum charge current reduces to:
V RNG/SS ? I CHG(MAX)
This pin has an effective range from 0V to 1V. 50μA is
sourced from this pin, so the maximum charge current
can be programmed by connecting a resistor (R RNG/SS )
from RNG/SS to ground, such that the voltage dropped
across the resistor is equivalent to the desired program-
ming voltage, or:
V RNG/SS = 50μA ? R RNG/SS
Soft-start functionality can be implemented by connect-
ing a capacitor (C RNG/SS ) from RNG/SS to ground, such
that the time required to charge the capacitor to 1V (full
36508284fd
6
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4070EDDB#TRMPBF | IC LI-ION/POLY BATT CHARGER 8DFN |
| LTC4071EMS8E#PBF | IC LI-ION/POLY BATT CHRGR 8-MSOP |
| 3-1906012-9 | CA 2.0MM OFNR 50/125,LC SEC RED |
| 3-1906014-9 | CA 2.0MM OFNR 50/125,LC SEC YEL |
| 3-1906054-9 | CA 2MM OFNR 62.5/125,LC SEC GRE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3650IDD-4.1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
| LT3650IDD-4.1#PBF | 功能描述:IC CHARGER LI-ION 2A 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LT3650IDD-4.1#TRPBF | 功能描述:IC CHARGER LI-ION 4.1V 2A 12-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LT3650IDD-4.1PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
| LT3650IDD-4.1TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage 2 Amp Monolithic Li-Ion Battery Charger |
发布紧急采购，3分钟左右您将得到回复。