参数资料
| 型号： | LTC4095EDC#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION/POLY 8-DFN |
| 标准包装： | 2,500 |
| 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： | 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： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x2） |
| 包装： | 带卷 (TR) |
LTC4095
OPERATION
NTC Thermistor
The battery temperature is measured by placing a nega-
tive temperature coef?cient (NTC) thermistor close to the
battery pack. The NTC circuitry is shown in Figure 3.
To use this feature, connect the NTC thermistor, R NTC ,
between the NTC pin and ground, and a bias resistor,
R NOM , from IN to NTC. R NOM should be a 1% resistor with
a value equal to the value of the chosen NTC thermistor
at 25°C (R25). A 100k thermistor is recommended since
thermistor current is not measured by the LTC4095 and
its current will have to be considered for compliance with
USB speci?cations.
The LTC4095 will pause charging when the resistance of
the NTC thermistor drops to 0.54 times the value of R25
or approximately 54k (for a Vishay “Curve 1” thermistor,
this corresponds to approximately 40°C). If the battery
charger is in constant voltage mode, the safety timer will
pause until the thermistor indicates a return to a valid
temperature.
As the temperature drops, the resistance of the NTC therm-
istor rises. The LTC4095 is also designed to pause charging
when the value of the NTC thermistor increases to 3.25
times the value of R25. For a Vishay “Curve 1” thermistor,
this resistance, 325k, corresponds to approximately 0°C.
The hot and cold comparators each have approximately
3°C of hysteresis to prevent oscillation about the trip point.
Grounding the NTC pin disables all NTC functionality.
POWER
ON
DUVLO, UVLO AND SUSPEND
IF SUSP < 0.4V AND
FALSE
SUSPEND/SHUTDOWN MODE
CHRG HIGH IMPEDANCE
IN > 4V AND
IN > BAT + 165mV
FAULT
TRUE
NTC FAULT
BATTERY CHARGING SUSPENDED
CHRG PULSES
NO FAULT
STANDBY MODE
NO CHARGE CURRENT
CHRG HIGH IMPEDANCE
NO FAULT, BAT ≤ 2.9V
2.9V < BAT < 4.105V
TRICKLE CHARGE MODE
1/10 FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
BAT > 2.9V
CONSTANT CURRENT MODE
FULL CHARGE CURRENT
CHRG STRONG PULL-DOWN
4 HOUR
TIMEOUT
30 MINUTE TIMER BEGINS
30 MINUTE
TIMEOUT
DEFECTIVE BATTERY
NO CHARGE CURRENT
CHRG PULSES
4 HOUR CHARGE
CYCLE BEGINS
CONSTANT VOLTAGE MODE
4 HOUR TERMINATION
TIMER BEGINS
BAT DROPS BELOW 0.105V
4 HOUR TERMINATION TIMER RESETS
4095 F02
Figure 2. State Diagram of LTC4095 Operation
4095fa
10
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4096XEDD#TRPBF | IC CHARGER LI-ION DL 10-DFN |
| LTC4097EDDB#TRPBF | IC CHARGER LI-ION/POLY 12-DFN |
| LTC4098EUDC#TRPBF | IC CHARGER USB COMP 20-UTQFN |
| LTC4099EUDC#PBF | IC USB PWR MANAGER/CHRGR 20-QFN |
| LTC4100EG#TR | IC CHARGER SMART BATTERY 24-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4096 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
| LTC4096EDD#PBF | 功能描述:IC CHARGER LI-ION DL 10-DFN 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 |
| LTC4096EDD#TRPBF | 功能描述:IC CHARGER LI-ION DL 10-DFN 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 |
| LTC4096X | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Input Standalone Li-Ion Battery Chargers |
发布紧急采购，3分钟左右您将得到回复。