- 您现在的位置：买卖IC网 > PDF目录67759 > LTC4067EDE#TR (LINEAR TECHNOLOGY CORP) 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 PDF资料下载
参数资料
| 型号： | LTC4067EDE#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO12 |
| 封装： | 4 X 3 MM, PLASTIC, MO-229WGED, DFN-12 |
| 文件页数： | 6/20页 |
| 文件大小： | 223K |
| 代理商： | LTC4067EDE#TR |
LTC4067
14
4067f
OPERATIO
U
if the battery is below the recharge threshold. There is
approximately 3°C of temperature hysteresis associated
with each of the input comparators. If the NTC pin is tied
to GND, thermistor qualied charging is disabled.
Fault Conditions
The CHRG pin provides information as to the charging
status, indicating an active charge cycle with a strong
open-drain pull down at the CHRG pin. NTC faults and
bad battery faults are indicated with serrated pulses; this
is described in more detail under the heading Fault Condi-
tions in the Applications Information section.
When the battery is being charged, the CHRG pin is pulled
low by an internal N-channel MOSFET. When the charge
cycle enters voltage mode charging and the charge current
is reduced below ICC-CHG/10, the CHRG indicates that the
charge cycle is nearly complete by switching to a Hi-Z
state. Also when the battery voltage exceeds the OUT
voltage and the input supply is removed, or the LTC4067
is put into suspend or shutdown modes, the CHRG pin
is forced into a high impedance state. If a bad battery
is detected, or if an NTC temperature fault is detected,
charging is halted and the CHRG pin switches to a series
of serrated open-drain pull down pulses. These serrated
current pulses are designed to cause an LED connected
from the CHRG pin to a positive supply voltage to visibly
ash, indicating to the user that there is a problem, as well
as allowing a microcontroller to detect a fault condition
within 300μs.
Overvoltage Protection
The OVI input is provided to sense potentially hazardous
voltages at the input in case an unregulated wall adapter
is applied. If an overvoltage condition is detected the OVP
pin is driven high to turn off an external PMOS transistor
inserted in series with the IN pin to disconnect the high
voltage from the LTC4067.
Table 2 lists recommended P-channel MOSFETs to use
with the LTC4067.
Table 2. Recommended OVP Transistors
PART NUMBER
DESCRIPTION
IRLML6402
P-channel 16V
FDR8508P
Dual P-channel 16V
If the OVP pin is high, the power path from IN to OUT is
disabled.
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4069EDC-4.4#TRPBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| LTC4069EDC-4.4#PBF | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| LTC4098EUDC-3.6#PBF | BATTERY CHARGE CONTROLLER, PQCC20 |
| LTC4210-4IS6 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| LTC4210-3IS6 | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4068-4.2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Standalone Linear Li-Ion Battery Charger with Programmable Termination |
| LTC4068EDD-4.2 | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN RoHS:否 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 |
| LTC4068EDD-4.2#PBF | 功能描述:IC CHARGER BATT LI-ON 8-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 |
| LTC4068EDD-4.2#TR | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN RoHS:否 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 |
| LTC4068EDD-4.2#TRPBF | 功能描述:IC BATT CHARGER W/PROG TERM 8DFN 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 |
发布紧急采购，3分钟左右您将得到回复。