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参数资料
| 型号： | LTC4413EDD2#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO10 |
| 封装： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件页数： | 6/16页 |
| 文件大小： | 190K |
| 代理商： | LTC4413EDD2#PBF |
LTC4413-1/LTC4413-2
14
441312fb
In the event that a low power external PFET is used for
the external overvoltage protection device, care must be
taken to limit the power dissipation in the external PFET.
The operation of this circuit is identical to the “Automatic
Switchover from a Battery to a Wall Adapter” application
shown on the rst page of this data sheet. Here, however,
the ideal diode from INA to INB is disabled by pulling up
on ENBA whenever an overvoltage condition is detected.
This channel is turned-off using a resistor connected to
OVP along with a 5.6V zener diode, ensuring the absolute
maximum voltage at ENBA is not exceeded during an
overvoltage event. When the overvoltage condition ends,
the OVP voltage drops slowly, depending on the gate
charge of the external PFET. This causes the external PFET
to linger in a high RDS(ON) region where it can dissipate
a signicant amount of heat depending on the load cur-
rent. To avoid dissipating heat in the external PFET, this
application delays turning on the ideal diode from INA to
OUTA, until the gate voltage of the external PFET drops
below VENBIL, where the external PFET should safely be
out of the high RDS(ON) region. This soft-start scheme can
be used on either channel of the LTC4413-2.
APPLICATIONS INFORMATION
INA
IDEAL
FDR8508
LTC4413-2
INB
IDEAL
BAT
D2
5.6V
ENBA
GND
ENBB
OUTA
OUTB
STAT
RSTAT
470k
COUT
4.7μF
441312 F07
STAT
STAT IS HIGH WHEN WALL ADAPTER IS
SUPPLYING LOAD CURRENT
OVP IS HIGH WHEN WALL ADAPTER
VOLTAGE > 6V
C1: C0805C106K8PAC
C2: C0403C103K8PAC
COUT: C1206C475K8PAC
OVP
TO LOAD
VCC
OVI
OVP
+
C1
10μF
C2
10nF
D1
OPTIONAL
WALL
ADAPTER
INPUT
1Ω
0.1μF
RENBA
560k
Figure 7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4413EDDPBF | 制造商:Linear Technology 功能描述:2-ch Ideal Diode OR Contr, LTC4413EDD |
| LTC4414EMS8 | 制造商:Linear Technology 功能描述:Power Controller 8-Pin MSOP |
| LTC4414EMS8#PBF | 功能描述:IC CNTRLR POWERPATH 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:PowerPath™ 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
| LTC4414EMS8#TR | 制造商:Linear Technology 功能描述:Power Controller 8-Pin MSOP T/R |
| LTC4414EMS8#TRPBF | 功能描述:IC CNTRLR POWERPATH 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:PowerPath™ 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
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