参数资料
| 型号： | LTC4415EMSE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC DUAL 4A DIODES 16-MSOP |
| 标准包装： | 37 |
| 系列： | PowerPath™ |
| 应用： | 备用电池，高电流开关 |
| FET 型： | P 沟道 |
| 输出数： | 2 |
| 内部开关： | 是 |
| 电源电压： | 1.7 V ~ 5.5 V |
| 电流 - 电源： | 44µA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TFSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 16-MSOP |
| 包装： | 管件 |
LTC4415
OPERATION
R CLIM ≤
I LOAD ? t SWITCH
? V
UndervoltageLockout
Each ideal diode contains an independent UVLO control
circuit so that one input experiencing undervoltage lockout
does not hinder normal operation of the other channel.
APPLICATIONS INFORMATION
Stability Considerations
Any capacitance on the CLIM pins adds a pole to the cur-
rent control loop. Therefore, stray capacitance on these
pins must be kept to a minimum. Although the maximum
allowed value of the current limit adjust resistor is 1000Ω,
any additional capacitance on these pins reduces the
maximum allowed resistance, consequently increasing
the minimum allowed current limit. For stable operation,
the pole frequency at the CLIM pins should be kept above
800kHz. Therefore, if the CLIM pin parasitic capacitance
is C P , the following equation should be used to calculate
the maximum allowed resistor R CLIM :
1
2 π ? 800kHz ? C P
When the voltage at the CLIM pins are monitored using a
long cable, such as an oscilloscope probe, decouple the
parasitic capacitance of the probe and the monitor system
using a series resistor as shown in Figure 3, where a 20k
resistor has been added between the CLIM pin and the
probe to ensure stable operation.
Input and Output Capacitors
High current transients through parasitic inductance on the
input and output sides of the ideal diodes can cause volt-
age spikes on the IN1/IN2/OUT1/OUT2 pins. These current
transients can occur on power plug-in, load disconnect
The diode conduction path is turned off and the status
signal, STAT1 / STAT2 , is deasserted during an undervolt-
age condition.
or switching, disable, or even thermal shutdown. Limit
inductance and/or increase bypass capacitors to prevent
pin voltages from exceeding the absolute maximum rat-
ing of 6V. Some ESR in these capacitors may be helpful
in dampening the resonances and minimizing the ringing
caused by hot plugging or load switching. Refer to Ap-
plication Note 88, entitled, “Ceramic Input Capacitors Can
Cause Overvoltage Transients” for a detailed discussion
and mitigation of this phenomenon.
The values of the input and output decoupling capacitors
also depends on the maximum allowable droop during
switchover in power supply ORing applications. Typical du-
ration for LTC4415 ideal diodes to switchover from reverse
turn-off to forward conduction, t SWITCH , is 9μs. Therefore,
the minimum decoupling capacitance, C, required for a
specified maximum output voltage droop, ? V, when one
of the input voltages drops, can be calculated as follows:
C =
where I LOAD is the load current at the time of switchover.
For example, the required value of output capacitance for
a 100mV maximum droop in the output voltage during
quick switchover at 1A load would be 100μF. Note that both
supplies share the load during switchover, and therefore
reduce the droop, when the voltage on the falling supply
pin changes slowly.
MONITOR
20k
C MONITOR
R CLIM
C P
CLIM
PIN
4415 F03
Figure 3. Current Monitor with High Capacitance Probe/Instrument
4415fa
11
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4416EMS#PBF | IC CTLR POWERPATH 10-MSOP |
| LTC5100EUF#TRPBF | IC DRIVER VCSEL 3.2GBPS 16QFN |
| LTC660CS8#TRPBF | IC REG DBL INV ADJ 0.1A 8SOIC |
| LTC6801HG#TRPBF | IC BATTERY MON MULTICELL 36SSOP |
| LTC6802IG-1#TRPBF | IC MONITOR BATT STACK MC 44-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4415IDHC#PBF | 功能描述:IC DUAL 4A DIODES 16-DFN 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) |
| LTC4415IDHC#TRPBF | 功能描述:IC DUAL 4A DIODES 16-DFN 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) |
| LTC4415IMSE#PBF | 功能描述:IC DUAL 4A DIODES 16-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) |
| LTC4415IMSE#TRPBF | 功能描述:IC DUAL 4A DIODES 16-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) |
| LTC4416EMS | 制造商:Linear Technology 功能描述:OR Controller P-Channel Dual-OUT 10-Pin MSOP |
发布紧急采购，3分钟左右您将得到回复。