参数资料
| 型号： | LTC4415EMSE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/20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
TYPICAL APPLICATIONS
V IN1 < 0.8V ? ? 1 +
Precision enable inputs and independent status outputs
provide flexibility in power supply back up and load share
applications using the two high current ideal diode circuits
in the LTC4415, as shown in the following examples. The
features shown in these application circuits can be com-
bined in custom applications as needed.
Prioritized Switchover to a Backup Battery
The application circuit, Figure 5, illustrates switchover
from a primary power source to backup power at a pre-
cise input voltage using the prioritized power supply-OR
application circuit. Diode 2 is enabled when the primary
power source voltage on diode 1 input falls below the
threshold given as follows:
? R1 + R2 ?
?
? R3 ?
The enable overlap minimizes the load voltage droop during
switchover. Both input power supplies provide power to
the load during the overlap. The status output pins can be
pulled up to the output voltage or to a logic power supply.
Automatic Switchover to a Backup Battery and Keep-
Alive Power Source
Figure 6 illustrates an application circuit for automatic
switchover to the backup battery if the primary power
source voltage falls below the backup battery voltage. The
wired-AND of the status outputs is used to drive the gate
of a pair of back-to-back connected external NMOS (M1
and M2) when both primary and backup power sources
are absent or below UVLO or during thermal shutdown of
LTC4415. Under these conditions, the keep-alive source
supplies power to critical components of the system. At
the same time, the wired-AND status output turns off
V IN1 < ( 0.8V – V ENHYST ) ? ? 1 +
? R1 ?
?
R2 + R3 ?
IN1
OUT1
AsV IN1 fallsfurther,diode1isdisabledwhentheprimary
power source voltage falls below the threshold determined
by the resistor divider on enable pin EN1:
?
PRIMARY
POWER
SOURCE
OPTIONAL
IDEAL
LTC4415
EN1
CLIM1 STAT1
CLIM2 WARN1
WARN2
R1
47k
KEEP ALIVE/
COIN CELL
DMN2215UDM
M1
M2
The built-in hysteresis on the enable pins in the LTC4415
provides some overlap of diode enables around the swi-
tchover of power supplies. Resistor R2 can be optionally
used for additional overlap between the two supplies. The
additional overlap is given by:
M3
BACKUP +
BAT
EN2
IN2
IDEAL
GND
STAT2
OUT2
47μF
LOAD
4415 F06
V OVERLAP ≈ V ENTH ?
R2
R3
when
R2
R3
<< 1
Figure 6. Automatic Switchover to a Backup Battery with Provision
for Keep-Alive Power to the Load When Both Are Absent
IN1
OUT1
PRIMARY
POWER
SOURCE
R1
R2
R3
R CLIM1
R CLIM2
IDEAL
LTC4415
EN1
CLIM1 STAT1
CLIM2 WARN1
WARN2
STAT2
470k
470k
470k
470k
4.7μF
TO
LOAD
SECONDAY
POWER
SOURCE
(BAT)
+
EN2
IN2
IDEAL
GND
OUT2
4415 F05
Figure 5. Prioritized Power Supply ORing
4415fa
13
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。