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參數(shù)資料
| 型號(hào)： | LTC4351 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | ECONOLINE: RU - Twin Independent Outputs- Output/Output Isolation 1kVDC- Power Sharing on Outputs- Input/Output Isolation 1kVDC- No Heatsink Required- UL94V-0 Package Material- Toroidal Magnetics- No Extern. Components Required- Custom Solutions Available- Efficiency t |
| 中文描述： | 雙2.6A的電流，2.5V至5.5V，理想二極管采用3mm 3mm的DFN封裝 |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | LTC4351 |
10
LTC4413
4413f
APPLICATIU
W
U
U
Figure 5
Figure 3
Figure 4
LTC4413
IDEAL
INA
ENBA
ENBB
GND
2
4
3,11
1
5
10
9
6
STAT
OUTA
BATA
1-CELL Li-Ion
R1
1000k
R2
200k
R
470k
C1:C1206C106K8PAC
C2:C1206C475K8PAC
C2
4.7
μ
F
4413 F03
TO
LOAD
WALL
ADAPTER
C1
10
μ
F
MP1 FDR8508
IDEAL
INB
OUTB
BATB
1-CELL Li-Ion
LTC4413
IDEAL
INA
ENBA
ENBB
GND
2
4
3,11
1
5
10
9
6
STAT
STAT
OUTA
R
470k
C1
4.7
μ
F
4413 F04
TO
LOAD
PRIMARY
POWER
AUX
POWER
IDEAL
INB
OUTB
C
A
10
μ
F
C
B
10
μ
F
MICROCONTROLLER
microcontroller’s analog inputs (perhaps with the aid of a
resistor voltage divider) monitors each supply input and
the LTC4413 status, and then commands the LTC4413
through the two ENBA/ENBB control inputs.
Automatic Switchover from a Battery to an Auxiliary
Supply or a Wall Adapter
Figure 5 illustrates an application for implementing the
function of automatic switchover from a battery to either
an auxiliary supply or to a wall adapter using the LTC4413.
The LTC4413 automatically senses the presence of a wall
adapter as the ENBB pin voltage is pulled higher than its
rising turn-off threshold of 550mV through resistive di-
vider (R4 and R5). This disables the AUX input from
powering the load. If the AUX is not present when a wall
adapter is attached (i.e., the BAT is supplying load cur-
rent), as the wall adapter voltage rises, the body diode in
MP1 will forward bias, pulling the output voltage above the
BAT voltage. The LTC4413 will sense a reverse voltage of
as little as 10mV and turn off the ideal diode between INA
and OUTA. This will cause the STAT voltage to fall, turning
on MP1. The load will then draw current from the wall
adapter, and the battery will be disconnected from the
load. If the AUX is not present when the wall adapter is
removed, the load voltage will droop until the BAT voltage
exceeds the load voltage. The LTC4413 will sense that the
BAT voltage is greater, causing the STAT voltage to rise,
disabling MP1; the BAT will then provide power to the load.
LTC4413
IDEAL
INA
ENBB
4
ENBA
2
3,11
1
5
10
9
6
STAT
GND
OUTA
R2
1000k
R3
100k
BAT
R
470k
C1:C0805C106K8PAC
C2:C1206C475K8PAC
C2
4.7
μ
F
4413 F05
TO
LOAD
WALL
ADAPTER
AUX
ADAPTER
R4
1000k
R5
500k
R1
1
C1
10
μ
F
MP1 FDR8508
IDEAL
INB
OUTB
current to the load. When a wall adapter input is applied,
the voltage divider formed by R1 and R2 will disable the
LTC4413, causing the STAT pin voltage to fall, turning on
MP1. At this point the load will be powered by the wall
adapter and both batteries may be removed without inter-
rupting the load voltage. When the wall adapter is re-
moved, the output voltage will droop until the voltage
divider turns on the LTC4413, at which point the batteries
will revert to providing load power. The status signal can
also be used to provide information as to whether the wall
adapter (or BATB) is supplying the load current.
Automatic PowerPath Control
Figure 4 illustrates an application circuit for microcontrol-
ler monitoring and control of two power sources. The
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參數(shù)描述 |
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| LTC4352CDD#PBF | 功能描述:IC IDEAL DIODE CNTRL 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時(shí)間 - 開啟:100ns 延遲時(shí)間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4352CDD#TRPBF | 功能描述:IC IDEAL DIODE CNTRL 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時(shí)間 - 開啟:100ns 延遲時(shí)間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4352CMS#PBF | 功能描述:IC IDEAL DIODE CNTRL 12-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時(shí)間 - 開啟:100ns 延遲時(shí)間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4352CMS#TRPBF | 功能描述:IC IDEAL DIODE CNTRL 12-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時(shí)間 - 開啟:100ns 延遲時(shí)間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| LTC4352HDD#PBF | 功能描述:IC IDEAL DIODE CTLR W/MON 12-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 應(yīng)用:電池備份，工業(yè)/汽車，大電流開關(guān) FET 型:- 輸出數(shù):5 內(nèi)部開關(guān):是 延遲時(shí)間 - 開啟:100ns 延遲時(shí)間 - 關(guān)閉:- 電源電壓:3 V ~ 5.5 V 電流 - 電源:250µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
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