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參數(shù)資料
| 型號： | LTC4412IS6#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 155K |
| 代理商： | LTC4412IS6#TRM |
1
LTC4412
4412fa
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Low Loss PowerPath
TM
Controller in ThinSOT
■ Very Low Loss Replacement for Power Supply
OR’ing Diodes
■ Minimal External Components
■ Automatic Switching Between DC Sources
■ Simplifies Load Sharing with Multiple Batteries
■ Low Quiescent Current: 11
μA
■ 3V to 28V AC/DC Adapter Voltage Range
■ 2.5V to 28V Battery Voltage Range
■ Reverse Battery Protection
■ Drives Almost Any Size MOSFET for Wide Range of
Current Requirements
■ MOSFET Gate Protection Clamp
■ Manual Control Input
■ Low Profile (1mm) ThinSOT
TM Package
■ Cellular Phones
■ Notebook and Handheld Computers
■ Digital Cameras
■ USB-Powered Peripherals
■ Uninterruptable Power Supplies
■ Logic Controlled Power Switch
The LTC
4412 controls an external P-channel MOSFET to
create a near ideal diode function for power switchover or
load sharing. This permits highly efficient OR’ing of mul-
tiple power sources for extended battery life and low self-
heating. When conducting, the voltage drop across the
MOSFET is typically 20mV. For applications with a wall
adapter or other auxiliary power source, the load is auto-
matically disconnected from the battery when the auxiliary
source is connected. Two or more LTC4412s may be
interconnected to allow load sharing between multiple
batteries or charging of multiple batteries from a single
charger.
The wide supply operating range supports operation from
one to six Li-Ion cells in series. The low quiescent current
(11
μA typical) is independent of the load current. The gate
driver includes an internal voltage clamp for MOSFET
protection.
The STAT pin can be used to enable an auxiliary P-channel
MOSFET power switch when an auxiliary supply is
detected. This pin may also be used to indicate to a
microcontroller that an auxiliary supply is connected. The
control (CTL) input enables the user to force the primary
MOSFET off and the STAT pin low.
The LTC4412 is available in a low profile (1mm) ThinSOT
package.
PowerPath and ThinSOT are trademarks of Linear Technology Corporation.
VIN
GND
CTL
SENSE
GATE
STAT
1
2
3
6
5
4
LTC4412
COUT
TO LOAD
STATUS OUTPUT
LOW WHEN WALL
ADAPTER PRESENT
470k
4412 F01
VCC
1N5819
FDN306P
BATTERY
CELL(S)
WALL
ADAPTER
INPUT
Figure 1. Automatic Switchover of Load Between a Battery and a Wall Adapter
FORWARD VOLTAGE (V)
0.02
0
CURRENT
(A)
1
CONSTANT
RON
4412 F01b
0.5
CONSTANT
VOLTAGE
SCHOTTKY
DIODE
LTC4412
LTC4412 vs Schottky Diode
Forward Voltage Drop
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
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相關(guān)代理商/技術(shù)參數(shù) |
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| LTC4412IS6TRMPBF | 制造商:Linear Technology 功能描述:PowerPath Controller Low-Loss TSOT23-6 |
| LTC4413EDD | 制造商:Linear Technology 功能描述:Dual Ideal Diodes 10-Pin DFN EP |
| LTC4413EDD#PBF | 功能描述:IC IDEAL DIODE DUAL 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - O 圈控制器 系列:- 標準包裝: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 延遲時間 - 開啟:100ns 延遲時間 - 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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