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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)： | 8/12頁 |
| 文件大?。?/td> | 155K |
| 代理商： | LTC4412IS6#TRM |
5
LTC4412
4412fa
VIN (Pin 1): Primary Input Supply Voltage. Supplies power
to the internal circuitry and is one of two voltage sense
inputs to the internal analog controller (The other input to
the controller is the SENSE pin). This input is usually
supplied power from a battery or other power source
which supplies current to the load. This pin can be by-
passed to ground with a capacitor in the range of 0.1
μF to
10
μF if needed to suppress load transients.
GND (Pin 2): Ground. Provides a power return for all the
internal circuits.
CTL (Pin 3): Digital Control Input. A logical high input (VIH)
on this pin forces the gate to source voltage of the primary
P-channel MOSFET power switch to a small voltage (VGOFF).
This will turn the MOSFET off and no current will flow from
the primary power input at VIN if the MOSFET is configured
so that the drain to source diode does not forward bias. A
high input also forces the STAT pin to sink 10
μA of current
(IS(SNK)). If the STAT pin is used to control an auxiliary P-
channel power switch, then a second active source of
power, such as an AC wall adaptor, will be connected to the
load (see Applications Information). An internal current
sink will pull the CTL pin voltage to ground (logical low) if
the pin is open.
UU
U
PI FU CTIO S
STAT (Pin 4): Open-Drain Output Status Pin. When the
SENSE pin is pulled above the VIN pin with an auxiliary
power source by about 20mV or more, the reverse turn-off
threshold (VRTO) is reached. The STAT pin will then go
from an open state to a 10
μA current sink (IS(SNK)). The
STAT pin current sink can be used, along with an external
resistor, to turn on an auxiliary P-channel power switch
and/or signal the presence of an auxiliary power source to
a microcontroller.
GATE (Pin 5): Primary P-Channel MOSFET Power Switch
Gate Drive Pin. This pin is directed by the power controller
to maintain a forward regulation voltage (VFR) of 20mV
between the VIN and SENSE pins when an auxiliary power
source is not present. When an auxiliary power source is
connected, the GATE pin will pull up to the SENSE pin
voltage, turning off the primary P-channel power switch.
SENSE (Pin 6): Power Sense Input Pin. Supplies power to
the internal circuitry and is a voltage sense input to the
internal analog controller (The other input to the controller
is the VIN pin). This input is usually supplied power from
an auxiliary source such as an AC adapter or back-up
battery which also supplies current to the load.
BLOCK DIAGRA
W
–
+
1
6
SOURCE
POWER
VOLTAGE/CURRENT
REFERENCE
0.5V
POWER
LINEAR GATE
DRIVER AND
VOLTAGE CLAMP
A1
VIN
SENSE
ANALOG CONTROLLER
–
+
C1
3
2
CTL
3.5
μA
ON/OFF
10
μA
*DRAIN-SOURCE DIODE OF MOSFET
STATUS
OUTPUT
4412 BD
ON/OFF
STAT
VCC
GATE
4
5
GND
OUTPUT
TO LOAD
SELECTOR
–
+
PRIMARY
SUPPLY
–
+
AUXILIARY
SUPPLY
–
+
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參數(shù)描述 |
|---|---|
| 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(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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