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參數(shù)資料
| 型號(hào)： | TPS2103D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | VAUX POWER-DISTRIBUTION SWITCHES |
| 中文描述： | 沃克斯配電開關(guān) |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 265K |
| 代理商： | TPS2103D |
TPS2102, TPS2103
V
AUX
POWER-DISTRIBUTION SWITCHES
SLVS234A – SEPTEMBER 1999 – REVISED APRIL 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
NO.
DESCRIPTION
NAME
TPS2102
DBV
TPS2103
DBV
1
I/O
D
D
3
EN
EN
GND
IN1
IN2
OUT
NC
I
I
I
I
I
Active-high enable for IN1-OUT switch
Active-low enable for IN1-OUT switch
Ground
Main Input voltage, NMOS drain (250 m
), require 0.22
μ
F bypass
Auxilliary input voltage, PMOS drain (1.3
)
, require 0.22
μ
F bypass
Power switch output
No connection
1
2
5
3
4
3
2
5
1
2
5
3
4
2
5
1
7, 8
4, 6
7, 8
4, 6
O
Unused INx should not be grounded.
detailed description
power switches
n-channel MOSFET
The IN1-OUT n-channel MOSFET power switch has a typical on-resistance of 250 m
at 3.3-V input voltage,
and is configured as a high-side switch.
p-channel MOSFET
The IN2-OUT p-channel MOSFET power switch has a typical on-resistance of 1.3
at 3.3-V input voltage and
is configured as a high-side switch. When operating, the p-channel MOSFET quiescent current is reduced to
typically 0.75
μ
A.
charge pump
An internal charge pump supplies power to the driver circuit and provides the necessary voltage to pull the gate
of the MOSFET above the source. The charge pump operates from input voltages as low as 2.7 V and requires
very little supply current.
driver
The driver controls the gate voltage of the IN1-OUT and IN2-OUT power switches. To limit large current surges
and reduce the associated electromagnetic interference (EMI) produced, the drivers incorporate circuitry that
controls the rise times and fall times of the output voltage.
enable
The logic enable will turn on the IN2-OUT power switch when a logic high is present on EN (TPS2102) or logic
low is present on EN (TPS2103). A logic low input on EN (TPS2102) or logic high on EN (TPS2103) restores
bias to the drive and control circuits and turns on the IN1-OUT power switch. The enable input is compatible
with both TTL and CMOS logic levels.
the V
AUX
application for CardBus controllers
The PC Card specification requires the support of V
AUX
to the CardBus controller as well as to the PC Card
sockets. Both are 3.3-V requirements; however the CardBus controller’s current demand from the V
AUX
supply
is limited to 10
μ
A, whereas the PC Card may consume as much as 200 mA. In either implementation, if support
of a wake-up event is required, the controller and the socket will transition from the 3.3-V V
CC
rail to the 3.3-V
V
AUX
rail when the equipment moves into a low power mode such as D3. The transition from V
CC
to V
AUX
needs
to be seamless in order to maintain all memory and register information in the system. If V
AUX
is not supported,
the system will lose all register information when it transitions to the D3 state.
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| TPS2103DBVTG4 | 功能描述:電源開關(guān) IC - 配電 Dual In/Single Out MOSFET RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
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