- 您現在的位置：買賣IC網 > PDF目錄385011 > TPS2096DR (Texas Instruments, Inc.) QUAD POWER-DISTRIBUTION SWITCHES PDF資料下載
參數資料
| 型號： | TPS2096DR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUAD POWER-DISTRIBUTION SWITCHES |
| 中文描述： | 四配電開關 |
| 文件頁數： | 16/19頁 |
| 文件大?。?/td> | 314K |
| 代理商： | TPS2096DR |
TPS2090, TPS2091, TPS2092 DUAL,
TPS2095, TPS2096, TPS2097 QUAD
POWER-DISTRIBUTION SWITCHES
SLVS245A
–
SEPTEMBER 2000
–
REVISED MARCH 2001
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
thermal protection (continued)
The TPS209x implements a dual thermal trip to allow fully independent operation of the power distribution
switches. In an overcurrent or short-circuit condition the junction temperature will rise. Once the die temperature
rises to approximately 140
°
C, the internal thermal sense circuitry checks which power switch is in an overcurrent
condition and turns that power switch off, thus isolating the fault without interrupting operation of the adjacent
power switch. Should the die temperature exceed the first thermal trip point of 140
°
C and reach 160
°
C, both
switches turn off. The OC open-drain output is asserted (active low) when overtemperature or overcurrent
occurs.
undervoltage lockout (UVLO)
An undervoltage lockout ensures that the power switch is in the off state at power up. Whenever the input voltage
falls below approximately 2 V, the power switch will be quickly turned off. This facilitates the design of
hot-insertion systems where it is not possible to turn off the power switch before input power is removed. The
UVLO will also keep the switch from being turned on until the power supply has reached at least 2 V, even if
the switch is enabled. Upon reinsertion, the power switch will be turned on with a controlled rise time to reduce
EMI and voltage overshoots.
generic hot-plug applications (see Figure 26)
In many applications it may be necessary to remove modules or pc boards while the main unit is still operating.
These are considered hot-plug applications. Such implementations require the control of current surges seen
by the main power supply and the card being inserted. The most effective way to control these surges is to limit
and slowly ramp the current and voltage being applied to the card, similar to the way in which a power supply
normally turns on. Due to the controlled rise times and fall times of the TPS209x, these devices can be used
to provide a softer start-up to devices being hot-plugged into a powered system. The UVLO feature of the
TPS209x also ensures the switch will be off after the card has been removed, and the switch will be off during
the next insertion. The UVLO feature insures a soft start with a controlled rise time for every insertion of the card
or module.
Power
Supply
Block of
Circuitry
TPS2092
GND
IN1
IN2
EN1
OC
OUT1
OUT2
EN2
0.1
μ
F
1000
μ
F
Optimum
2.7 V to 5.5 V
PC Board
Overcurrent Response
Block of
Circuitry
0.1
μ
F
1000
μ
F
Optimum
Figure 26. Typical Hot-Plug Implementation
By placing the TPS209x between the V
CC
input and the rest of the circuitry, the input power will reach these
devices first after insertion. The typical rise time of the switch is approximately 2.5 ms, providing a slow voltage
ramp at the output of the device. This implementation controls system surge currents and provides a
hot-plugging mechanism for any device.
相關PDF資料 |
PDF描述 |
|---|---|
| TPS2097DR | QUAD POWER-DISTRIBUTION SWITCHES |
| TPS2157IDGQ | 3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT |
| TPS2159IDGNR | Analog IC |
| TPS2212DB | SINGLE-SLOT, PARALLEL INTERFACE POWER SWITCH FOR LOW POWER PC CARD SLOTS |
| TPS2383 | Power Over Ethernet Switch Side Manager |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS2096DRG4 | 功能描述:電源開關 IC - 配電 0.3A 2.7-5.5V Quad Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2097D | 功能描述:電源開關 IC - 配電 0.3A 2.7-5.5V Quad Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2097DG4 | 功能描述:電源開關 IC - 配電 0.3A 2.7-5.5V Quad Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2097DR | 功能描述:電源開關 IC - 配電 0.3A 2.7-5.5V Quad Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2097DRG4 | 功能描述:電源開關 IC - 配電 0.3A 2.7-5.5V Quad Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（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 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
發(fā)布緊急采購，3分鐘左右您將得到回復。