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參數(shù)資料
| 型號： | TPS2012APWP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | POWER-DISTRIBUTION SWITCHES |
| 中文描述： | 配電開關(guān) |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 356K |
| 代理商： | TPS2012APWP |
TPS2010A, TPS2011A, TPS2012A, TPS2013A
POWER-DISTRIBUTION SWITCHES
SLVS189A – DECEMBER 1998 – REVISED NOVEMBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
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 36)
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. Because of the controlled rise times and fall times of the TPS201xA series, 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 TPS201xA 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 guarantees a soft start with a controlled rise time for every insertion
of the card or module.
Power
Supply
Block of
Circuitry
TPS2013A
GND
IN
IN
EN
OUT
OUT
OUT
OUT
0.1
μ
F
1000
μ
F
Optimum
2.7 V to 5.5 V
PC Board
Figure 36. Typical Hot-Plug Implementation
By placing the TPS201xA between the V
CC
input and the rest of the circuitry, the input power will reach this
device first after insertion. The typical rise time of the switch is approximately 9 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(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS2010PW | CONNECTOR ACCESSORY |
| TPS2012PW | POWER-DISTRIBUTION |
| TPS2013PW | POWER-DISTRIBUTION |
| TPS2011PW | CONNECTOR ACCESSORY |
| TPS2158IDGNR | 3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2012APWPG4 | 功能描述:電源開關(guān) IC - 配電 2.0A 2.7-5.5V Single Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2012APWPR | 功能描述:電源開關(guān) IC - 配電 2.0A 2.7-5.5V Single Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2012APWPRG4 | 功能描述:電源開關(guān) IC - 配電 2.0A 2.7-5.5V Single Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| TPS2012B | 功能描述:臺式示波器 Digital ColorDisplay 100MHz 1GS/s 2-Ch RoHS:否 制造商:Teledyne LeCroy 通道:4 帶寬:1 GHz 采樣比:2.5 GS/s 顯示器類型:Color TFT, LCD 輸入電壓:100 VAC to 240 VAC 設(shè)備類型:Digital Oscilloscopes 電纜類型:Global Power Cord Sets Included |
| TPS2012D | 功能描述:電源開關(guān) IC - 配電 2.0A 2.7-5.5V Single Hi-Side MOSFET RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關(guān)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(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
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