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參數(shù)資料
| 型號： | TPS2012PWLE |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | TSSOP-14 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大小： | 553K |
| 代理商： | TPS2012PWLE |
TPS2010, TPS2011, TPS2012, TPS2013
POWER-DISTRIBUTION
SLVS097A – DECEMBER 1994 – REVISED AUGUST 1995
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
overcurrent
A sense FET is employed to check for overcurrent conditions. Unlike sense resistors and polyfuses, sense FETs
do not increase series resistance to the current path. When an overcurrent condition is detected, the device
maintains a constant output current and reduces the output voltage accordingly. Shutdown only occurs if the
fault is present long enough to activate thermal limiting.
Three possible overload conditions can occur. In the first condition, the output has been shorted before the
device is enabled or before VI(IN) has been applied (see Figure 30). The TPS201x senses the short and
immediately switches into a constant-current output.
Under the second condition, the short occurs while the device is enabled. At the instant the short occurs, very
high currents flow for a short time before the current-limit circuit can react (see Figures 5, 6, 7, and 8). After the
current-limit circuit has tripped, the device limits normally.
Under the third condition, the load has been gradually increased beyond the recommended operating current.
The current is permitted to rise until the current-limit threshold is reached (see Figures 9, 10, 11, and 12). The
TPS201x family is capable of delivering currents up to the current-limit threshold without damage. Once the
threshold has been reached, the device switches into its constant-current mode.
Figure 30. Turned-On (Enabled) Into Short Circuit, VI(IN) = 5.5 V
0
1
2
3
45
67
89
t – Time – ms
10
TPS2010
TPS2011
TPS2012
TPS2013
0
1
2
3
2.5
1.5
0.5
–
Output
Current
–
A
I O
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2012PWR | 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 |
| TPS2012PWRG4 | 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 |
| TPS2012-R5DW | 功能描述:臺式示波器 REPAIR SERVICE COVERAGE 5 YEARS (INCLUDES PRODUCT WARRANTY PERIOD) 5 YEAR PERIOD STARTS AT TIME OF CUSTOMER INSTRUMENT PURCHASE 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 |
| TPS2013 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:POWER-DISTRIBUTION |
| TPS2013A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:POWER-DISTRIBUTION SWITCHES |
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