參數(shù)資料
型號(hào)： TPS2014DG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHED CAPACITOR CONVERTER, PDSO8
封裝： GREEN, PLASTIC, SOIC-8
文件頁(yè)數(shù)： 8/26頁(yè)
文件大?。?/td> 558K
代理商： TPS2014DG4
TPS2014, TPS2015
POWER DISTRIBUTION SWITCHES
SLVS159C DECEMBER 1996 REVISED MARCH 2004
16
TI.COM
APPLICATION INFORMATION
Figure 24. Typical Application
OUT
2
3
5
4
EN
OC
IN
7
8
6
22
F
0.1
F
10 k
Power Supply
4 V 5 V
Overcurrent Output
Load Enable
TPS2014
External Load
1
GND
0.1
F
+
power supply considerations
The TPS20xx has multiple inputs and outputs that must be connected in parallel to minimize voltage drop and
prevent unnecessary power dissipation.
A 0.1-
F ceramic bypass capacitor between IN and GND, close to the device, is recommended. A high-value
electrolytic capacitor is also desirable when the output load is heavy or has large paralleled capacitors.
Bypassing the output with a 0.1-
F ceramic capacitor improves the immunity of the device to electrostatic
discharge (ESD).
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 when
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 Figures 7 and 8). The TPS20xx 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 3 and 4). 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 5 and 6). The TPS20xx
is capable of delivering current up to the current-limit threshold without damage. When the threshold has been
reached, the device switches into its constant-current mode.
相關(guān)PDF資料
PDF描述
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TPS2042BDRBT 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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TPS2014DRG4 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
TPS2014P 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
TPS2014PE4 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube
TPS2014-R5DW 功能描述:臺(tái)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
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