參數(shù)資料
型號(hào)： TPS2552DBV-1
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封裝： PLASTIC, SOT-23, 6 PIN
文件頁數(shù)： 13/32頁
文件大?。?/td> 2005K
代理商： TPS2552DBV-1
AUTO-RETRY FUNCTIONALITY
OUT
IN
GND
FAULT
ILIM
EN
Input
PowerPad
Output
0.1 F
m
R
100k
FAULT
W
C
0.1 F
RETRY
m
R
20k
ILIM
W
CLOAD
RLOAD
TPS2553
OUT
IN
GND
FAULT
ILIM
EN
ExternalLogic
Signal & Driver
PowerPad
Output
Input
0.1 F
m
R
100k
FAULT
W
C
0.1 F
RETRY
m
R
20k
ILIM
W
CLOAD
RLOAD
TPS2553
SLVS841C – NOVEMBER 2008 – REVISED SEPTEMBER 2009...................................................................................................................................... www.ti.com
Some applications require that an overcurrent condition disables the part momentarily during a fault condition
and re-enables after a pre-set time. This auto-retry functionality can be implemented with an external resistor and
capacitor. During a fault condition, FAULT pulls low disabling the part. The part is disabled when EN is pulled
low, and FAULT goes high impedance allowing CRETRY to begin charging. The part re-enables when the voltage
on EN reaches the turnon threshold, and the auto-retry time is determined by the resistor/capacitor time
constant. The part will continue to cycle in this manner until the fault condition is removed.
Figure 25. Auto-Retry Functionality
Some applications require auto-retry functionality and the ability to enable/disable with an external logic signal.
Figure 26 shows how an external logic signal can drive EN through RFAULT and maintain auto-retry functionality.
The resistor/capacitor time constant determines the auto-retry time-out period.
Figure 26. Auto-Retry Functionality With External EN Signal
20
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TPS2552 TPS2553 TPS2552-1 TPS2553-1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2552DBV1EVM-364 功能描述:交換機(jī) IC 開發(fā)工具 TPS2552DBV1EVM-364 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V
TPS2552DBVEVM-364 功能描述:交換機(jī) IC 開發(fā)工具 TPS2552DBVEVM-364 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V
TPS2552DBVR 功能描述:電源開關(guān) IC - USB Adj Crnt-Ltd Pwr- Dist Sw 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
TPS2552DBVR-1 功能描述:電源開關(guān) IC - USB Adj Crnt-Ltd Pwr- Dist Sw 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
TPS2552DBVT 功能描述:電源開關(guān) IC - USB Adj Crnt-Ltd Pwr- Dist Sw 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
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