參數(shù)資料
型號(hào)： TPS2550DBV
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(yè)數(shù)： 8/32頁(yè)
文件大?。?/td> 1402K
代理商： TPS2550DBV
ENABLE (EN OR EN)
THERMAL SENSE
SLVS736B – FEBRUARY 2008 – REVISED NOVEMBER 2008 ........................................................................................................................................ www.ti.com
The logic enable controls the power switch, bias for the charge pump, driver, and other circuits to reduce the
supply current. The supply current is reduced to less than 1-
A when a logic high is present on EN or when a
logic low is present on EN. A logic low input on EN or a logic high input on EN enables the driver, control circuits,
and power switch. The enable input is compatible with both TTL and CMOS logic levels.
The TPS2550/51 protects itself with two independent thermal sensing circuits that monitor the operating
temperature of the power-switch and disables operation if the temperature exceeds recommended operating
conditions. The device operates in constant-current mode during an overcurrent conditions, which increases the
voltage drop across power-switch. The power dissipation in the package is proportional to the voltage drop
across the power-switch, so the junction temperature rises during an overcurrent condition. The first thermal
sensor turns off the power-switch when the die temperature exceeds 135°C and the part is in current limit. The
second thermal sensor turns off the power-switch when the die temperature exceeds 155°C regardless of
whether the power-switch is in current limit. Hysteresis is built into both thermal sensors, and the switch turns on
after the device has cooled approximately 15°C. The switch continues to cycle off and on until the fault is
removed. The open-drain false reporting output FAULT is asserted (active low) immediately during an
overtemperature shutdown condition.
16
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2550 TPS2551
相關(guān)PDF資料
PDF描述
TPS2551DRVR 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
TPS2551DRVTG4 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
TPS2551DRVRG4 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
TPS2551DBVR 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
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TPS2550DBVR 功能描述:電源開(kāi)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
TPS2550DBVRG4 功能描述:電源開(kāi)關(guān) IC - USB Adj current Ltd 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
TPS2550DBVT 功能描述:電源開(kāi)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
TPS2550DBVT 制造商:Texas Instruments 功能描述:Power Distribution Load Switch IC 制造商:Texas Instruments 功能描述:IC, CURRENT LIMITED PWR SW, 6.5V SOT23-6
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