參數(shù)資料
型號(hào)： TPS62242
廠商： Texas Instruments, Inc.
英文描述： 2.25MHz 300mA Step-Down Converter in 2x2mm SON/TSOT23 Package
中文描述： 采用 2x2mm SON/TSOT23 封裝的 2.25MHz 300mA 降壓轉(zhuǎn)換器
文件頁(yè)數(shù)： 7/29頁(yè)
文件大?。?/td> 859K
代理商： TPS62242
www.ti.com
SOFT START
SHORT-CIRCUIT PROTECTION
THERMAL SHUTDOWN
TPS62240, TPS62242, TPS62243
SLVS762B – JUNE 2007 – REVISED SEPTEMBER 2007
The TPS62240 has an internal soft start circuit that controls the ramp up of the output voltage. The output
voltage ramps up from 5% to 95% of its nominal value within typical 250
μs. This limits the inrush current in the
converter during ramp up and prevents possible input voltage drops when a battery or high impedance power
source is used. The soft start circuit is enabled within the start up time tStart up.
The High Side and Low Side MOSFET switches are short-circuit protected with maximum switch current = ILIMF.
The current in the switches is monitored by current limit comparators. Once the current in the High Side
MOSFET switch exceeds the threshold of it's current limit comparator, it turns off and the Low Side MOSFET
switch is activated to ramp down the current in the inductor and High Side MOSFET switch. The High Side
MOSFET switch can only turn on again, once the current in the Low Side MOSFET switch has decreased below
the threshold of its current limit comparator.
As soon as the junction temperature, TJ, exceeds 140°C (typical) the device goes into thermal shutdown. In this
mode, the High Side and Low Side MOSFETs are turned-off. The device continues its operation when the
junction temperature falls below the thermal shutdown hysteresis.
Copyright 2007, Texas Instruments Incorporated
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Product Folder Link(s): TPS62240 TPS62242 TPS62243
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62242DRVR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.25MHz 300mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62242DRVRG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.25MHz 300mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62242DRVT 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.25MHz 300mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62242DRVTG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.25MHz 300mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62242QDDCRQ1 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 AC 2.25MHz 300mA SD Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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