參數(shù)資料
型號(hào)： TPS62260QDRVRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, PDSO6
封裝： 2 X 2 MM, 0.80 MM, GREEN, PLASTIC, SON-6
文件頁數(shù)： 10/32頁
文件大?。?/td> 1182K
代理商： TPS62260QDRVRQ1
SLVSA16A – AUGUST 2009 – REVISED FEBRUARY 2010
www.ti.com
ENABLE
The device is enabled setting EN pin to high. During the start up time tStart Up the internal circuits are settled and
the soft start circuit is activated. The EN input can be used to control power sequencing in a system with various
DC/DC converters. The EN pin can be connected to the output of another converter, to drive the EN pin high and
getting a sequencing of supply rails. With EN = GND, the device enters shutdown mode in which all internal
circuits are disabled. In fixed output voltage versions, the internal resistor divider network is then disconnected
from FB pin.
SOFT START
The TPS6226x 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 250ms. 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.
SHORT-CIRCUIT PROTECTION
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.
THERMAL SHUTDOWN
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.
18
Copyright 2009–2010, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS62260TDDCRQ1 功能描述:Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 600mA SOT-23-5 Thin, TSOT-23-5 制造商:texas instruments 系列:汽車級(jí)，AEC-Q100 包裝:剪切帶（CT） 零件狀態(tài):有效 功能:降壓 輸出配置:正 拓?fù)?降壓 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:2V 電壓 - 輸入（最大值）:6V 電壓 - 輸出（最小值/固定）:0.6V 電壓 - 輸出（最大值）:6V 電流 - 輸出:600mA 頻率 - 開關(guān):2.25MHz 同步整流器:是 工作溫度:-40°C ~ 105°C（TA） 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 供應(yīng)商器件封裝:5-SOT 標(biāo)準(zhǔn)包裝:1
TPS62260TDRVRQ1 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 AC 2.25MHz 600mA SD Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
TPS62261DRVR 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 600mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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
TPS62261DRVRG4 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 600mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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
TPS62261DRVT 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 600mA Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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
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