- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69510 > TPS54060DRCT (TEXAS INSTRUMENTS INC) SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS54060DRCT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 3 X 3 MM, PLASTIC, SON-10 |
| 文件頁數(shù)： | 9/49頁 |
| 文件大?。?/td> | 2582K |
| 代理商： | TPS54060DRCT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁
Tss(ms)
Iss( A)
Css(nF) =
Vref (V)
0.8
m
EN
SS/TR
V
SENSE
VOUT
www.ti.com
SLVS919A – JANUARY 2009 – REVISED JULY 2010
DETAILED DESCRIPTION (continued)
Slow Start/Tracking Pin (SS/TR)
The TPS54060 effectively uses the lower voltage of the internal voltage reference or the SS/TR pin voltage as
the power-supply's reference voltage and regulates the output accordingly. A capacitor on the SS/TR pin to
ground implements a slow start time. The TPS54060 has an internal pull-up current source of 2mA that charges
the external slow start capacitor. The calculations for the slow start time (10% to 90%) are shown in Equation 6.
The voltage reference (VREF) is 0.8 V and the slow start current (ISS) is 2mA. The slow start capacitor should
remain lower than 0.47mF and greater than 0.47nF.
(6)
At power up, the TPS54060 will not start switching until the slow start pin is discharged to less than 40 mV to
ensure a proper power up, see Figure 30.
Also, during normal operation, the TPS54060 will stop switching and the SS/TR must be discharged to 40 mV,
when the VIN UVLO is exceeded, EN pin pulled below 1.25V, or a thermal shutdown event occurs.
The VSENSE voltage will follow the SS/TR pin voltage with a 45mV offset up to 85% of the internal voltage
reference. When the SS/TR voltage is greater than 85% on the internal reference voltage the offset increases as
the effective system reference transitions from the SS/TR voltage to the internal voltage reference (see
Figure 23). The SS/TR voltage will ramp linearly until clamped at 1.7V.
Figure 30. Operation of SS/TR Pin when Starting
Overload Recovery Circuit
The TPS54060 has an overload recovery (OLR) circuit. The OLR circuit will slow start the output from the
overload voltage to the nominal regulation voltage once the fault condition is removed. The OLR circuit will
discharge the SS/TR pin to a voltage slightly greater than the VSENSE pin voltage using an internal pull down of
100mA when the error amplifier is changed to a high voltage from a fault condition. When the fault condition is
removed, the output will slow start from the fault voltage to nominal output voltage.
Copyright 2009–2010, Texas Instruments Incorporated
17
Product Folder Link(s): TPS54060
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS54060DGQR | 0.94 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS54060DRCR | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS54062DGKR | SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO8 |
| TPS54140DGQR | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
| TPS54140DGQ | SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS54060EVM-457 | 功能描述:電源管理IC開發(fā)工具 TPS54060EVM-457 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS54060EVM-590 | 功能描述:電源管理IC開發(fā)工具 DC/DC converter Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS54060MDGQTEP | 功能描述:Buck, Split Rail Switching Regulator IC Positive Adjustable 0.8V 1 Output 500mA 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 制造商:texas instruments 系列:Eco-Mode? 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，分離軌 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:3.5V 電壓 - 輸入（最大值）:60V 電壓 - 輸出（最小值/固定）:0.8V 電壓 - 輸出（最大值）:58V 電流 - 輸出:500mA 頻率 - 開關(guān):100kHz ~ 2.5MHz 同步整流器:無 工作溫度:-55°C ~ 125°C（TA） 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:10-MSOP-PowerPad 標(biāo)準(zhǔn)包裝:1 |
| TPS54060-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:0.5-A 60-V STEP-DOWN SWIFTa?￠ DC/DC CONVERTER WITH Eco-modea?￠ |
| TPS54060QDGQRQ1 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Aut Cat 3.5-42V 0.5A Step Down 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。