欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: TPS57114QRTERQ1
廠商: TEXAS INSTRUMENTS INC
元件分類: 穩壓器
英文描述: SWITCHING REGULATOR, 2000 kHz SWITCHING FREQ-MAX, PQCC16
封裝: 3 X 3 MM, GREEN, PLASTIC, WQFN-16
文件頁數: 6/37頁
文件大?。?/td> 1309K
代理商: TPS57114QRTERQ1
Tss(mS)
Iss( A)
Css(nF) =
Vref(V)
m
SS
EN
PWRGD
SS
EN
PWRGD
TPS57114-Q1
EN1
EN2
VO1
VO2
SLVSAH5A
– DECEMBER 2010 – REVISED MARCH 2011
SLOW START / TRACKING PIN
The TPS57114 -Q1 regulates to the lower of the SS/TR pin and the internal reference voltage. A capacitor on the
SS/TR pin to ground implements a slow start time. The TPS57114 -Q1 has an internal pull-up current source of 2
μA which charges the external slow start capacitor. Equation 4 calculates the required slow start capacitor value
where Tss is the desired slow start time in ms, Iss is the internal slow start charging current of 2
μA, and Vref is
the internal voltage reference of 0.800 V.
vertical spacer
(4)
If during normal operation, the VIN goes below the UVLO, EN pin pulled below 1.2 V, or a thermal shutdown
event occurs, the TPS57114 -Q1 stops switching. When the VIN goes above UVLO, EN is released or pulled
high, or a thermal shutdown is exited, then SS/TR is discharged to below 60 mV before reinitiating a powering up
sequence. The VSENSE voltage will follow the SS/TR pin voltage with a 54mV 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.
SEQUENCING
Many of the common power supply sequencing methods can be implemented using the SS/TR, EN and PWRGD
pins. The sequential method can be implemented using an open drain or collector output of a power on reset pin
of another device. Figure 23 shows the sequential method. The power good is coupled to the EN pin on the
TPS57114 -Q1 which enables the second power supply once the primary supply reaches regulation.
Ratio-metric start up can be accomplished by connecting the SS/TR pins together. The regulator outputs ramp
up and reach regulation at the same time. When calculating the slow start time the pull up current source must
be doubled in Equation 4. The ratio metric method is illustrated in Figure 25.
Figure 23. Sequential Start-Up Sequence
Figure 24. Sequential Startup using EN and
PWRGD
14
Copyright
2010–2011, Texas Instruments Incorporated
Product Folder Link(s): TPS57114 -Q1
相關PDF資料
PDF描述
TPS60100PWP 0.2 A SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20
TPS60101PWPG4 SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20
TPS60101PWPRG4 0.1 A SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20
TPS60230RGTTG4 0.2 A SWITCHED CAPACITOR REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PQCC16
TPS60230RGTT 0.2 A SWITCHED CAPACITOR REGULATOR, 1250 kHz SWITCHING FREQ-MAX, PQCC16
相關代理商/技術參數
參數描述
TPS57140MDRCREP 功能描述:Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 1.5A 10-VFDFN Exposed Pad 制造商:texas instruments 系列:SWIFT?? 包裝:剪切帶(CT) 零件狀態:有效 功能:降壓 輸出配置:正 拓撲:降壓 輸出類型:可調式 輸出數:1 電壓 - 輸入(最小值):3.5V 電壓 - 輸入(最大值):42V 電壓 - 輸出(最小值/固定):0.8V 電壓 - 輸出(最大值):39V 電流 - 輸出:1.5A 頻率 - 開關: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-VFDFN 裸露焊盤 供應商器件封裝:10-VSON(3x3) 標準包裝:1
TPS57140QDGQRQ1 功能描述:直流/直流開關轉換器 3.5-42Vin,1.5A Step Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
TPS57140QDRCRQ1 功能描述:直流/直流開關轉換器 3.5-42Vin,1.5A Step Down Cnvrtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
TPS57160-Q1EVM 功能描述:EVAL MODULE FOR TPS57160-Q1 制造商:texas instruments 系列:SWIFT??,Eco-Mode?? 零件狀態:在售 主要用途:DC/DC,步降 輸出和類型:1,非隔離 電壓 - 輸出:5V 電流 - 輸出:1A 電壓 - 輸入:9 V ~ 16 V 穩壓器拓撲:降壓 頻率 - 開關:2MHz 板類型:完全填充 所含物品:板 使用的 IC/零件:TPS57160-Q1 標準包裝:1
TPS57160QDGQRQ1 功能描述:直流/直流開關轉換器 3.5-60V,1.5A Step Down SWIFT Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
主站蜘蛛池模板: 金沙县| 弥勒县| 肃宁县| 永靖县| 镇沅| 包头市| 崇文区| 阿拉善盟| 江阴市| 徐闻县| 芜湖市| 辽宁省| 即墨市| 青海省| 胶南市| 山阳县| 锡林浩特市| 饶河县| 贵阳市| 黑龙江省| 邻水| 本溪市| 扎鲁特旗| 大竹县| 盐源县| 邢台县| 垣曲县| 田阳县| 三原县| 迭部县| 乌什县| 西安市| 景泰县| 逊克县| 沈阳市| 香格里拉县| 涞源县| 共和县| 广德县| 兴安盟| 来凤县|