參數(shù)資料
型號(hào)： TPS2231_07
廠商： Texas Instruments, Inc.
英文描述： ExpressCard TM POWER INTERFACE SWITCH
中文描述： 商標(biāo)的ExpressCard電源接口開關(guān)
文件頁(yè)數(shù)： 11/35頁(yè)
文件大小： 1352K
代理商： TPS2231_07
www.ti.com
DETAILED PIN DESCRIPTIONS
CPPE
A logic low level on this input indicates that the card present supports PCI Express functions. CPPE connects to
the AUXIN input through an internal pullup. When a card is inserted, CPPE is physically connected to ground if
the card supports PCI Express functions.
CPUSB
A logic low level on this input indicates that the card present supports USB functions. CPUSB connects to the
AUXIN input through an internal pullup. When a card is inserted, CPUSB is physically connected to ground if the
card supports USB functions.
SHDN
When asserted (logic low), this input instructs the power switch to turn off all voltage outputs and the discharge
FETs are activated. SHDN has an internal pullup connected to AUXIN.
STBY
When asserted (logic low) after the card is inserted, this input places the power switch in standby mode by
turning off the 3.3-V and 1.5-V power switches and keeping the AUX switch on. If asserted prior to the card
being present, STBY places the power switch in OFF Mode by turning off the AUX, 3.3-V, and 1.5-V power
switches. STBY has an internal pullup connected to AUXIN.
RCLKEN
This pin serves as both an input and an output. On power up, a discharge FET keeps this signal at a low state
as long as any of the output power rails are out of their tolerance range. Once all output power rails are within
tolerance, the switch releases RCLKEN allowing it to transition to a high state (internally pulled up to AUXIN).
The transition of RCLKEN from a low to a high state starts an internal timer for the purpose of deasserting
PERST. As an input, RCLKEN can be kept low to delay the start of the PERST internal timer.
PERST
On power up, this output remains asserted (logic level low) until all power rails are within tolerance. Once all
power rails are within tolerance and RCLKEN has been released (logic high), PERST is deasserted (logic high)
after a time delay as shown in the parametric table. On power down, this output is asserted whenever any of the
power rails drop below their voltage tolerance.
TPS2231
TPS2236
SLVS536E–JULY 2004–REVISED SEPTEMBER 2006
Because RCLKEN is internally connected to a discharge FET, this pin can only be driven low and should never
be driven high as a logic input. When an external circuit drives this pin low, RCLKEN becomes an input;
otherwise, this pin is an output.
RCLKEN can be used by the host system to enable a clock driver.
The PERST signal is an output from the host system and an input to the ExpressCard module. This signal is
only used by PCI Express-based modules and its function is to place the ExpressCard module in a reset state.
During power up, power down, or whenever power to the ExpressCard module is not stable or not within voltage
tolerance limits, the ExpressCard standard requires that PERST be asserted. As a result, this signal also serves
as a power-good indicator to the ExpressCard module, and the relationship between the power rails and PERST
are explicitly defined in the ExpressCard standard.
The host can also place the ExpressCard module in a reset state by asserting a system reset SYSRST. This
system reset generates a PERST to the ExpressCard module without disrupting the voltage rails. This is what is
normally called a
warm
reset. However, in a
cold
start situation, the system reset can also be used to extend the
length of time that PERST is asserted.
11
Submit Documentation Feedback
相關(guān)PDF資料
PDF描述
TPS2231RGP ExpressCard TM POWER INTERFACE SWITCH
TPS2812PW DUAL HIGH-SPEED MOSFET DRIVERS
TPS2813PW DUAL HIGH-SPEED MOSFET DRIVERS
TPS2815PW DUAL HIGH-SPEED MOSFET DRIVERS
TPS3103XXX UltraLow Supply-Current/Supply-Voltage Supervisory Circuits
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS2231EVM 功能描述:電源管理IC開發(fā)工具 TPS2231 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
TPS2231MRGPR 功能描述:熱插拔功率分布 ExpressCard Sgl Pwr Interface Sw RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS2231MRGPR-1 功能描述:熱插拔功率分布 ExpressCard Sgl Pwr Interface Sw RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS2231MRGPR-1G4 功能描述:熱插拔功率分布 ExpressCard Sgl Pwr Interface Sw RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
TPS2231MRGPR-2 功能描述:熱插拔功率分布 ExpressCard Sgl Pwr Interface Sw RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*