- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98279 > TPS2216DAPR (TEXAS INSTRUMENTS INC) 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO32 PDF資料下載
參數(shù)資料
| 型號： | TPS2216DAPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO32 |
| 封裝： | GREEN, PLASTIC, HTSSOP-32 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大?。?/td> | 549K |
| 代理商： | TPS2216DAPR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當前第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
TPS2216
DUALSLOT PC CARD POWERINTERFACE SWITCH
FOR SERIAL PCMCIA CONTROLLERS
SLVS179D MARCH 1999 REVISED JUNE 2000
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
12-V supply not required
Many PC Card switches use the externally supplied 12 V to power gate drive and other chip functions; this
requires that power be present at all times. The TPS2216 offers considerable power savings by using an internal
charge pump to generate the required higher gate drive voltages from the 5-V or 3.3-V power supplies.
Therefore, the external 12-V supply can be disabled except when needed for flash-memory functions, thereby
extending battery lifetime. Additional power savings are realized by the IC during shutdown mode, in which
quiescent current drops to a maximum of 1
A.
3.3-V low-voltage mode
The TPS2216 will operate in 3.3-V low-voltage mode when 3.3 V is the only available input voltage (VI(5V) =0,
VI(12V) = 0). This feature allows host and PC Cards to be operated in low-power 3.3-V-only modes such as sleep
modes. Note that in this operation mode, the IC will derive its bias current from the 3.3-V input pin and can only
provide 3.3 V to the outputs.
voltage transitioning requirement
PC Cards are migrating from 5 V to 3.3 V to minimize power consumption, optimize board space, and increase
logic speeds. The TPS2216 meets all combinations of power delivery as currently defined in the PCMCIA
standard. The latest protocol accommodates mixed 3.3-V/5-V systems by first powering the card with 5 V, then
polling it to determine its 3.3-V compatibility. The PCMCIA specification requires that the capacitors on
3.3-V-compatible cards be discharged to below 0.8 V before applying 3.3-V power. This action ensures that
sensitive 3.3-V circuitry is not subjected to any residual 5-V charge and functions as a power reset. PC Card
specification requires that VCC be discharged within 100 ms. PC Card resistance can not be relied on to provide
a discharge path for voltages stored on PC Card capacitance because of possible high-impedance isolation by
power-management schemes. The TPS2216 includes discharge transistors on all xVCC and xVPP outputs to
meet the specification requirement.
shutdown mode
In the shutdown mode, which can be controlled by bit D8 of the input serial DATA word, each of the xVCC and
xVPP outputs is forced to a high-impedance state. In this mode, the chip quiescent current is limited to 1
A
or less to conserve battery power.
standby mode
The TPS2216 can be put in standby mode by pulling STBY low to conserve power during low-power operation.
In this mode, all of the power outputs (xVCC and xVPP) will have a nominal current limit of 50 mA. STBY has
an internal 150-k
pullup resistor. The output-switch status of the device must be set, allowing the output
capacitors to charge, prior to enabling the standby mode. Changing the setting of the output switches with the
device in standby mode may cause an overcurrent response to be generated.
mode
The mode pin programs the switches in either TPS2216 or TPS2206 mode. An internal 150-k
pulldown
resistor is connected to the pin. Floating or pulling the mode pin low sets the switches in TPS2206 mode; pulling
the mode pin high sets the switches in TPS2216 mode. In TPS2206 mode, xVPP outputs are dependent on
xVCC outputs. In TPS2216 mode, xVPP is programmed independent of xVCC. Refer to TPS2216 control-logic
tables for more information.
相關PDF資料 |
PDF描述 |
|---|---|
| TPS2231MRGP-1R | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20 |
| TPS22902YFPR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA4 |
| TPS22903YFPR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA4 |
| TPS22904YFPR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PBGA4 |
| TPS22934YZVR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, BGA4 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPS2216DAPRG4 | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card w/Serial Interface RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2216DB | 功能描述:熱插拔功率分布 Dual PCMCIA RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2216DBG4 | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card w/Serial Interface RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2216DBR | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card w/Serial Interface RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
| TPS2216DBRG4 | 功能描述:熱插拔功率分布 1A Dual-Slot PC Card w/Serial Interface RoHS:否 制造商:Texas Instruments 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。