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参数资料
| 型号： | TPS2205IDF |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO30 |
| 封装： | GREEN, PLASTIC, SSOP-30 |
| 文件页数： | 13/30页 |
| 文件大小： | 593K |
| 代理商： | TPS2205IDF |
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TPS2205
DUALSLOT PC CARD POWERINTERFACE SWITCH
FOR PARALLEL PCMCIA CONTROLLERS
SLVS128E OCTOBER 1995 REVISED JANUARY 2001
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
overcurrent and thermal protection (continued)
Thermal limiting prevents destruction of the IC from overheating if the package power-dissipation ratings are
exceeded. Thermal limiting disables all power outputs (both A and B slots) until the device has cooled.
calculating junction temperature
The switch resistance, rDS(on), is dependent on the junction temperature, TJ, of the die. The junction temperature
is dependent on both rDS(on) and the current through the switch. To calculate TJ, first find rDS(on) from Figures
20, 21, 22, and 23 using an initial temperature estimate about 50
°C above ambient. Then calculate the power
dissipation for each switch, using the formula:
P
D +
r
DS(on)
I2
Next, sum the power dissipation and calculate the junction temperature:
T
J + S
P
D
RqJA ) TA,RqJA + 108 C W
°
Compare the calculated junction temperature with the initial temperature estimate. If the temperatures are not
within a few degrees of each other, recalculate using the calculated temperature as the initial estimate.
logic input and outputs
The TPS2205 was designed to be compatible with most popular PCMCIA controllers and current PCMCIA and
JEIDA standards. However, some controllers require slightly counterintuitive connections to achieve desired
output states. The TPS2205 control logic inputs A_VCC3, A_VCC5, B_VCC3 and B_VCC5 are defined active
low (see Figure 31 and control-logic table). As such, they are directly compatible with the logic outputs of the
Cirrus Logic CL-PD6720 controller.
The shutdown input (SHDN) of the TPS2205, when held at a logic low, places all VCC and Vpp outputs in a
high-impedance state and reduces chip quiescent current to 1
A to conserve battery power.
An overcurrent output (OC) is provided to indicate an overcurrent condition in any of the VCC or Vpp supplies
(see discussion above).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2205IDFR | 功能描述:热插拔功率分布 1A Dual-Slot PC Card Power Switch RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2206ADAP | 功能描述:热插拔功率分布 PC Card Power-Ifc Switch RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2206ADAP | 制造商:Texas Instruments 功能描述:IC 1.4A DUAL PWR INT SW 32TSSOP 制造商:Texas Instruments 功能描述:IC, 1.4A DUAL PWR INT SW 32TSSOP |
| TPS2206ADAPG4 | 功能描述:热插拔功率分布 1A Dual-Slot PC Card Pwr Sw RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| TPS2206ADAPR | 功能描述:热插拔功率分布 PC Card Power-Ifc Switch RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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