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参数资料
| 型号： | TPS2202AIDFR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO30 |
| 封装： | PLASTIC, SSOP-30 |
| 文件页数： | 9/28页 |
| 文件大小： | 605K |
| 代理商： | TPS2202AIDFR |
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TPS2202AI
DUAL-SLOT PC CARD POWER-INTERFACE SWITCH
WITH RESET FOR SERIAL PCMCIA CONTROLLER
SLVS123B – SEPTEMBER 1995 – REVISED JANUARY 2001
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
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
16, 17, and 18 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 serial interface consists of DATA, CLOCK, and LATCH leads. The data is clocked in on the positive leading
edge of the clock (see Figure 2). The 9-bit (D0 through D8) serial data word is loaded during the positive edge
of the latch signal. The latch signal should occur before the next positive leading edge of the clock.
The shutdown bit of the data word places all VCC and Vpp outputs in a high-impedance state and reduces chip
quiescent current to 1
A to conserve battery power.
The TPS2202AI serial interface is designed to be compatible with serial-interface PCMCIA controllers and
current PCMCIA and Japan Electronic Industry Development Association (JEIDA) standards.
An overcurrent output (OC) is provided to indicate an overcurrent condition in any of the VCC or Vpp outputs as
previously discussed.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2202IDBLE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| TPS2202IDBR | 制造商:Rochester Electronics LLC 功能描述:DUAL PCMCIA POWER INTERFACE CONTROLLER - Bulk 制造商:Texas Instruments 功能描述: |
| TPS2202IDF | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TPS2202IDFLE | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TPS2202IDFR | 功能描述:电源开关 IC - 配电 1A Dual-Slot PC Card w/Serial Interface RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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