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参数资料
| 型号： | TPS2042DG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | GREEN, PLASTIC, SOIC-8 |
| 文件页数： | 14/26页 |
| 文件大小： | 583K |
| 代理商： | TPS2042DG4 |
TPS2042, TPS2052
DUAL POWER-DISTRIBUTION SWITCHES
SLVS173A – AUGUST 1998 – REVISED APRIL 1999
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
generic hot-plug applications (see Figure 34)
In many applications it may be necessary to remove modules or pc boards while the main unit is still operating.
These are considered hot-plug applications. Such implementations require the control of current surges seen
by the main power supply and the card being inserted. The most effective way to control these surges is to limit
and slowly ramp the current and voltage being applied to the card, similar to the way in which a power supply
normally turns on. Due to the controlled rise times and fall times of the TPS2042 and TPS2052, these devices
can be used to provide a softer start-up to devices being hot-plugged into a powered system. The UVLO feature
of the TPS2042 and TPS2052 also ensures the switch will be off after the card has been removed, and the switch
will be off during the next insertion. The UVLO feature guarantees a soft start with a controlled rise time for every
insertion of the card or module.
Power
Supply
Block of
Circuitry
TPS2042
GND
IN
EN1
EN2
OC1
OUT1
OUT2
OC2
0.1
F
1000
F
Optimum
2.7 V to 5.5 V
PC Board
Overcurrent Response
Block of
Circuitry
Figure 34. Typical Hot-Plug Implementation
By placing the TPS2042 and TPS2052 between the VCC input and the rest of the circuitry, the input power will
reach these devices first after insertion. The typical rise time of the switch is approximately 2.5 ms, providing
a slow voltage ramp at the output of the device. This implementation controls system surge currents and
provides a hot-plugging mechanism for any device.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2042DR | 功能描述:电源开关 IC - USB Dual 1in 2out .7A RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| TPS2042DRG4 | 功能描述:电源开关 IC - USB 0.7A 2.7-5.5V Dual Hi-Side MOSFET RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| TPS2042P | 功能描述:电源开关 IC - USB Dual 1in 2out .7A RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| TPS2042PE4 | 功能描述:电源开关 IC - USB 0.7A 2.7-5.5V Dual Hi-Side MOSFET RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| TPS2043 | 制造商:TI 制造商全称:Texas Instruments 功能描述:POWER DISTRIBUTION SWITCHES |
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