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参数资料
| 型号： | TPS2371DR |
| 厂商： | Texas Instruments |
| 文件页数： | 15/19页 |
| 文件大小： | 0K |
| 描述： | IC PWR INTRFCE SW FOR POE 8-SOIC |
| 标准包装： | 2,500 |
| 应用： | 用于以太网供电（PoE）设备的电源接口开关 |
| 接口： | IEEE 802.3af |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
TPS2371
SLUS566A JULY 2003 REVISED NOVEMBER 2003
5
www.ti.com
DETAILED PIN DESCRIPTIONS (continued)
EN_DC (Pin 6)
Enable pin for the load. This pin is intended to be used with a dc-to-dc coverter with a soft start capacitor. When
power is not available to the dc-to-dc converter, this pin sinks 80-
A and hold off the softstart cap on the dc-to-dc
converter. Once the voltage across the load is within 1.5 V of its final value, the EN_DC pin stops drawing current
and become high impedance, allowing the dc-to-dc to soft start normally.
DELAY (Pin 7)
This pin controls the amount of time that the device ignores an undervoltage condition on VDD. That time is set
by the following equation:
T
DELAY +
100 ms
mF
C
DELAY
VDD (Pin 8)
Positive supply to the device.
Table 1. PoE Classification Resistance Values
CLASS
RESISTANCE
(RCLASS) VALUE ()
POWERED DEVICES
(PDs) Power (W)
CLASSIFICATION
CURRENT (mA)
0
4420
0.44 12.95
2.5
1
953
0.44 3.84
10.8
2
549
3.84 6.49
18.6
3
357
6.49 12.95
28.4
4
255
reserved for future use
39.6
(2)
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| TPS2371DRG4 | 功能描述:热插拔功率分布 Legacy/IEEE802.3af Comp Pwr InterfSw 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 |
| TPS2371PW | 功能描述:热插拔功率分布 Legacy/IEEE802.3af Comp Pwr InterfSw 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 |
| TPS2371PWG4 | 功能描述:热插拔功率分布 Legacy/IEEE802.3af Comp Pwr InterfSw 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 |
| TPS2371PWR | 功能描述:热插拔功率分布 Legacy/IEEE802.3af Comp Pwr InterfSw 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 |
| TPS2371PWRG4 | 功能描述:热插拔功率分布 Legacy/IEEE802.3af Comp Pwr InterfSw 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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