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| 型号： | TPS2371DG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 12/19页 |
| 文件大小： | 0K |
| 描述： | IC PWR INTRFCE SW FOR POE 8-SOIC |
| 标准包装： | 75 |
| 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： | 管件 |
| 安装类型： | 表面贴装 |
TPS2371
SLUS566A JULY 2003 REVISED NOVEMBER 2003
2
www.ti.com
DESCRIPTION (continued)
The TPS2371 drives an internal low-side FET for control of the return side of the power path. The internal FET
is turned on when the input voltage reaches 36 V and above. When the input voltage decreases, the FET
remains on until the input voltage drops to below 30 V.
During initial turn-on of the switch (inrush mode), an external resistor is used to program the inrush current,
allowing a wide range of capacitor values to be used at the load. According to IEEE 802.3af specification, inrush
current of 400 mA is allowed only for 50 ms, limiting the load capacitor to approximately 180
F. A programmable
inrush current limit removes this limitation, allowing a larger capacitor to be used with a lower inrush current limit.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
ABSOLUTE MAXIMUM RATINGS
Over operating free-air temperature range unless otherwise noted (2)
TPS2371
UNIT
ILIM, DELAY
4
Input voltage range, wrt VEE
CLASS
12
V
Input voltage range, wrt VEE
DET, RTN, EN_DC, VDD
68
V
Operating junction temperature range, TJ
55 to 150
°C
Storage temperature, Tstg
65 to 150
°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
300
°C
(2)
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions”
is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
MIN
NOM
MAX
UNIT
Input voltage, VI
48
57
V
Operating junction temperature, TJ
0
70
°C
DISSIPATION RATINGS(3)(4)
PACKAGE
THERMAL IMPEDANCE
JUNCTION-TO-AMBIENT
TA < 25°C
POWER RATING
TA = 25°C
DERATING
FACTOR
TA = 70°C
POWER RATING
8-Pin Plastic TSSOP (PW)
258.5
°C/W
464 mW
3.9 mW/
°C
290 mW
8-Pin Plastic SOIC (D)
176.0
°C/W
682 mW
5.7 mW/
°C
426 mW
(3) Test board conditions:
1. 3” x 3”, 4 layers, thickness: 0.062”
2. 1.5 oz. copper traces located on the top of the PCB
3. 1.5 oz. copper ground plane on the bottom of the PCB
4. 0.5 oz. copper ground planes on the 2 internal layers
5. 12 thermal vias (see “Recommended Land Pattern” in applications section of this data sheet)
(4) Maximum power dissipation may be limited by over current protection.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS2371DR | 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 |
| 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 |
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