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参数资料
| 型号： | PI5PD2065WEX |
| 厂商： | Pericom |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC POWER DIST USB 2.3A 8SOIC |
| 标准包装： | 1 |
| 类型： | USB 开关 |
| 输出数： | 1 |
| Rds（开）： | 135 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 2.3A |
| 输入电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 标准包装 |
| 其它名称： | PI5PD2065WEXDKR |
PI5PD2061/65
70m ? Current-Limited, Power-Distribution Switches
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/OC Output
The /OC open-drain output is asserted (active low) when an over current or over temperature condition is asserted. The output
remains asserted until the over current or over temperature condition is removed. The /OC pin requires a pull-up resistor, this
resistor should be larger to reduce energy drain. A 100K ? pull-up resistor works well for most applications. In the case of an
over-current or short-circuit conditions, /OC will be asserted only after response delay time, Td, 14ms have elapsed. If an over
temperature shutdown occurs, the /OC is asserted instantaneously.
V+
PI5PD2061
Rpullup
IN
IN
GND
/EN
/OC
OUT
OUT
OUT
Figure 2 Typical Circuit for the /OC Pin
Under-Voltage Lockout (UVLO)
A voltage sense circuit monitors the input voltage, an under voltage lockout ensures that the power switch is in the off state at
power up. When the input voltage is below approximately 2V, a control signal turns off the power switch.
Power Dissipation Calculation
The low R DS(on) resistance on the N-channel MOSFET allows the small surface-mount packages to pass large currents. The
thermal resistances of these packages are high compared to those of power packages. Begin by determining the R DS(on) of the N-
channel MOSFET relative to the input voltage and operating temperature. Using this value, the power dissipation per switch can
be calculated by:
? P D = R DS(on) × I
2
Multiply this number by the number of switches being used. This step renders the total power dissipation from the N-channel
MOSFET.
Finally, calculate the junction temperature:
? T J = P D x R θ JA + T A
Where:
? T A = Ambient temperature °C
? R θ JA = Thermal resistance
? P D = Total power dissipation based on number of switches being used.
Thermal Protection
Thermal protection prevents damage to the IC when heavy-overload or short-circuit faults are present for extended periods of time.
The PI5PD2061/65 implements a thermal protection circuitry to monitor the operating junction temperature of the power
distribution switch. In an over current or short-circuit condition cause to the junction temperature rises, when the die temperature
rises to approximately 135°C due to over current conditions, the internal thermal protection circuitry turns off the switch, thus
preventing the device from damage. Hysteresis is built into the thermal protection circuitry, and after the device has cooled
approximately 10 degrees, the switch turns back on. The switch continues to cycle off and on until the fault is removed. The open-
drain false reporting output (/OC) is asserted (active low) when an over temperature shutdown or over current occurs.
Universal Serial Bus (USB) Application
The universal serial bus (USB) interface is a 480Mb/s or 12Mb/s, multiplexed serial bus designed for low-to-medium bandwidth
PC peripherals (e.g., keyboards, printers, scanners, and mice). The four-wire USB interface is conceived for dynamic attach-
detach (hot plug-unplug) of peripherals. Two lines are provided for differential data, and two lines are provided for 5V power
distribution.
11-0005
10
PT0316-2
10/18/10
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相关代理商/技术参数 |
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| PI5PD2069WEX | 功能描述:IC POWER DIST USB 2.85A 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电源分配开关 系列:- 标准包装:80 系列:- 类型:USB 开关 输出数:2 Rds（开）:135 毫欧 内部开关:是 电流限制:1.5A 输入电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 供应商设备封装:8-MSOP-PowerPad 包装:管件 配用:TPS2066-1EVM-296-ND - TPS2066-1EVM-296 |
| PI5USB14550-AZEE | 功能描述:电池管理 USB Slp/chrg w/o INT pin w/1.5V Threshold RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| PI5USB14550-AZEEX | 功能描述:电池管理 USB Slp/chrg w/o INT pin w/1.5V Threshold RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| PI5USB14566AZAEX | 功能描述:电池管理 8p USB Pwr Nap Cntrl active hi INT o/p RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| PI5USB14566ZAEX | 功能描述:电池管理 8p USB Pwr Nap Cntrl active lo INT o/p RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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