参数资料
| 型号： | PI5PD2069WEX |
| 厂商： | Pericom |
| 文件页数： | 11/13页 |
| 文件大小： | 0K |
| 描述： | IC POWER DIST USB 2.85A 8SOIC |
| 标准包装： | 1 |
| 类型： | USB 开关 |
| 输出数： | 1 |
| Rds（开）： | 115 毫欧 |
| 内部开关： | 是 |
| 电流限制： | 2.85A |
| 输入电压： | 2.7 V ~ 5.5 V |
| 工作温度： | 0°C ~ 105°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： | PI5PD2069WEXDKR |
PI5PD2068/69
70m ? Current-Limited, Power-Distribution Switches
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
USB data is a 3.3V level signal, but power is distributed at 5V to allow for voltage drops in cases where power is distributed
through more than one hub across long cables. Each function must provide its own regulated 3.3V from the 5V input or its own
internal power supply.
The USB specification defines the following five classes of devices, each differentiated by power-consumption requirements:
? Hosts/self-powered hubs (SPH)
? Bus-powered hubs (BPH)
? Low-power, bus-powered functions
? High-power, bus-powered functions
? Self-powered functions
SPHs and BPHs distribute data and power to downstream functions. The PI5PD2061/65 has higher current capability than
required by one USB port; so, it can be used on the host side and supplies power to multiple downstream ports or functions.
Host/Self-Powered and Bus-Powered Hubs
Hosts and SPHs have a local power supply that powers the embedded functions and the downstream ports (see Figure 3). This
power supply must provide from 5.25V to 4.75V to the board side of the downstream connection under full-load and no-load
conditions. Hosts and SPHs are required to have current-limit protection and must report over current conditions to the USB
controller. Typical SPHs are desktop PCs, monitors, printers, and stand-alone hubs.
Downstream
POWER SUPPLY
3.3V 5V
PI5PD2068
USB Ports
D+
2, 3
IN
OUT
6, 7, 8
D-
Vbus
USB
0.1 μ F
5
/OC
0.1 μ F
120 μ F
GND
Controller
4
/EN
GND
1
Figure 3 Typical Four-Port USB Host/Self-Powered Hub
BPHs obtain all power from upstream ports and often contain an embedded function. The hubs are required to power up with less
than one unit load. The BPH usually has one embedded function, and power is always available to the controller of the hub. If the
embedded function and hub require more than 100mA on power up, the power to the embedded function may need to be kept off
until enumeration is completed. This can be accomplished by removing power or by shutting off the clock to the embedded
function. Power switching the embedded function is not necessary if the aggregate power draw for the function and controller is
less than one unit load. The total current drawn by the bus-powered device is the sum of the current to the controller, the
embedded function, and the downstream ports, and it is limited to 500mA from an upstream port.
ECN No: 10-0016
11
PT0332-3
01/17/11
相关PDF资料 |
PDF描述 |
|---|---|
| PQ010FZ5MZZ | IC REG LDO 1V .5A SC-63 |
| PQ012FZ5MZZH | IC REG LDO 1.2V .5A SC-63 |
| PQ012GN01ZPH | IC REG LDO 1.2V 1A SC-63 |
| PQ015EF01SZ | IC REG LDO 1.5V 1A TO-220 |
| PQ015EH01ZZ | IC REG LDO 1.5V 1A TO-263 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| PI5USB1457AZAEX | 制造商:Pericom Semiconductor Corporation 功能描述:USB SWITCH |
发布紧急采购，3分钟左右您将得到回复。