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参数资料
| 型号： | AOZ1312AI-1 |
| 厂商： | Alpha & Omega Semiconductor Inc |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC PWR DIST SW USB 1CH 8SOIC |
| 标准包装： | 3,000 |
| 系列： | EZPower™ |
| 类型： | USB 开关 |
| 输出数： | 1 |
| 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-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
AOZ1312
Applications Information
Input Capacitor Selection
The input capacitor prevents large voltage transients
from appearing at the input, and provides the
instantaneous current needed each time the switch turns
on and to limit input voltage drop. The input capacitor
also prevents high-frequency noise on the power line
from passing through the output of the power side. The
choice of the input capacitor is based on its ripple current
and voltage ratings rather than its capacitor value. The
input capacitor should be located as close to the V IN pin
as possible. A 1 μ F and above ceramic cap is
recommended. However, higher capacitor values further
reduce the voltage drop at the input.
Output Capacitor Selection
The output capacitor acts in a similar way. A small 0.1 μ F
capacitor prevents high-frequency noise from going into
the system. Also, the output capacitor has to supply
enough current for a large load that it may encounter
during system transients. This bulk capacitor must be
large enough to supply fast transient load in order to
prevent the output from dropping.
Power Dissipation Calculation
Calculate the power dissipation for normal load condition
using the following equation:
P D = R ON x (I OUT ) 2
The worst case power dissipation occurs when the load
current hits the current limit due to over-current or short
circuit faults. The power dissipation under these
conditions can be calculated using the following
equation:
P D = (V IN – V OUT ) x I LIMIT
Layout Guidelines
Good PCB layout is important for improving the thermal
and overall performance of the AOZ1312. To optimize the
switch response time to output short-circuit conditions
keep all traces as short as possible to reduce the effect of
unwanted parasitic inductance. Place the input and
output bypass capacitors as close as possible to the IN
and OUT pins. The input and output PCB traces should
be as wide as possible for the given PCB space. Use a
ground plane to enhance the power dissipation capability
of the device.
Rev. 1.1 July 2011
www.aosmd.com
Page 8 of 13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AOZ1312EI-1 | 功能描述:IC PWR DIST SW USB 1CH 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源分配开关 系列:EZPower™ 特色产品:XRP252 Switches 标准包装:1 系列:- 类型:高端开关 输出数:2 Rds（开）:140 毫欧 内部开关:是 电流限制:1.15A 输入电压:1.75 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-TDFN（3x3） 包装:Digi-Reel® 其它名称:1016-1691-6 |
| AOZ1320 | 制造商:AOSMD 制造商全称:Alpha & Omega Semiconductors 功能描述:Load Switch with Controlled Slew Rate |
| AOZ1320CI-01 | 制造商:Alpha & Omega Semiconductor 功能描述:Load Switch with Controlled Slew Rate 6-Pin SOT-23 制造商:Alpha & Omega Semiconductor 功能描述:IC POWER DIST LOAD SW SOT23-6 |
| AOZ1320CI-02 | 制造商:Alpha & Omega Semiconductor 功能描述:Load Switch with Controlled Slew Rate 6-Pin SOT-23 制造商:Alpha & Omega Semiconductor 功能描述:IC POWER DIST LOAD SW SOT23-6 |
| AOZ1320CI-03 | 制造商:Alpha & Omega Semiconductor 功能描述:IC POWER DIST LOAD SW SOT23-6 |
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