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| 型号： | MIC4128YMME |
| 厂商： | Micrel Inc |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MOSFET 1.5A DUAL 8MSOP |
| 标准包装： | 100 |
| 配置： | 低端 |
| 输入类型： | 反相和非反相 |
| 延迟时间： | 37ns |
| 电流 - 峰： | 1.5A |
| 配置数： | 2 |
| 输出数： | 2 |
| 电源电压： | 4.5 V ~ 20 V |
| 工作温度： | -40°C ~ 125°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-EP |
| 包装： | 管件 |
| 产品目录页面： | 1109 (CN2011-ZH PDF) |
| 其它名称： | 576-1790-5 MIC4128YMME-ND |
Micrel
Application Information
Supply Bypassing
Large currents are required to charge and discharge large
capacitive loads quickly. For example, changing a 1000pF
load by 16V in 25ns requires 0.8A from the supply input.
To guarantee low supply impedance over a wide frequency
range, parallel capacitors are recommended for power
supply bypassing. Low-inductance ceramic MLC capacitors
with short lead lengths (< 0.5") should be used. A 1.0μF
film capacitor in parallel with one or two 0.1μF ceramic
MLC capacitors normally provides adequate bypassing.
Grounding
When using the inverting drivers in the MIC4126 or
MIC4128, individual ground returns for the input and output
circuits or a ground plane are recommended for optimum
switching speed. The voltage drop that occurs between the
driver’s ground and the input signal ground, during normal
high-current switching, will behave as negative feedback
and degrade switching speed.
The E-pad and MLF packages have an exposed pad under
the package. It’s important for good thermal performance
that this pad is connected to a ground plane.
Control Input
Unused driver inputs must be connected to logic high
(which can be V S ) or ground. For the lowest quiescent
current (< 500μA), connect unused inputs-to-ground. A
logic-high signal will cause the driver to draw up to 9mA.
The control input voltage threshold is approximately 1.5V.
The control input recognizes 1.5V up to V S as a logic high
and draws less than 1μA within this range.
Power Dissipation
Power dissipation should be calculated to make sure that
the driver is not operated beyond its thermal ratings.
Quiescent power dissipation is negligible. A practical value
MIC4126/27/28
for total power dissipation is the sum of the dissipation
caused by the load and the transition power dissipation (P L
+ P T ).
Load Dissipation
Power dissipation caused by continuous load current
(when driving a resistive load) through the driver’s output
resistance is:
P L = I L2 R O
For capacitive loads, the dissipation in the driver is:
P L = f C L V S2
Transition Dissipation
In applications switching at a high frequency, transition
power dissipation can be significant. This occurs during
switching transitions when the P-channel and N-channel
output FETs are both conducting for the brief moment
when one is turning on and the other is turning off.
P T = 2 f V S Q
Charge (Q) is read from the following graph:
Crossover Energy Loss per Transition
July 2005
6
M9999-072605
(408) 955-1690
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC4128YMME TR | 功能描述:功率驱动器IC 1.5A Dual High Speed MOSFET Driver with Low Thermal Impedance (Pb-Free) RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MIC4128YMMME | 制造商:MIC 制造商全称:MIC GROUP RECTIFIERS 功能描述:Dual 1.5A-Peak Low-Side MOSFET Drivers in Advanced Packaging |
| MIC4129 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:6A-Peak Low-Side Mosfet Driver Bipolar/CMOS/DMOS Process |
| MIC4129YME | 功能描述:功率驱动器IC Improved 6A Hi-Speed, Hi-Current Single MOSFET Driver (Inverting) (Pb-Free) RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MIC4129YME TR | 功能描述:功率驱动器IC Improved 6A Hi-Speed, Hi-Current Single MOSFET Driver (Inverting) (Pb-Free) RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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