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参数资料
| 型号： | MAX4940BETN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC DGTL PULSER HI-VOLT 56TQFN |
| 标准包装： | 37 |
| 应用： | 医疗用超声波成像，声纳 |
| 电源电压： | 2.37 V ~ 6 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | * |
| 封装/外壳： | * |
| 供应商设备封装： | * |
| 包装： | * |
Dual/Quad, Unipolar/Bipolar,
High-Voltage Digital Pulsers
Exposed Pad and Layout Concerns
The MAX4940/MAX4940A provide an exposed pad
(EP) underneath the TQFN package for improved ther-
mal performance. EP is internally connected to V NN1 .
Connect EP to V NN1 externally. To aid heat dissipation,
connect EP to a similarly sized pad on the component
side of the PCB. This pad should be connected through
the solder-side copper by several plated holes to a large
heat spreading copper area to conduct heat away from
the device.
The MAX4940/MAX4940A high-speed pulsers require low-
inductance bypass capacitors to their supply inputs. High-
particular attention to minimize trace lengths and use suf-
ficient trace width to reduce inductance. Use of surface-
mount components is recommended.
Supply Sequencing
In a typical trilevel application when V NN1 and V NN2
are externally shorted (V NN1 = V NN2 ), the MAX4940/
MAX4940A do not require any power sequencing. In
general, and in particular for the multilevel applica-
tion, V NN1 must be less than or equal to V NN2 (V NN1 P
V NN2 ) at all times. No other power-supply sequencing is
required for the MAX4940/MAX4940A.
speed PCB trace design practices are recommended. Pay
Timing Diagrams
90%
10%
90%
10%
t FPN
V PP_
OUT_
10%
90%
10%
t FON
t RNO
90%
GND
t ROP
t FPO
t POH
t PHO
10%
t RNP
90%
10%
V NN_
INP_
50%
50%
50%
50%
t PLH
t PHL
t POL
t PLO
V DD
INN_
50%
50%
50%
50%
GND
CLP_ = HIGH
Figure 1. Detail Timing (R L = 100 I , C L = 100pF)
12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4940BETN+ | 功能描述:功率驱动器IC Unipolar/Bipolar Digital Pulser 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 |
| MAX4940BETN+T | 功能描述:功率驱动器IC Unipolar/Bipolar Digital Pulser 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 |
| MAX4940CTN+ | 功能描述:功率驱动器IC Unipolar/Bipolar Digital Pulser 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 |
| MAX4940CTN+T | 功能描述:功率驱动器IC Unipolar/Bipolar Digital Pulser 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 |
| MAX4940EVKIT+ | 功能描述:电源管理IC开发工具 Maxim Evaluation Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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