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参数资料
| 型号： | MIC4416BM4 TR |
| 厂商： | Micrel Inc |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER MOSF LOW SIDE SOT143-4 |
| 标准包装： | 3,000 |
| 系列： | IttyBitty® |
| 配置： | 低端 |
| 输入类型： | 非反相 |
| 延迟时间： | 42ns |
| 电流 - 峰： | 1.2A |
| 配置数： | 1 |
| 输出数： | 1 |
| 电源电压： | 4.5 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-253-4，TO-253AA |
| 供应商设备封装： | SOT-143 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC4416BM4TR |
MIC4416/4417
Functional Diagram
V SUPPLY
VS
0.6mA
V SWITCHED
Micrel, Inc.
0.3mA
MIC4417
CTL
D1
R1
2k
D4
Q1
Q2
INVERTING
Q3
G
Logic-Level
Input
D2
D3
35V
D5
MIC4416
NONINVERTING
Q4
GND
Functional Diagram with External Components
Functional Description
Refer to the functional diagram.
The MIC4416 is a noninverting driver. A logic high on the CTL
(control) input produces gate drive output. The MIC4417 is
an inverting driver. A logic low on the CTL (control) input
produces gate drive output. The G (gate) output is used to
turn on an external N-channel MOSFET.
Supply
VS (supply) is rated for +4.5V to +18V. External capacitors
are recommended to decouple noise.
Control
CTL (control) is a TTL-compatible input. CTL must be forced
high or low by an external signal. A floating input will cause
unpredictable operation.
A high input turns on Q1, which sinks the output of the 0.3mA
and the 0.6mA current source, forcing the input of the first
inverter low.
Hysteresis
The control threshold voltage, when CTL is rising, is slightly
higher than the control threshold voltage when CTL is falling.
When CTL is low, Q2 is on, which applies the additional
0.6mA current source to Q1. Forcing CTL high turns on Q1
which must sink 0.9mA from the two current sources. The
higher current through Q1 causes a larger drain-to-source
voltage drop across Q1. A slightly higher control voltage is
required to pull the input of the first inverter down to its
threshold.
Q2 turns off after the first inverter output goes high. This
reduces the current through Q1 to 0.3mA. The lower current
reduces the drain-to-source voltage drop across Q1. A
slightly lower control voltage will pull the input of the first
inverter up to its threshold.
Drivers
The second (optional) inverter permits the driver to be manu-
factured in inverting and noninverting versions.
The last inverter functions as a driver for the output MOSFETs
Q3 and Q4.
Gate Output
G (gate) is designed to drive a capacitive load. V G (gate
output voltage) is either approximately the supply voltage or
approximately ground, depending on the logic state applied
to CTL.
If CTL is high, and VS (supply) drops to zero, the gate output
will be floating (unpredictable).
ESD Protection
D1 protects VS from negative ESD voltages. D2 and D3
clamp positive and negative ESD voltages applied to CTL.
R1 isolates the gate of Q1 from sudden changes on the CTL
input. D4 and D5 prevent Q1’s gate voltage from exceeding
the supply voltage or going below ground.
May 2005
7
MIC4416/4417
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC4416YM4 TR | 功能描述:功率驱动器IC Low Cost Low-Side MOSFET Driver, Inverting - Lead 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 |
| MIC4416YM4TR | 制造商:Micrel 功能描述:Low-Side MOSFET Driver, MIC4416YM4 |
| MIC4416YM4-TR | 功能描述:IC DRIVER MOSF LOW SIDE SOT143-4 制造商:microchip technology 系列:IttyBitty? 包装:剪切带（CT） 零件状态:有效 驱动配置:低压侧 通道类型:单路 驱动器数:1 栅极类型:N 沟道 MOSFET 电压 - 电源:4.5 V ~ 18 V 逻辑电压?- VIL，VIH:0.8V，2.4V 电流 - 峰值输出（灌入，拉出）:1.2A，1.2A 输入类型:非反相 高压侧电压 - 最大值（自举）:- 上升/下降时间（典型值）:14ns，16ns 工作温度:-40°C ~ 150°C（TJ） 安装类型:表面贴装 封装/外壳:TO-253-4，TO-253AA 供应商器件封装:SOT-143 标准包装:1 |
| MIC4417 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:IttyBitty⑩ Low-Side MOSFET Driver |
| MIC4417BM4 | 制造商:Micrel Inc 功能描述: |
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