Datasheet > MD1821

MD1821

更新时间： 2024-11-21 14:56:03

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
16页	658K
描述
MD1821 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N-channel

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MD1821 数据手册

MD1821

High-Speed 4-Channel MOSFET Driver with Inverting Outputs

Features

General Description

• Inverting MOSFET Driver

• 6 ns Rise and Fall Time

The MD1821 is a high-speed, 4-channel MOSFET

driver designed to drive high-voltage P-channel and

N-channel MOSFETs for medical ultrasound

applications and other applications requiring a high

output current for a capacitive load. The high-speed

input stage of the MD1821 can operate from a 1.8V

to 5V logic interface with an optimum operating input

signal range of 1.8V to 3.3V. An adaptive threshold

circuit is used to set the level translator switch

threshold to the average of the input logic 0 and

logic 1 levels. The input logic levels may be ground

referenced even though the driver is putting out bipolar

signals. The level translator uses a proprietary circuit,

which provides DC coupling together with high-speed

operation.

• 2A Peak Output Source and Sink Currents

• 1.8V to 5V Input CMOS Compatible

• 5V to 10V Total Supply Voltage

• Smart Logic Threshold

• Low-jitter Design

• Four Matched Channels

• Drives Two P-channel and Two N-channel

MOSFETs

• Outputs can Swing below Ground

• Low-inductance Quad Flat No-lead Package

• High-performance, Thermally Enhanced Package

The output stage of the MD1821 has separate power

connections, enabling the output signal L and H levels

to be chosen independently from the supply voltages

used for the majority of the circuit. As an example, the

input logic levels may be 0V and 1.8V, the control logic

may be powered by +5 and –5V and the output

L and H levels may be varied anywhere over the range

of –5 to +5V. The output stage is capable of peak

currents of up to ±2A, depending on the supply

voltages used and load capacitance present. The PE

pin serves a dual purpose. First, its logic H level is used

to compute the threshold voltage level for the channel

input level translators. Second, when PE is low, the

outputs are disabled, with the A and C outputs high and

the B and D outputs low. This assists in properly

precharging the AC coupling capacitors that may be

used in series in the gate drive circuit of an external

PMOS and NMOS transistor pair.

Applications

• Medical Ultrasound Imaging

• Piezoelectric Transducer Drivers

• Non-destructive Testing (NDT)

• PIN Diode Driver

• CCD Clock Driver/buffer

• High-speed Level Translator

Package Type

16-lead QFN

(Top view)

See Table 2-1 for pin information.

 2017 Microchip Technology Inc.

DS20005768A-page 1

12 3 4 5 6 7...16

中文翻译

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与MD1821相关器件

型号	品牌	获取价格	描述	数据表
MD1821K6-G	MICROCHIP	获取价格	HALF BRDG BASED MOSFET DRIVER, PQCC16
MD1821K6-G	SUPERTEX	获取价格	Half Bridge Based MOSFET Driver, PQCC16, 3 X 3 MM, 1 MM HEIGHT, 0.50 MM PITCH, GREEN, PLAS
MD1822	MICROCHIP	获取价格	MD1822 is a high speed, four channel MOSFET driver designed to drive high voltage P- and N
MD1822K6-G	SUPERTEX	获取价格	Half Bridge Based MOSFET Driver, 2A, PQCC16, 3 X 3 MM, 1 MM HEIGHT, 0.50 MM PITCH, GREEN,
MD1842F75FCA	VANLONG	获取价格	Suitable for surface mount and reflow soldering
MD1842F75HCA	VANLONG	获取价格	Suitable for surface mount and reflow soldering
MD185	ETC	获取价格	Analog IC
MD186	ETC	获取价格	Analog IC
MD-189	TE	获取价格	High Level Termination Insensitive Mixer, 1 - 3500 MHz
MD1890A-BM2MM	LITTELFUSE	获取价格	Rectifier Diode,

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