Datasheet > MAX20042F

MAX20042F

更新时间： 2024-02-01 19:37:44

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
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描述
Passes 480Mbps USB Data Signals

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中文翻译

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数据手册

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MAX20042F 数据手册

Evaluates: MAX20042F/

MAX20043F/MAX20044F

MAX20044F Evaluation Kit

General Description

Quick Start

The MAX20044F evaluation kit (EV kit) circuit demon-

strates the MAX20044F automotive USB protector switch

IC, featuring overvoltage protection (OVP), electrostatic

discharge (ESD) protection, and undervoltage lockout

(UVLO)/overcurrent protection (OCP) for automotive

USB applications.

Required Equipment

●

MAX20044F EV kit

5V, 2A DC power supply (supply A)

18V, 2A DC power supply (supply B)

Logic function generator

Oscilloscope

The IC protects the USB BUS, D+, and D- data lines from

overvoltage conditions, such as a short-to-battery and

ESD events. UVLO protects the BUS against low-voltage

conditions such as a short-to-ground. The BUS OCP uses

a blanking period allowing momentary BUS shorts to be

ignored. All faults can be monitored using the FAULT

output signal.

Procedure

The EV kit is fully assembled and tested. Follow the

steps below to verify board operation. Caution: Do not

turn on the power supplies until all connections are

completed.

The IC can pass high-speed USB differential (D+ and D-)

1) Verify that shunts are installed as follows:

signals up to 480Mbps and has a low 90mΩ R

ON(MAX)

●

JU1: Pins 1-2 (MAX20044F switches disabled)

for the BUS and a 4Ω R

) for the D+ and D-

ON(TYP)

JU2: Pins 1-2 (IN connected to on-board 3.3V

reference)

lines. The EV kit is powered by the USB BUS. An on-

board MAX15007A automotive regulator provides the IN

reference voltage. The MAX20044F EV kit can also evalu-

ate the MAX20042F and MAX20043F after IC replace-

ment of U1.

2) Set the supply A output to 5V, the supply B output to

18V, and disable both outputs.

3) Set the logic function generator as follows: 3V

P-P

1.5V DC offset square wave, 500kHz, and disable the

output.

Features

● Protects USB BUS, D+, and D- Signals from

4) Connect the supply A positive output to the red BUS

test point on the EV kit and connect the supply ground

to the nearby black GND test point.

Overvoltages Up to 18V and ESD Events

● USB BUS Undervoltage Lockout

● 1.3A (typ) USB BUS Overcurrent-Protection

5) Connect the supply B ground to the GND test point

close to the HVBUS test point on the EV kit. Connect

a voltage probe test lead to the supply B positive out-

put for later use.

Threshold

● 1ms Overcurrent Blanking Time

● Passes 480Mbps USB Data Signals

6) Connect the logic function generator output to the

white D+ test point and the ground to the black

SHIELD test point.

● Low On-Resistance

• BUS: 0.14mΩ (max)

• D+ and D-: 4Ω (typ)

7) Enable both power-supply outputs.

8) Enable the function generator output.

● FAULT Output Signal

● USB Powered

● Fully Assembled and Tested

Ordering Information appears at end of data sheet.

● Evaluates the MAX20042F, MAX20043F, and

MAX20044F ICs in a 16-Pin QSOP Package

19-7705; Rev 2; 2/17

12 3 4 5 6 7

中文翻译

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与MAX20042F相关器件

型号	品牌	获取价格	描述	数据表
MAX20042FGEEA/V+	MAXIM	获取价格	Power Supply Support Circuit,
MAX20043F	MAXIM	获取价格	Passes 480Mbps USB Data Signals
MAX20043F	ADI	获取价格	汽车级高速USB 2.0保护器
MAX20043FGEEA/V+	MAXIM	获取价格	Power Supply Support Circuit,
MAX20044EVKIT	MAXIM	获取价格	Passes 480Mbps USB Data Signals
MAX20044F	MAXIM	获取价格	Passes 480Mbps USB Data Signals
MAX20044F	ADI	获取价格	汽车级高速USB 2.0保护器
MAX20046	ADI	获取价格	汽车级高速USB 2.0保护器
MAX20047	ADI	获取价格	双路、3A USB DCP充电器
MAX20047AFPB/V+	MAXIM	获取价格	Power Supply Support Circuit,

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