Datasheet > MAX20038ATIB/V+

MAX20038ATIB/V+

更新时间： 2024-01-29 15:30:07

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
52页	2498K
描述
Switching Regulator/Controller,

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中文翻译

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技术参数
数据手册

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MAX20038ATIB/V+ 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	,	Reach Compliance Code：	unknown
Base Number Matches：	1

MAX20038ATIB/V+ 数据手册

EVALUATION KIT AVAILABLE

Click here for production status of speciﬁc part numbers.

MAX20037/MAX20038

Automotive High-Current Step-Down Converter with

USB Protection/Host Charger Adapter Emulation

General Description

The MAX20037/MAX20038 ICs combine

Beneﬁts and Features

● One-Chip Solution Directly from Car Battery to

3.5A

automotive-grade step-down converter, USB host

charger adapter emulator, and USB protection switches

for automotive USB host applications. The device family

also includes a USB load current-sense amplifier and

configurable feedback-adjustment circuit, designed

to provide automatic USB voltage compensation for

voltage drops in captive cables often found in automotive

applications. The ICs limit the USB load current using

both a fixed internal peak-current threshold of the DC-DC

converter and a user-configurable external USB load

current-sense amplifier threshold.

Portable Device

• 4.5V to 28V (40V Load Dump) Input Voltage

• 5V, 3.5A Output Current Capability

• Device-Attach Detection Output

• Low-Q Current Skip and Shutdown Modes

● Low-Noise Features Prevent Interference with AM

Band and Portable Devices

• Fixed-Frequency 275kHz to 2.2MHz Operation

• Fixed-PWM Option at No Load

• Spread Spectrum for EMI Reduction

• SYNC Input/Output for Frequency Parking

The ICs allow flexible configuration options for both

stand-alone and supervised applications, and can be

programmed for desired operation using both external

● Optimal USB Power and Communication for Portable

Devices

• User-Programmable Voltage Gain Adjusts Output

for Up to 600mΩ Cable Resistance

• User-Programmable USB Current Limit

• USB 480Mbps/12Mbps/1.5Mbps Data Switches

programming resistors and/or internal I C registers

through the I C bus.

The ICs are optimized for high-frequency operation and

include programmable frequency selection from 310kHz

to 2.2MHz, allowing optimization of efficiency, noise, and

board space based on application requirements. The

fully synchronous DC-DC converters feature integrated

high-side and low-side MOSFETs, an external SYNC

input/output, and can be configured for spread-spectrum

operation.

• Integrated iPod /iPhone /iPad and Samsung

Charge-Detection Termination Resistors

• Supports USB BC1.2 CDP and DCP Modes

• Supports China YD/T 1591-2009

• Compatible with USB On-the-Go Speciﬁcation

● Robust Design Keeps Vehicle System and Portable

Devices Safe in Automotive Environment

• Short-to-Battery Protection on DC-DC

Converter Pins

The MAX20037/MAX20038 are available in a small (5mm

x 5mm) 28-pin TQFN package (side-wettable available)

designed to minimize required components and layout area.

• Short-to-VBUS Protection on USB Pins

(MAX20037)

• Short-to-Battery Protection on USB Pins

(MAX20038)

• ±15kV Air/±8kV Contact ISO 10605*

• ±15kV Air/±8kV Contact IEC 61000-4-2*

• Reduced Inrush Current with Soft-Start

• Overtemperature Protection

Applications

● Automotive Radio and Navigation

● USB Port for Host and Hub Applications

● Automotive Connectivity/Telematics

● Dedicated USB Charging Port (DCP)

• -40°C to +125°C Operating Temperature Range

Simpliﬁed Typical Operating Circuit

*Tested in Typical Operating Circuit, as used on the

MAX20037/MAX20038 Evaluation Kit.

V_BAT

MAX20037

MAX20038

DC-DC + USB

CAPTIVE

USB

CABLE

RADIO

HEAD

Ordering Information and Typical Operating Circuit appear

at the end of data sheet.

+5V

USB HOST

CONNECTOR

PORTABLE

DEVICE

HVD-

D-

USB

PHY

iPod, iPhone, and iPad are registered trademarks of Apple Inc.

HVD+

D+

Samsung is a registered trademark of Samsung Electronics

Co., Ltd.

19-100104; Rev 8; 7/18

12 3 4 5 6 7...52

中文翻译

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与MAX20038ATIB/V+相关器件

型号	品牌	获取价格	描述	数据表
MAX20038ATIC/V+	MAXIM	获取价格	Switching Regulator/Controller,
MAX20038ATIC/VY+	MAXIM	获取价格	Switching Regulator/Controller,
MAX20038ATID/V+	MAXIM	获取价格	Switching Regulator/Controller,
MAX20038ATIE/V+	MAXIM	获取价格	Switching Regulator/Controller,
MAX20039	ADI	获取价格	汽车应用、2V至36V、2.2MHz、0.6A/1.2A升/降压转换器，集成H桥架构
MAX2003AC/D	MAXIM	获取价格	NiCd/NiMH Battery Fast-Charge Controllers
MAX2003ACPE	MAXIM	获取价格	NiCd/NiMH Battery Fast-Charge Controllers
MAX2003ACSE	MAXIM	获取价格	NiCd/NiMH Battery Fast-Charge Controllers
MAX2003ACWE	MAXIM	获取价格	NiCd/NiMH Battery Fast-Charge Controllers
MAX2003ACWE+	MAXIM	获取价格	Battery Charge Controller, CMOS, PDSO16, 0.300 INCH, SOIC-16

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