Datasheet > MAX20459

MAX20459

更新时间： 2023-12-20 18:44:27

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
55页	1803K
描述
带USB-C专用充电端口的汽车级大电流降压转换器

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中文翻译

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数据手册

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MAX20459 数据手册

EVALUATION KIT AVAILABLE

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MAX20459

Automotive High-Current Step-Down Converter

with USB-C Dedicated Charging Port

General Description

Benefits and Features

The MAX20459 combines a 3A high-efficiency, automo-

● One-Chip Type-C Solution Directly from Car Battery to

tive-grade, step-down converter, a USB Type-C DFP con-

Portable Device

troller, and automatic BC1.2 DCP, Apple , and Sam-

• USB Type-C-Compliant DFP Controller

• Integrated iPhone®/iPad®, Samsung® and BC1.2

DCP Charger Detection

• 4.5V to 28V Input (40V Load Dump), Synchronous

Buck Converter

sung dedicated charger-detection circuitry. The device

also includes a USB load current-sense amplifier and con-

figurable feedback-adjustment circuit designed to provide

automatic USB voltage compensation. The device limits

the USB load current using both a fixed internal peak-cur-

rent threshold and a user-configurable external current-

sense USB load threshold.

• 5V to 7V, 3A Output Capability

• Standalone Device or I C Configuration Options

and Fault Autorecovery

The MAX20459 is optimized for high-frequency operation

and includes programmable frequency selection from

310kHz to 2.2MHz, allowing optimization of efficiency,

noise, and board space based on application require-

ments. The fully synchronous DC-DC converter integrates

high-side and low-side MOSFETs along with an external

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

spectrum operation. Additionally, thermal foldback is im-

plemented to avoid excessive heating of the module while

charging at high ambient temperature.

● Optimal USB Charging and Communication for

Portable Devices

• User-Programmable Voltage Gain Adjusts Output

for up to 474mΩ Cable Resistance

• User-Programmable USB Current Limit

● Low-Noise Features Prevent Interference with AM

Band and Portable Devices

• Fixed-Frequency 310kHz to 2.2MHz Operation

• Fixed-PWM Option at No Load

• Spread Spectrum for EMI Reduction

• SYNC Input/Output for Frequency Parking

The MAX20459 allows flexible configuration and ad-

vanced diagnostic options for both standalone and super-

vised applications. The device can operate as a true one-

chip solution that offers advanced fault autorecovery and

can be programmed using external programming resistors

● Robust Design Keeps Vehicle System and Portable

Device Safe in an Automotive Environment

• Short-to-Battery Protection on V

, HVD± Pins

BUS

• ±15kV Air/±8kV Contact ISO 10605 (330pF, 330Ω)*

• ±15kV Air/±8kV Contact ISO 10605 (330pF, 2kΩ)*

• ±15kV Air/±8kV Contact IEC 61000-4-2 (150pF,

330Ω)*

• Overtemperature Protection, Warning, and

Intelligent Current Foldback

and/or internal I C registers.

The MAX20459 is available in a small 5mm x 5mm 32-pin

TQFN package and is designed to minimize required ex-

ternal components and layout area.

• AEC-Q100 Qualified

• -40ºC to +125ºC Operating Temperature Range

Applications

● Dedicated USB Charging Port (DCP)

• Host and Hub Module Dedicated Charging Ports

• Dedicated Charging Modules

*Tested in Typical Application Circuit as used on the

MAX20459 Evaluation Kit

Ordering Information appears at end of datasheet.

Apple is a registered trademark of Apple Inc.

Samsung is a registered trademark of Samsung Electronics

Co., Ltd.

19-100676; Rev 3; 5/21

12 3 4 5 6 7...55

中文翻译

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与MAX20459相关器件

型号	品牌	获取价格	描述	数据表
MAX20459ATJA/V+	MAXIM	获取价格	Switching Regulator/Controller,
MAX2045ETJ	MAXIM	获取价格	Baseband Circuit, 5 X 5 MM, 0.80 MM HEIGHT, MO-220, QFN-32
MAX2045ETJ+	MAXIM	获取价格	Baseband Circuit, 5 X 5 MM, 0.80 MM HEIGHT, TQFN-32
MAX2045ETJ+T	MAXIM	获取价格	暂无描述
MAX2045ETJ-T	MAXIM	获取价格	High-Gain Vector Multipliers
MAX2045EVKIT	MAXIM	获取价格	Fully Assembled and Tested
MAX2045EVKIT\|MAX2046EVKIT\|MAX2047EVKIT	MAXIM	获取价格	Evaluation Kits for the MAX2045/MAX2046/MAX2047
MAX2046	MAXIM	获取价格	High-Gain Vector Multipliers
MAX2046	ADI	获取价格	高增益矢量乘法器
MAX20461	MAXIM	获取价格	Automotive High-Current Step-Down Converter with USB-C Protection/Host Charger

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