Datasheet > MAX20028

MAX20028

更新时间： 2024-09-25 14:58:15

品牌	Logo	应用领域
亚德诺 - ADI		DC-DC转换器控制器
页数	文件大小	规格书
27页	679K
描述
双路2.1MHz降压型DC-DC转换器和降压控制器

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中文翻译

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MAX20028 数据手册

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Step-Down Controller with Dual 2.1 MHz Step-

Down DC-DC Converters

MAX20028

General Description

Benefits and Features

The MAX20028 power-management integrated circuit

(PMIC) is a 2.1MHz, multichannel, DC-DC converter de-

signed for automotive applications. The device integrates

three supplies in a small footprint. The device includes one

high-voltage step-down controller (OUT1) designed to run

directly from a car battery, and two low-voltage step-down

converters (OUT2/OUT3) cascaded from OUT1. Under

no-load conditions, the MAX20028 consumes only 30µA

of quiescent current, making it ideal for automotive appli-

cations.

● High-Efficiency Voltage DC-DC Controller Saves

Power

• 3.5V to 36V Operating Supply Voltage

• Output Voltage: Pin Selectable, Fixed, or Resistor-

Divider Adjustable

• 350kHz to 2.1MHz Operation

• 30μA Quiescent Current with DC-DC Controller

Enabled

● Dual 2.1MHz DC-DC Converters with Integrated FETs

Saves Space

The high-voltage synchronous step-down DC-DC con-

troller (OUT1) operates from a voltage up to 36V contin-

uous and is protected from load-dump transients up to

42V. There is a pin-selectable frequency option of either

2.1MHz or a factory-set frequency for 1.05MHz, 525kHz,

420kHz, or 350kHz. The low-voltage, synchronous step-

down DC-DC converters run directly from OUT1 and can

supply output currents up to 3A.

• OUT2 and OUT3 Are Cascaded from OUT1,

Improving Efficiency

• 3A Output Current

• 0.8V to 3.95V Output Voltage

• 25% Lower C

MAX16993

and C

Compared to the

OUT2

OUT3

• Fixed or Resistor-Divider-Adjustable Output Voltage

• 180° Out-of-Phase Operation

The device provides a spread-spectrum enable input

(SSEN) to provide quick improvement in electromagnetic

interference when needed. There is also a SYNC I/O for

providing either an input to synchronize to an external

clock source or an output of the internally generated clock

(see the Selector Guide for the different options available).

The device includes overtemperature shutdown and over-

current limiting. The device also includes individual RE-

SET outputs and individual enable inputs. The individual

RESET1 outputs provide voltage monitoring for all output

channels.

● High Accuracy to Meet ASIL Specification

• ±1% FB Accuracy, ±2% Output-Voltage Accuracy,

and ±0.5% OV/UV Accuracy

• Excellent Load-Transient Performance

● Robust for the Automotive Environment

• Current-Mode Architecture with Forced-PWM and

Skip Modes of Operations

• Frequency Synchronization Input/Output Reduces

System Noise

• Individual Enable Inputs and RESET1 Outputs

• Overtemperature and Short-Circuit Protection

• AEQ-100 Qualified

The MAX20028 is available in a 32-pin (5mm x 5mm x

0.75mm) side-wettable TQFN-EP package and is speci-

fied for operation over the -40°C to +125°C automotive

temperature range.

Applications

● Automotive

● Industrial

● ADAS

Ordering Information and Selector Guide appear at end of data

sheet.

19-7478; Rev 8; 8/22

12 3 4 5 6 7...27

中文翻译

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与MAX20028相关器件

型号	品牌	获取价格	描述	数据表
MAX20029	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029	ADI	获取价格	汽车应用、4/3/4通道、低压、降压型DC-DC转换器
MAX20029ATIAV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029ATIBV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029ATICV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029ATIDV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029ATIFV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029B	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters
MAX20029B	ADI	获取价格	汽车应用、4/3/4通道、低压、降压型DC-DC转换器
MAX20029BATIAV	MAXIM	获取价格	Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters

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