Datasheet > MAX20022

MAX20022

更新时间： 2023-12-20 18:46:04

品牌	Logo	应用领域
亚德诺 - ADI		DC-DC转换器
页数	文件大小	规格书
16页	940K
描述
4通道、汽车应用低压降压DC-DC转换器

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中文翻译

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数据手册

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MAX20022 数据手册

EVALUATION KIT AVAILABLE

MAX20021/MAX20022

Automotive Quad, Low-Voltage

Step-Down DC-DC Converters

General Description

Beneﬁts and Features

● Quad Step-Down DC-DC Converters with Integrated

The MAX20021/MAX20022 power-management ICs

(PMICs) integrate four low-voltage, high-efficiency, step-

down DC-DC converters. Each of the four outputs is

factory or resistor programmable between 1.0V to 4.0V

and can deliver up to 1.0A of current. The PMICs operate

from 3.0V to 5.5V, making them ideal for automotive point-

of-load and post-regulation applications.

FETs

● Operate from 3.0V to 5.5V Supply Voltage

● 1.0V to 4.0V Fixed or Adjustable Output Voltage

● 2.2MHz (MAX20022) or 3.2MHz (MAX20021)

Switching Frequency

● Four Channels Capable of Delivering Up to 1A Each

● Designed to Improve Automotive EMI Performance

• Forced-PWM Operation

The PMICs feature fixed-frequency PWM-mode operation

with a switching frequency of 2.2MHz or 3.2MHz. High-

frequency operation allows for an all-ceramic capacitor

design and small-size external components. The low-

resistance on-chip switches ensure high efficiency at

heavy loads while minimizing critical inductances, making

the layout a much simpler task with respect to discrete

solutions. Internal current sensing and loop compensation

reduce board space and system cost.

• Two Channels 180º Out-of-Phase

• SYNC Input

• Spread-Spectrum Option

● Soft-Start and Supply Sequencing Reduces Inrush

Current

● Individual Enable Inputs and Power-Good Outputs to

Simplify Sequencing

The PMICs offer a spread-spectrum option to reduce

radiated emissions. Two of the four buck converters oper-

ate 180º out-of-phase with the internal clock. This feature

reduces the necessary input capacitance and improves

EMI as well. All four buck converters operate in constant-

PWM mode outside the AM band. The PMICs offer a

SYNC input to synchronize to an external clock.

● OV/UV Input-Voltage Monitoring

● Overtemperature and Short-Circuit Protection

● 28-Pin (5mm x 5mm x 0.8mm) TQFN-EP Package

● -40ºC to +125ºC Operating Temperature Range

The PMICs provide individual enable inputs and power-

good/reset outputs, as well as factory-programmable

RESET times.

Simpliﬁed Block Diagram

OUT1

The PMICs offer several important protection features

including: input overvoltage protection, input undervoltage

monitoring, input undervoltage lockout, cycle-by-cycle

current limiting, and overtemperature shutdown. The

input undervoltage monitor indicates a brownout condition

by driving PG_ low when the input falls below the UVM

threshold.

MAX20021

10kΩ

EN_

SEL

PG_

CONTROL

SYNC

PV_

SS OSC

1µF

GND

4 CHANNELS

The MAX20021/MAX20022 PMICs are available in a

28-pin TQFN package with an exposed pad and are

specified for operation over the -40ºC to +125ºC automo-

tive temperature range.

2.2µF

1.5µH

LX_

STEP-DOWN

PWM OUT_

1.0V TO 4.0V

OUT_

10µF

UP TO

Applications

●ꢀ Automotive

●ꢀ Industrial

PGND_

OUTS_

0.5A OR 1A

Ordering Information/Selector Guide appear at end of data

sheet.

For related parts and recommended products to use with this part, refer

to www.maximintegrated.com/MAX20021.related.

19-6628; Rev 3; 8/14

12 3 4 5 6 7...16

中文翻译

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与MAX20022相关器件

型号	品牌	获取价格	描述	数据表
MAX20022ATIA/V+	MAXIM	获取价格	Switching Regulator, Current-mode, 1A, 2400kHz Switching Freq-Max, PQCC28,
MAX20026	ADI	获取价格	汽车应用、四通道、低压、降压型DC-DC转换，带低噪声LDO
MAX20026S	ADI	获取价格	汽车应用、四通道、低压、降压型DC-DC转换，带低噪声LDO
MAX20028	ADI	获取价格	双路2.1MHz降压型DC-DC转换器和降压控制器
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

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