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MAX20029D

更新时间： 2023-12-20 18:44:07
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
18页 267K
描述
汽车应用、4/3/4通道、低压、降压型DC-DC转换器

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MAX20029D 数据手册

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Click here to ask an associate for production status of specific part numbers.  
Automotive Quad/Triple Low-Voltage Step-  
Down DC-DC Converters  
MAX20029/MAX20029B/  
MAX20029C/MAX20029D  
General Description  
Benefits and Features  
The MAX20029/MAX20029B/MAX20029C/MAX20029D  
power-management ICs (PMICs) integrate four low-volt-  
age, high-efficiency, step-down DC-DC converters. Each  
of the four outputs is factory or resistor programmable  
between 1V to 4.0V (MAX20029/MAX20029B) or 0.7V  
to 3.8V (MAX20029C/MAX20029D). The MAX20029/  
MAX20029C has two 0.5A/1A/1.5A channels and two  
0.5A/1.5A channels, while the MAX20029B/MAX20029D  
has two 0.5A/1.5A channels and by combining channels 1  
and 2, a single 2A/3A channel. The PMICs operate from  
3.0V to 5.5V, making them ideal for automotive point-of-  
load and post-regulation applications.  
● Quad Step-Down DC-DC Converters with Integrated  
FETs  
● Operate from 3.0V to 5.5V Supply Voltage  
● 0.7V to 4.0V Fixed or Adjustable Output Voltage  
● 2.2MHz Switching Frequency  
● MAX20029/MAX20029C: Up to Four 1.5A Channels  
● MAX20029B/MAX20029D: Up to One 3A + Two 1.5A  
Channels  
● Designed to Improve Automotive EMI Performance  
• Forced-PWM Operation  
• Two Channels 180° Out-of-Phase  
• SYNC Input  
• Spread-Spectrum Option  
The PMICs feature fixed-frequency PWM-mode operation  
with a switching frequency of 2.2MHz. High-frequency op-  
eration 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.  
● Soft-Start and Supply Sequencing Reduces Inrush  
Current  
● Individual Enable Inputs and Power-Good Outputs  
Simplify Sequencing  
● OV Input-Voltage Monitoring  
● Overtemperature and Short-Circuit Protection  
● 28-Pin (5mm x 5mm x 0.8mm) TQFN-EP Package  
● -40°C to +125°C Operating Temperature Range  
The PMICs offer a spread-spectrum option to reduce radi-  
ated emissions. Two of the four buck converters operate  
180° out-of-phase with the internal clock. This feature re-  
duces 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 in-  
put to synchronize to an external clock.  
The PMICs provide individual enable inputs and power-  
good/ reset outputs, as well as factory-programmable PG  
times.  
The PMICs offer several important protection features in-  
cluding: input overvoltage protection, input undervoltage  
lockout, cycle-by-cycle current limiting, and overtempera-  
ture shutdown.  
The MAX20029/MAX20029B/MAX20029C/MAX20029D  
PMICs are available in a 28-pin TQFN package with an  
exposed pad and are specified for operation over the  
-40°C to +125°C automotive temperature range.  
Applications  
● Automotive  
● Industrial  
19-100083; Rev 12; 4/22  
Ordering Information appears at end of data sheet.  
© 2022 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. | Tel: 781.329.4700 | © 2022 Analog Devices, Inc. All rights reserved.  
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