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MAX20029DATIAV

更新时间： 2024-01-13 03:36:08
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
17页 677K
描述
Automotive Quad/Triple Low-Voltage Step-Down DC-DC Converters

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MAX20029DATIAV 数据手册

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EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX20029/MAX20029B/  
MAX20029C/MAX20029D  
Automotive Quad/Triple Low-Voltage  
Step-Down DC-DC Converters  
General Description  
Benefits and Features  
● Quad Step-Down DC-DC Converters with Integrated  
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.  
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:ꢀUpꢀtoꢀFourꢀ1.5AꢀChannels  
●ꢀ MAX20029B/MAX20029D:ꢀUpꢀtoꢀOneꢀ3Aꢀ+ꢀTwoꢀ1.5Aꢀ  
Channels  
● Designed to Improve Automotive EMI Performance  
• Forced-PWM Operation  
• Two Channels 180º Out-of-Phase  
• SYNC Input  
The PMICs feature fixed-frequency PWM-mode operation  
with a switching frequency of 2.2MHz. 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.  
• Spread-Spectrum Option  
● Soft-Start and Supply Sequencing Reduces Inrush  
Current  
● Individual Enable Inputs and Power-Good Outputs to  
Simplify Sequencing  
● OV 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 offer a spread-spectrum option to reduce  
radiated emissions. Two of the four buck converters  
operate 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.  
Ordering Information appears at end of data sheet.  
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 including: input overvoltage protection, input  
undervoltage lockout, cycle-by-cycle current limiting, and  
overtemperature 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  
-40ºC to +125ºC automotive temperature range.  
Applications  
●ꢀ Automotive  
●ꢀ Industrial  
19-100083; Rev 11; 2/20  
1234567...17

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