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MAX17502EATB+ PDF预览

MAX17502EATB+

更新时间： 2024-09-24 12:20:51
品牌 Logo 应用领域
美信 - MAXIM 转换器
页数 文件大小 规格书
17页 3258K
描述
60V, 1A, Ultra-Small, High-Efficiency,Synchronous Step-Down DC-DC Converter

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MAX17502EATB+ 数据手册

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19-6245; Rev 0; 5/12  
General Description  
Benefits and Features  
S Eliminate External Components and Reduce Total  
Cost  
The MAX17502 high-efficiency, high-voltage, synchro-  
nous step-down DC-DC converter operates over a 4.5V  
to 60V input voltage range and is designed for a wide  
range of applications. The ultra-wide-input operation  
makes it ideal for not only industrial control and build-  
ing automation, but also base stations, telecom, home  
entertainment, and automotive applications. It delivers  
output currents up to 1A, at output voltages of 3.3V and  
5V. The output voltage is accurate within Q1.6% over  
temperature. The device operates over the -40NC to  
+125NC industrial temperature range and is available in  
a tiny, 10-pin (3mm x 2mm) TDFN lead(Pb)-free package  
with an exposed pad.  
The device features peak-current-mode control with  
pulse-width modulation (PWM). The PWM operation  
ensures constant switching frequency at all operat-  
ing conditions. The low-resistance, on-chip, pMOS/  
nMOS switches ensure high efficiency at full load while  
minimizing the critical inductances, making the layout a  
much simpler task compared to discrete solutions.  
The device offers fixed switching frequency of 600kHz.  
To reduce input inrush current, the device offers an  
adjustable voltage soft-start feature with an external  
capacitor from the SS pin to ground. The device also  
incorporates an output enable/undervoltage lockout pin  
(EN/UVLO) that allows the user to turn on the part at  
the desired input-voltage level. An open-drain RESET  
pin provides a delayed power-good signal to the sys-  
tem upon achieving successful regulation of the output  
voltage. The device supports hiccup-mode current-limit  
protection for low power dissipation under overload and  
output short-circuit conditions.  
No Schottky-Synchronous Operation for High  
Efficiency and Reduced Cost  
Internal Compensation for Ultra-Compact  
Layout  
All-Ceramic Capacitors  
S Reduce Number of DC-DC Regulators to Stock  
Wide 4.5V to 60V Operating-Voltage Range  
Fixed 3.3V and 5V Output  
Delivers Up to 1A Over Temperature  
600kHz Switching Frequency  
S Reduce Power Dissipation  
Peak Efficiency > 90%  
Shutdown Current = 1µA (typ)  
S Operate Reliably in Adverse Industrial  
Environments  
Hiccup-Mode Current Limit and Autoretry Startup  
Built-In Output-Voltage Monitoring (Open-Drain  
RESET Pin)  
Resistor-Programmable UVLO Threshold  
Increased Safety with Adjustable Soft-Start and  
Prebiased Power-Up  
Optional Adjustable Output and PFM  
(Available Upon Factory Request)  
-40NC to +125NC Industrial Temperature Range  
Typical Operating Circuit  
Applications  
L1  
22µH  
Industrial Process Control  
HVAC and Building Control  
General-Purpose Point-of-Load  
Base Station, VOIP, Telecom  
Home Theater  
V
V
OUT  
5V, 1A  
IN  
24V 20%  
V
LX  
IN  
C1  
2.2µF  
1210  
C4  
10µF, 10V  
1210  
R1  
3.32MI  
1
2
3
PGND  
EN/UVLO  
JU1  
R2  
866kI  
MAX17502F  
GND  
Automotive  
V
CC  
C2  
1µF  
Battery-Powered Equipment  
FB/VO  
SS  
Ordering Information appears at end of data sheet.  
C3  
3300pF  
For related parts and recommended products to use with this part,  
N.C.  
RESET  
RESET  
refer to www.maxim-ic.com/MAX17502.related  
����������������������������������������������������������������� Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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MAX17502EATB+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX17502GATB+ MAXIM

类似代替

 60V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter
MAX17502EATB+T MAXIM

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 Switching Regulator/Controller, Current-mode, 1A, 640kHz Switching Freq-Max, BICMOS, PDSO1

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 		4.5V–60V、3.5A、高效率、 同步降压DC-DC转换器，带内部补偿
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