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MAX17525

更新时间： 2024-09-27 14:58:15
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亚德诺 - ADI /
页数 文件大小 规格书
21页 810K
描述
高精度、可调节功率抑制器

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MAX17525 数据手册

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Evaluation Kit  
Available  
Design  
Resources  
Tools  
and Models  
Support  
Click here to ask an associate for production status of specific part numbers.  
High-Accuracy, Adjustable Power Limiter  
MAX17525  
General Description  
Benefits and Features  
● Robust, High-Power Protection Reduces System  
The Olympus series of ICs are the industry’s smallest  
and robust integrated system protection solutions. The  
MAX17525 adjustable overvoltage, undervoltage, and  
overcurrent protection device guards systems against  
overcurrent faults in addition to positive overvoltage and  
reverse-voltage faults. When used with an optional external  
pMOSFET, the device also protects downstream circuitry  
Downtime  
• Wide Input-Supply Range: +5.5V to +60V  
• Programmable Input-Supply Overvoltage Setting  
Up To 40V  
• -60V Negative Input Tolerance with External  
pFET (for -(60 + V  
) External pFET Rating)  
OUT  
• Low 31mΩ (typ) R  
from voltage faults up to +60V, -60V (for -(60V +V  
)
ON  
OUT  
• Reverse Current-Blocking Protection with External  
pFET  
external pFET rating). The device features a low, 31mΩ,  
on-resistance integrated FET.  
During startup, the MAX17525 is designed to charge large  
capacitances on the output in a continuous mode for applica-  
tions where large reservoir capacitors are used on the inputs  
to downstream devices. Two additional part options that fea-  
ture a dual-stage, current-limit mode in which the current is  
continuously limited to 1.5x and 2x the programmed limit are  
available upon request. These options enable faster charg-  
ing of large load capacitances during startup.  
The MAX17525 also features reverse-current and  
overtemperature protection. The device is available in a  
20-pin (5mm x 5mm) TQFN package and operate over  
the -40°C to 125°C temperature range.  
● Enables Fast Startup and Brownout Recovery  
• Thermal Foldback Current-Limit Protection  
• 1.5x, 2x Startup Current Limit Options  
● Flexible Design Enables Reuse and Less  
Requalification  
• Adjustable OVLO and UVLO Thresholds  
• Programmable Forward Current Limit From 0.6A  
to 6A with ±15% Accuracy Over Full Temperature  
Range  
• Normal and High-Voltage Enable Inputs  
(EN and HVEN)  
• Protected External pFET Gate Drive  
Applications  
● Saves Board Space and Reduces External BOM  
Count  
● Industrial Power Systems  
● Control and Automation  
● Motion System Drives  
● Human Machine Interfaces  
● High-Power Applications  
• 20-Pin 5mm x 5mm TQFN Package  
• Integrated nFET  
Ordering Information appears at end of data sheet.  
Typical Application Circuit  
V
IN  
*R1, R2, R3, AND R4 ARE ONLY  
REQURED FOR ADJUSTABLE  
UVLO/OVLO FUNCTIONALITY.  
OTHERWISE, TIE THE PIN TO  
GND TO USE THE INTERNAL,  
PREPROGRAMMED  
C
IN  
C
IN_IC  
GP  
IN  
IN IN IN IN  
OUT  
V
V
IN  
R1*  
R3*  
SYSTEM  
CONTROLLER  
UVLO  
POWER  
THRESHOLD.  
OUT  
OUT  
PROTECTED  
POWER  
220kΩ  
R2*  
R4*  
SYSTEM  
INPUT  
ADC  
MAX17525  
C
OUT  
IN  
OUT  
R
SETI  
OVLO  
HVEN  
OUT  
SETI  
RIPEN  
FLAG  
EN  
GND  
ENB  
FAULT  
EN  
HVEN  
x
CLTS2  
10kΩ  
CLTS1  
GND  
19-8572; Rev 4; 3/22  
One Analog Way, Wilmington, MA 01887 U.S.A.  
|
Tel: 781.329.4700  
|
© 2022 Analog Devices, Inc. All rights reserved.  
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