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MAX17530

更新时间： 2024-09-27 01:21:59
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
19页 1080K
描述
Reduces Power Dissipation

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中文翻译

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MAX17530 数据手册

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MAX17530  
42V, 25mA, Ultra-Small, High-Efficiency,  
Synchronous Step-Down DC-DC Converter  
with 22µA No-Load Supply Current  
General Description  
Features and Benefits  
● Reduces External Components and Total Cost  
The  
MAX17530  
high-efficiency,  
high-voltage,  
synchronous step-down DC-DC converter with integrated  
MOSFETs operates over a 4V to 42V input. The converter  
can deliver up to 25mA and generates output voltages  
• No Schottky–Synchronous  
• Internal Compensation for Any Output Voltage  
• Built-In Soft-Start  
• All-Ceramic Capacitors, Compact Layout  
from 0.8V up to 0.9 x V . The feedback (FB) voltage is  
IN  
accurate to within ±1.75% over -40°C to +125°C.  
● Reduces Number of DC-DC Regulators to Stock  
The MAX17530 uses peak-current-mode control. The  
device can be operated in pulse-width modulation (PWM)  
or pulse-frequency modulation (PFM) modes.  
• Wide 4V to 42V Input  
• Adjustable 0.8V to 0.9 x V Output  
• 100kHz to 2.2MHz Adjustable Switching Frequency  
with External Synchronization  
IN  
The device is available in a 10-pin (3mm x 2mm) TDFN  
®
and 10-pin (3mm x 3mm) μMAX packages. Simulation  
● Reduces Power Dissipation  
• 22µA Quiescent Current  
models are available.  
• Peak Efficiency > 90%  
• PFM Enables Enhanced Light-Load Efficiency  
• 1.2µA Shutdown Current  
Applications  
● Industrial Sensors and Process Control  
● High-Voltage LDO Replacement  
● Battery-Powered Equipment  
● Operates Reliably in Adverse Environments  
• Peak Current-Limit Protection  
● HVAC and Building Control  
• Built-In Output-Voltage Monitoring RESET  
• Programmable EN/UVLO Threshold  
• Monotonic Startup into Prebiased Load  
• Overtemperature Protection  
Ordering Information appears at end of data sheet.  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
• -40°C to +125°C Operation  
Typical Application Circuits—High-Efficiency 5V, 25mA Regulator  
L1  
1m  
V
V
OUT  
5V, 25mA  
IN  
H
6V TO 42V  
IN  
LX  
C
IN  
F
C
10µF  
MAX17530  
OUT  
1
µ
EN/UVLO  
GND  
R4  
22.1  
SS  
Ω
V
OUT  
FB  
C1  
0.22  
R1  
261k  
µ
F
MODE  
Ω
RT/SYNC  
R2  
49.9k  
Ω
R3  
191k  
L1 COILCRAFT LPS5030-105M  
Ω
C
MURATA 10µF/X7R/6.3V/0805 (GRM21BR70J106K)  
MURATA 1μF/X7R/50V/1206 (GRM31MR71H105K)  
RESET  
OUT  
C
IN  
19-7381; Rev 0; 11/14  
1234567...19

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