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MAX17532 PDF预览

MAX17532

更新时间: 2023-12-20 18:45:10
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
21页 1259K
描述
42V、100mA、超小、高效、同步降压型DC-DC转换器,空载耗流仅为22μA

MAX17532 数据手册

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EVALUATION KIT AVAILABLE  
MAX17532  
42V, 100mA, Ultra-Small, High-Efficiency,  
Synchronous Step-Down DC-DC Converter  
with 22µA No-Load Supply Current  
General Description  
Benefits and Features  
Reduces External Components and Total Cost  
The MAX17532 high-efficiency, high-voltage, synchronous  
step-down DC-DC converter with integrated MOSFETs  
operates over a 4V to 42V input. The converter can deliv-  
er up to 100mA and generates output voltages from 0.8V  
• No Schottky–Synchronous  
• Internal Compensation for Any Output Voltage  
• Built-In Soft-Start  
• All-Ceramic Capacitors, Compact Layout  
up to 0.9 x V . The feedback (FB) voltage is accurate to  
IN  
within ±1.75% over -40°C to +125°C.  
Reduces Number of DC-DC Regulators to Stock  
• Wide 4V to 42V Input  
The MAX17532 uses peak-current-mode control and can  
be operated in pulse-width modulation (PWM) or pulse  
frequency modulation (PFM) modes.  
• Adjustable 0.8V to 0.9 x VIN Output  
• 100kHz to 2.2MHz Adjustable Switching Frequency  
with External Synchronization  
The device is available in a 10-pin (3mm x 2mm) TDFN  
®
Reduces Power Dissipation  
22μA Quiescent Current  
and 10-pin (3mm x 3mm) μMAX packages. Simulation  
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.  
• High Industrial -40°C to +125°C Ambient Operating  
Temperature Range / -40°C to +150°C Junction  
Temperature Range  
Typical Application Circuits—High-Efficiency 5V, 100mA Regulator  
L1  
220  
V
V
OUT  
5V, 100mA  
IN  
µ
H
6V TO 42V  
IN  
LX  
MAX17532  
C
10µF  
OUT  
C
IN  
F
1
µ
EN/UVLO  
SS  
GND  
R4  
22.1  
V
OUT  
C1  
0.22  
R1  
261k  
µ
F
MODE  
FB  
RT/SYNC  
R2  
49.9k  
R3  
191k  
SWITCHING FREQUENCY = 220kHz  
L1 COILCRAFT LPS5030-224M  
RESET  
C
C
MURATA 10µF/X7R/6.3V/1206 (GRM31CR70J106K)  
MURATA 1μF/X7R/50V/0805 (GRM21BR71H105K)  
OUT  
IN  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
19-7436; Rev 2; 9/17  

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