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MAX17541G PDF预览

MAX17541G

更新时间: 2024-11-16 14:58:03
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
17页 1051K
描述
42V、500mA、超小尺寸、高效率、同步、降压型DC-DC转换器

MAX17541G 数据手册

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MAX17541G  
42V, 500mA, Ultra-Small, High-Efficiency,  
Synchronous Step-Down DC-DC Converter  
General Description  
Benefits and Features  
●ꢀ ReducesꢀExternalꢀComponentsꢀandꢀTotalꢀCost  
• No Schottky-Synchronous Operation  
The MAX17541G high-efficiency, high-voltage, synchronous  
step-down DC-DC converter with integrated MOSFETs  
operates over 4.5V to 42V input. The converter can  
deliver up to 500mA and generates output voltages from  
• All-CeramicꢀCapacitors,ꢀUltra-CompactꢀLayout  
●ꢀ ReducesꢀNumberꢀofꢀDC-DCꢀRegulatorsꢀtoꢀStock  
0.9V up to 0.92 x V . The feedback (FB) voltage is accurate  
IN  
• Wide 4.5V to 42V Input  
• Adjustable 0.9V to 92%V Output  
to within ±1.7% over -40°C to +125°C.  
IN  
• Delivers up to 500mA  
ReducesꢀPowerꢀDissipation  
• Peak Efficiency > 90%  
The MAX17541G uses peak-current-mode control with  
pulse-width modulation (PWM) and operates with fixed  
600kHz switching frequency at any load. The device  
is available in a 10-pin (3mm x 2mm) TDFN package.  
Simulation models are available.  
ShutdownꢀCurrentꢀ=ꢀ0.9μAꢀ(typ)  
●ꢀ OperatesꢀReliablyꢀinꢀAdverseꢀIndustrialꢀEnvironmentsꢀ  
Hiccup-ModeꢀCurrentꢀLimit,ꢀSinkꢀCurrentꢀLimit,ꢀ  
and Autoretry Startup  
Applications  
●ꢀ IndustrialꢀProcessꢀControlꢀ  
●ꢀ HVACꢀandꢀBuildingꢀControlꢀ  
●ꢀ BaseꢀStation,ꢀVOIP,Telecomꢀ  
●ꢀ HomeꢀTheatreꢀꢀ  
●ꢀ Battery-PoweredꢀEquipment  
●ꢀ General-PurposeꢀPointꢀofꢀLoad  
• Built-In Output-Voltage Monitoring (RESET Pin)  
ProgrammableꢀEN/UVLOꢀThreshold  
• Adjustable Soft-Start and Prebiased Power-Up  
• High Industrial -40°C to +125°C Ambient Operating  
TemperatureꢀRange/-40°Cꢀtoꢀ+150°CꢀJunctionꢀ  
TemperatureꢀRange  
Ordering Information appears at end of data sheet.  
MAX17541G Application Circuit (5V Output, 500mA Maximum Load Current)  
L1  
47µH  
V
OUT  
5V, 500mA  
V
IN  
V
LX  
IN  
C1  
1µF  
C4  
R1  
3.32M  
10µF  
1
2
3
PGND  
EN/UVLO  
JU1  
R2  
681k  
R4  
82.5kΩ  
MAX17541G  
GND  
V
CC  
C2  
1µF  
FB/VO  
SS  
C3  
R5  
3300pF  
18.2kΩ  
COMP  
RESET  
RESET  
R3  
21.5kΩ  
C9  
22pF  
L1 = 74404054470 OR  
XFL6060-473  
C5  
3300pF  
19-7672 Rev 1; 7/16  

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