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MAX17633BATPT

更新时间： 2024-02-28 22:43:25
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
23页 1472K
描述
4.5V to 36V, 3.5A, High Efficiency, Synchronous Step-Down, DC-DC Converter

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MAX17633BATPT 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask about the production status of specific part numbers.  
MAX17633  
4.5V to 36V, 3.5A, High Efficiency,  
Synchronous Step-Down, DC-DC Converter  
General Description  
Benefits and Features  
● Reduces External Components and Total Cost  
• No Schottky - Synchronous Operation  
• Internal Compensation Components  
The Himalaya series of voltage regulator ICs, power mod-  
ules, and chargers enable cooler, smaller, and simpler  
power supply solutions. The MAX17633 is a high-effi-  
ciency, high-voltage, Himalaya synchronous step-down  
DC-DC converter with integrated MOSFETs operating  
over an input voltage range of 4.5V to 36V. It can deliver  
up to 3.5A current. The MAX17633 is available in three  
variants MAX17633A, MAX17633B, and MAX17633C.  
The MAX17633A and MAX17633B are the fixed 3.3V and  
fixed 5V output voltage parts, respectively. MAX17633C  
is an adjustable output voltage (from 0.9V up to 90% of  
• All-Ceramic Capacitors, Compact Layout  
● Reduces Number of DC-DC Regulators to Stock  
• Wide 4.5V to 36V Input  
• Adjustable Output Range from 0.9V up to 90% of V  
• Delivers up to 3.5A Over the Temperature Range  
• 400kHz to 2.2MHz Adjustable Frequency with  
External Clock Synchronization  
IN  
• Available in a 20-Pin, 4mm × 4mm TQFN Package  
V ) part. Built-in compensation across the output voltage  
IN  
● Reduces Power Dissipation  
• Peak Efficiency > 93%  
range eliminates the need for external components.  
The MAX17633 features peak-current-mode control archi-  
tecture. The device can be operated in forced pulse-width  
modulation (PWM), pulse-frequency modulation (PFM),  
or discontinuous-conduction mode (DCM) to enable high  
efficiency under full-load and light-load conditions.  
• PFM and DCM Modes Enable Enhanced Light-  
Load Efficiency  
• Auxiliary Bootstrap Supply (EXTVCC) for Improved  
Efficiency  
• 2.8μA Shutdown Current  
The feedback-voltage-regulation accuracy over -40°C  
to +125°C for the MAX17633A, MAX17633B, and  
MAX17633C is ±1.3%. Simulation models are available.  
● Operates Reliably in Adverse Industrial Environments  
• Hiccup-Mode Overload Protection  
• Adjustable and Monotonic Startup with Prebiased  
Output Voltage  
Applications  
• Built-in Output-Voltage Monitoring with RESET  
• Programmable EN/UVLO Threshold  
• Overtemperature Protection  
● Industrial Control Power Supplies  
● General-Purpose Point-of-Load  
● Distributed Supply Regulation  
● Base-Station Power Supplies  
● Wall Transformer Regulation  
● High-Voltage Single-Board systems  
• CISPR 22 Class B Compliant  
• Wide -40°C to +125°C Ambient Operating Temper-  
ature Range / -40°C to +150°C Junction Tempera-  
ture Range  
Ordering Information appears at end of data sheet.  
Typical Application Circuit  
V
IN  
6.5V TO 36V  
C1  
2 x 2.2µF  
RT  
IN  
EN/UVLO  
BST  
LX  
MODE/SYNC  
C5  
0.1µF  
L1  
V
OUT  
INTVCC  
6.8µH  
C3  
2.2µF  
C4  
2 x 22µF  
5V,3.5A  
MAX17633B  
SGND  
EXTVCC  
SS  
FB  
C2  
EP  
5600pF  
PGND  
RESET  
19-100305; Rev 2; 7/20  
1234567...23

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