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MAX77533

更新时间： 2024-11-19 14:57:55
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
33页 1958K
描述
14V输入、1.5A输出、9μA IQ、高效buck转换器

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中文翻译

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MAX77533 数据手册

 浏览型号MAX77533的Datasheet PDF文件第2页浏览型号MAX77533的Datasheet PDF文件第3页浏览型号MAX77533的Datasheet PDF文件第4页浏览型号MAX77533的Datasheet PDF文件第5页浏览型号MAX77533的Datasheet PDF文件第6页浏览型号MAX77533的Datasheet PDF文件第7页 
EVALUATION KIT AVAILABLE  
Click here to ask about the production status of specific part numbers.  
MAX77533  
14V Input, 1.5A High-Efficiency  
Buck Converter with 9μA I  
SUP  
General Description  
Benefits and Features  
The MAX77533 is a synchronous 1.5A step-down DC-DC  
converter optimized for portable 2-cell and 3-cell battery-  
operated and USB-C applications. The converter operates  
on an input supply between 3V and 14V. Output voltage  
is adjustable between 0.8V and 5V in 50mV steps through  
● 1.5A Single Channel Buck Regulator  
● 3V to 14V Input Voltage Range  
● Output Voltage Range  
2
• 0.8V to 5V I C Programmable in 50mV Steps  
Internal Feedback  
• 1.2V, 1.8V, or 3.3V Factory Preset Options Internal  
Feedback  
2
an I C serial interface (internal feedback) or 0.8V to 99%  
of the supply voltage with external feedback resistors.  
Factory-programmed default voltages of 1.2V, 1.8V, and  
3.3V with internal feedback are offered to reduce compo-  
• 0.8V to 99%V  
Resistors  
with External Feedback  
SUP  
nent count for common rails. The device features a low-I  
SKIP mode which allows excellent efficiency at light loads.  
Q
● High-Efficiency, Low Supply Current Extends Battery  
Life  
Dedicated enable and power-OK (POK) pins allow simple  
hardware control. An I C serial interface is optionally used  
• 94% Peak Efficiency at 7.4V  
Inductor)  
, 3.3V  
(2520  
SUP  
OUT  
2
for full configuration and control for dynamic voltage scal-  
ing and system power optimization.  
• 9μA I  
(12V  
, 1.8V  
Internal Feedback  
SUP  
SUP  
OUT  
Version)  
• Selectable Light-Load SKIP and Forced-PWM  
Modes  
Built-in undervoltage lockout (UVLO), output active dis-  
charge, cycle-by-cycle current limit, thermal shutdown,  
and short-circuit protection ensure safe operation under  
abnormal operating conditions.  
● 1MHz or 550kHz Fixed-Frequency Switching  
● Hardware or Software Control  
• Enable Input and Power-OK Output Pins  
• Optional I C Full Control Interface  
The MAX77533 is available in a 12-bump, 0.4mm pitch  
wafer-level package (WLP).  
2
● Protection Features  
• Cycle-by-Cycle Inductor Peak Current Limit  
• Short-Circuit Hiccup Mode, UVLO, and Thermal  
Shutdown Protections  
Applications  
● 2-cell/3-cell High Power Density Supplies  
● Portable Li+/Li-ion Battery Powered Devices  
● Drones, HD Cameras, and Notebook Computers  
● Space-Constrained Portable Electronics  
• 1ms Default Soft-Start  
● Small Size  
• 1.85mm x 1.4mm (0.7mm max. height) WLP  
• 12-Bump, 0.4mm Pitch, 3 x 4 Array  
Ordering Information appears at end of data sheet.  
Simplified Application Circuit  
EFFICIENCY vs. LOAD  
7.4V SUPPLY, 2520 INDUCTOR CASE SIZE  
100  
MAX77533  
3V TO 14V  
DC INPUT  
BST  
SUP  
0.22μF  
90  
4.7μF  
L
LX  
V
OUT  
80  
70  
60  
50  
40  
30  
20  
10  
0
C
1.5A MAX  
OUT  
OUT  
EN  
HARDWARE  
VOUT = 5.0V (EXT FB)  
V OUT = 3.3V (INT FB)  
VOUT = 1.8V (INT FB)  
VOUT = 1.2V (INT FB)  
V OUT = 0.8V (INT FB)  
BIASEN  
SDA  
POK  
POWER-OK  
2.2μF  
OR SOFTWARE  
ENABLE  
V
L
SCL  
FEEDBACK  
V
OUT  
RANGE  
AGND  
PGND  
INTERNAL  
EXTERNAL  
0.8V TO 5V  
0.8V TO 99%VSUP  
SKIP MODE  
0.00001 0.0001 0.001  
0.01  
0.1  
1
10  
14V, 1.5A HIGH-EFFICIENCY BUCK CONVERTER  
OPTIMIZED FOR 2 OR 3 CELL BATTERY APPLICATIONS  
LOAD CURRENT (A)  
19-100790; Rev 2; 5/21  
 
 
 
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