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MAX77324

更新时间： 2024-09-29 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
14页 1505K
描述
4.8VIN、1.5A、高效、超小尺寸Buck转换器

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MAX77324 数据手册

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Evaluation Kit  
Available  
Design  
Resources  
Tools  
and Models  
Support  
Click here to ask an associate for production status of specific part numbers.  
4.8V , 1.5A High-Efficiency,  
Ultra-Small Buck Converter  
MAX77324  
IN  
General Description  
The MAX77324 is a single channel high-efficiency syn-  
Benefits and Features  
● 1.5A Output Current Step-down Converter  
chronous step-down (buck) converter capable of deliver-  
ing up to 1.5A of current. With a 6.89mm total solution  
size, up to 93% efficiency, and 40µA quiescent current,  
it is optimized for portable space constrained battery-  
operated applications.  
● 2.5V to 4.8V V Range  
IN  
2
● 0.6V to 2V Adjustable V  
Range, ±2% Accuracy  
OUT  
● MAX77324EWTAD+  
• Skip Mode for High Light-Load Efficiency  
• 40μA Quiescent Current  
The device operates over a 2.5V to 4.8V input volt-  
age range to support Li+ battery powered applications.  
The output voltage is adjustable from 0.6V to 2V, with  
a better than 2% accuracy over the whole temperature  
range. The device uses constant-on-time PWM control  
scheme. A nominal 2MHz switching frequency reduces  
the overall solution footprint by use of small 0603 induc-  
tor. An automatic SKIP mode is also implemented to  
improve the light-load efficiency for MAX77324EWTAD+.  
MAX77324GEWTAD+ operates in PWM mode for all  
load conditions. The device provides low output voltage  
ripple, excellent line and load regulation, and transient  
response. A dedicated enable pin allows for simple hard-  
ware control.  
● MAX77324GEWTAD+  
• PWM Mode Only  
● 93% Peak Efficiency (3.8V , 1.8V  
)
IN  
OUT  
● 1μA Shutdown Current  
● 2MHz Nominal Switching Frequency  
● Enable Pin for Direct Hardware Control  
● Cycle-by-Cycle Inductor Current Limit  
● UVLO, Soft-Start, Active Output Discharge,  
Short-Circuit, and Thermal Shutdown Protections  
● 1.22mm x 0.85mm, 6-Bump WLP  
2
• 6.89mm Total Solution Area  
Built-in undervoltage lockout (UVLO), soft-start, active  
output discharge, cycle-by-cycle short-circuit, and thermal  
shutdown protections insure safe operations under abnor-  
mal operating conditions.  
• Uses Small 0603 0.47μH Inductor  
Applications  
● 1-Cell Battery Powered Equipment  
● Portable/Wearables  
The device is available in a space-saving 1.22mm x  
0.85mm, 6-bump wafer-level package (WLP).  
● Internet of Things (IoT) Devices  
● Space Constrained Equipment  
Ordering Information appears at end of data sheet.  
1-Cell to Core Voltage Buck Converter Application Circuit  
6.89mm2 SOLUTION SIZE  
L
L
V
OUT  
0.47μH  
0.6V TO 2.0V  
IN  
LX  
2.5V TO 4.8V  
DC SOURCE  
C
10μF  
IN  
C
OUT  
22μF  
MAX77324  
C
IN  
C
TOP  
R
*
TOP  
220pF  
FB  
ENABLE  
EN  
R
BOT  
PGND  
AGND  
R
R
TOP  
BOT  
30.1kΩ, 1%  
2.12mm  
*CHOOSE R  
VALUE BASE ON V , REFER TO TABLE 1  
OUT  
TOP  
19-100206; Rev 3; 4/23  
©
2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.  
One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 © 2023 Analog Devices, Inc. All rights reserved.  
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