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MAX77541

更新时间： 2024-10-03 14:57:19
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
69页 1853K
描述
5.5VIN/6A双相高效降压转换器

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MAX77541 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask an associate for production status of specific part numbers.  
MAX77541  
5.5V /6A, Dual-Phase High-Efficiency Buck  
IN  
Converter  
General Description  
Benefits and Features  
The MAX77541 is a high-efficiency step-down converter  
with two 3A switching phases for single-cell Li+ battery  
● 2.2V to 5.5V Input Voltage Range  
● 0.3V to 5.2V Output Voltage Range  
● Two 3A Bucks (1Φ) or One 6A Buck (2Φ)  
and 5V  
systems. It uses an adaptive COT (constant  
DC  
on-time) current-mode control architecture and the two 3A  
switching phases can be configured as either one (2Φ, 6A)  
or two (1Φ, 3A each) outputs. The output voltages are pre-  
● ±0.5% V  
● 91% Peak Efficiency (3.8V , 1.1V  
Accuracy (Default V  
at 25°C)  
, 1.6MHz)  
OUT  
OUT  
OUT  
IN  
● Auto SKIP/PWM Transition and Low-Power Mode  
● Drop-Out Operation with 98% of Max. Duty Cycle  
● Programmable Soft-Start/Soft-Stop and Ramp-up/  
Ramp-down Slew-rates  
● Prebiased Startup and Active Output Discharge  
● Programmable Inductor Peak Current Limits for  
Solution Size Optimization  
● 0.5/1.0/1.6MHz Nominal Switching Frequency  
● Spread-Spectrum Modulation for EMI Reduction  
● Internal/External Frequency Tracking  
2
set with resistors and are further adjustable through an I C  
compatible interface. With 91% peak efficiency, low quies-  
cent current, and compact solution size, the MAX77541 is  
ideal for battery powered, space-constraint equipment.  
Programmable switching frequency, frequency tracking,  
and spread-spectrum allow easier system optimization for  
noise-sensitive applications. Dedicated EN, POK, and FP-  
WM pins provide options for direct hardware control, while  
more programmable options such as soft-start/stop and  
● Default V  
and Phase Configuration Setting by  
and R  
SEL2  
2
OUT  
ramp-up/down slew-rates are available through I C. An ar-  
R
SEL1  
2
ray of built-in protections ensures safe operation under ab-  
normal operating conditions.  
● I C Slave ADDR, ILIM, and F  
Preset by R  
SW  
CFG  
● Dedicated ENx, POKx and FPWMx for each Buck  
● UVLO, Thermal Shutdown, and Short-circuit  
Protection  
● High-Speed I C Serial I/F  
● Available in 30-WLP (2.51mm x 2.31mm x 0.7mm)  
and 24-FC2QFN (3mm x 3mm) Packages  
Applications  
● Single-Cell Li+ and 5V  
Systems  
2
DC  
● Gaming Consoles and VR/AR Headsets  
● Microprocessors, FPGAs, DSPs, and ASICs  
● Network Switches and Routers  
2
● Less than 55mm Total Solution Size with 2520  
Inductors  
Typical Applications Circuit  
DC POWER SOURCE  
SYS  
DC POWER SOURCE  
(2.2V TO 5.5V)  
IN1  
(2.2V TO 5.5V)  
V
V
L
BST1  
3A  
3A  
1Φ  
+
V
IO  
DD  
LX1  
PGND1  
V
(0.3V TO 5.2V)  
OUT1  
MAX77541  
MULTI-PHASE  
BUCK  
1Φ  
IRQB  
SCL  
SDA  
I2C_EN  
EN1  
SNS1  
IN2  
DC POWER SOURCE  
(2.2V TO 5.5V)  
PHASE-CONFIGURABLE  
(SINGLE OR DUAL-OUTPUT)  
BST2  
EN2  
LX2  
V
(0.3V TO 5.2V)  
OUT2  
CFG  
SEL1  
SEL2  
AGND  
NC  
PGND2  
SNS2  
POK1  
POK2  
FPWM1  
FPWM2  
2Φ  
6A  
1+1  
CONFIGURATION  
19-101174; Rev 1; 5/22  
Ordering Information appears at end of data sheet.  
© 2022 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 | © 2022 Analog Devices, Inc. All rights reserved.  
 
 
 
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