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MAX77812

更新时间： 2024-11-05 14:57:59
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 3288K
描述
20A、用户可配置、四相、Buck转换器

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MAX77812 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask an associate for production status of specific part numbers.  
20A User-Configurable  
Quad-Phase Buck Converter  
MAX77812  
General Description  
Benefits and Features  
The MAX77812 is a quad-phase high-efficiency step-  
down (buck) converter capable of delivering up to 20A  
of maximum current. Programmable startup/shutdown  
sequence and user-selectable phase configurations make  
the MAX77812 ideal for powering the latest generations  
of processors. With high-efficiency and small solution  
size, the MAX77812 is optimized for space constrained  
single-cell battery powered applications.  
● 20A Maximum Output Current (5A per Phase)  
● V Range: 2.5V to 5.5V  
IN  
● V  
Range: 0.250V to 1.525V with 5mV Steps  
OUT  
±0.5% Initial Output Accuracy with Differential Sensing  
● 5 User-Selectable Phase Configurations  
● 91% Peak Efficiency (V = 3.8V, V  
●
= 1.1V)  
OUT  
IN  
● Auto (SKIP/PWM) and Forced PWM Modes  
● Enhanced Load Transient Response  
The MAX77812 uses an adaptive on-time PWM control  
scheme and it has SKIP and low-power SKIP modes for  
improved light-load efficiency. A programmable current  
limit reduces the overall solution footprint by optimizing  
inductors size. Differential sensing provides high output  
voltage accuracy, while enhanced transient response  
(ETR) allows fast output voltage adjustments to load tran-  
sients. Programmable soft-start/stop and ramp-up/down  
slew rate provides control over an inrush current as the  
regulator transitions between operating states.  
● Programmable Ramp-Up/Down Slew Rates  
● Programmable Startup/Shutdown Sequence  
● UVLO, Short-Circuit, and Thermal Protections  
● 2 User-Programmable General-Purpose Inputs  
2
● 3.4MHz High Speed I C and 30MHz SPI Interface  
● 3.408mm x 3.368mm, 64-Bump WLP Package  
2
A 3.4MHz high-speed I C or 30MHz SPI interface with  
Applications  
● CPU/GPU, FPGAs, and DSPs Power Supply  
● AR/VR Headsets and Game Consoles  
● Li-ion Battery Powered Equipment  
dedicated logic inputs provide full configurability and con-  
trol for system power optimization.  
The MAX77812 is available in 3.408mm x 3.368mm,  
64-bump 0.4mm pitch wafer-level package (WLP).  
● Space Constrained Portable Electronics  
Ordering Information appears at end of data sheet.  
Typical Application Circuit  
V
V
SYS  
2.5V to 5.5V  
SYS  
SYS  
DGND  
AGND  
IN12  
1Φ  
+
1Φ  
+
1Φ  
+
1Φ  
5A  
5A  
2.5V to 5.5V  
0.25V to 1.525V  
10A  
LX1  
SNS1P  
SNS1N  
PGND1  
5A  
5A  
2Φ  
+
1Φ  
+
MAX77812  
MULTI-PHASE  
BUCK  
CE  
10A  
V
VIO  
VIO  
5A  
5A  
LX2  
SNS2P  
SNS2N  
PGND2  
1Φ  
2Φ  
+
10A  
10A  
IRQB  
SCL  
SDA/MOSI  
MISO  
SCS  
3Φ  
+
V
SYS  
IN34  
2Φ  
15A  
5A  
2.5V to 5.5V  
I2C_SPI_SEL  
EN  
LPM  
WDTRSTB_IN  
GPI0  
GPI1  
PH_CFG0  
PH_CFG1  
PH_CFG2  
0.25V to 1.525V  
5A  
LX3  
SNS3P  
SNS3N  
PGND3  
LX4  
SNS4P  
SNS4N  
PGND4  
1Φ  
4Φ  
20A  
0.25V to 1.525V  
5A  
PHASE-CONFIGURABLE  
QUAD-OUTPUT  
V
SYS  
2.5V to 5.5V  
19-8541; Rev 12; 10/22  
©
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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