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MAX77932C

更新时间： 2024-11-05 14:58:23
品牌 Logo 应用领域
亚德诺 - ADI 开关转换器
页数 文件大小 规格书
38页 920K
描述
8A双相开关电容转换器

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中文翻译

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MAX77932C 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask about the production status of specific part numbers.  
MAX77932C  
8A Dual-Phase Switched-Capacitor Converter  
General Description  
Benefits and Features  
The MAX77932C is a standalone, dual-phase switched-  
capacitor converter with integrated power switches that  
delivers 8A output current and divides the input voltage  
by two. The IC is suitable for applications that utilize 2S  
Li+ batteries while powering circuitry that operates at 1S-  
equivalent voltage. It is also suitable for applications mi-  
grating from 1S to 2S battery configurations. The IC sim-  
plifies this migration by converting the 2S battery voltage  
to 1S-equivalent output and allows designers to preserve  
the existing downstream 1S power architecture.  
● 8A Switched Capacitor Converter  
● 2S to 1S Battery Voltage Conversion (V  
● Integrated Power Switches  
= V /2)  
OUT  
IN  
● Low I : 30μA Operating, 4μA Shutdown  
Q
● Soft-Start with Programmable Current and Timeout  
● Programmable Input Overvoltage Lockout  
● Programmable Output Overvoltage Lockout  
● Programmable Overcurrent Protection  
● Programmable Switching Frequency 0.25MHz to  
1.5MHz  
● Thermal Alarm and Protection  
● Chip Enable Input  
● Power Good Indicator Output  
The inductorless switched-capacitor converter topology of  
the IC shrinks the overall footprint and reduces the maxi-  
mum height of the circuit. Its high switching frequency, up  
to 1.5MHz, reduces the size and number of capacitors re-  
quired, further minimizing the solution footprint. The IC en-  
sures safe operation with integrated overvoltage, under-  
voltage, overcurrent, and thermal protection, and also min-  
imizes EMI with built-in frequency dithering. In addition to  
the small solution size, lower EMI, and protection features,  
the ICs class-leading peak efficiency of 98.5% simplifies  
thermal design and makes it ideal for consumer, medical,  
and industrial applications.  
● Frequency Dithering  
2
● I C Interface with Interrupt  
Ordering Information appears at end of data sheet.  
Simplified Block Diagram  
MAX77932  
BST1P  
IN  
V
IN  
C
BST  
C
IN  
2
CF1P  
CF1N  
BST1N  
BST2P  
CF2P  
CF2N  
The IC features an I C compatible, 2-wire serial interface  
HVDD  
AVDD  
C
FLY  
consisting of a bidirectional serial data line (SDA) and a  
serial clock line (SCL). The IC supports SCL clock rates  
up to 3.4MHz. The converter parameters such as OCP,  
OVLO or UVLO thresholds, switching frequency, soft-start  
current, and duration are easily adjustable through the  
LDO  
LDO  
C
HVDD  
C
C
BST  
BST  
V
OUT  
C
AVDD  
VIO  
VIO  
SWITCHED  
CAPACITOR  
CONVERTER  
C
VIO  
C
FLY  
2
I C interface. The IC consumes a low quiescent current  
C
BST  
of 30μA when operating and 4μA in shutdown. The IC is  
available in a tiny, lead-free 0.4mm pitch, 2.4mm x 2.8mm  
42-pin wafer-level package (WLP).  
BST2N  
OUT  
IRQB  
SDA  
DIGITAL  
CONTROL/  
2
V
OUT  
μC  
SCL  
C
I
C
OUT  
PGND  
AGND  
PGOOD  
C
LOAD  
EN  
V
IN  
Applications  
● Smartphones and Tablets  
● Ultrabook Computers  
● Chromebooks  
● DSLR and Mirrorless Cameras  
● Power Banks  
● 2S Li+ Battery Applications  
● Smartphone Direct Charging  
● Portable Printers  
● Portable Gaming Devices  
● Mobile Point-of-Sale (mPOS) Devices  
● Two-Way Radios  
19-100851; Rev 0; 7/20  
 
 
 
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