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MAX77756DEWL+T PDF预览

MAX77756DEWL+T

更新时间： 2024-09-12 20:08:47
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
34页 982K
描述
Switching Regulator,

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中文翻译

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MAX77756DEWL+T 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
Factory Lead Time：6 weeks风险等级：5.73
模拟集成电路 - 其他类型：SWITCHING REGULATOR峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX77756DEWL+T 数据手册

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EVALUATION KIT AVAILABLE  
MAX77756  
24V Input, 500mA Buck Regulator  
with Dual-Input Power MUX  
General Description  
Benefits and Features  
The MAX77756 is a synchronous 500mA step-down  
DC-DC converter with integrated dual-input power multi-  
plexer (MUX). The converter operates on an input supply  
as low as 3.0V and as high as 24V. Default output volt-  
age is factory-programmed to either 1.8V, 3.3V, or 5.0V.  
Output voltage is further adjustable through external  
● Wide Input Power Supply  
• 3V to 24V Supply Voltage  
• 500mA (max) Output Current  
• 1.8V, 3.3V, or 5.0V Factory-Set V  
2
with  
OUT  
Optional I C Control: 1.5V to 7.5V in 50mV Steps  
• External Feedback Resistor V  
Option (1V to  
OUT  
2
resistors or an I C serial interface.  
99% V  
)
SUP  
• Hardware or Software Enable  
The dual-input power MUX selects the higher voltage  
from two different input sources to power the step-down  
converter. Control circuitry ensures that only one channel  
of the MUX is on at a time to prevent cross-conduction  
between input sources. For single-input applications, the  
MUX can be bypassed and the step-down converter can  
be powered directly from the SUP pin.  
● Dual-Input Power MUX Replaces Common-Cathode  
Diode Arrays  
• Automatic Ideal-Diode ORing Voltage Selector  
• 250mΩ MOSFETs Minimize Power Consumption,  
BOM, and Solution Size  
● Low I Enables Always-On Rails  
Q
The MAX77756 is available in a small 2.33mm x 1.42mm  
(0.7mm max height), 15-bump wafer-level package  
(WLP). For a similar buck converter without a power  
MUX, refer to the MAX77596.  
• 1.5μA Quiescent Current (Only SUP Powered)  
• 19μA Quiescent Current (IN1/IN2 Powered)  
• 88% Peak Efficiency (12V  
, 3.3V  
)
SUP  
OUT  
● Safe and Easy to Use  
• Short-Circuit Hiccup Mode and Thermal Protection  
• 8ms Soft-Start  
• Software-Enabled Spread Spectrum  
• Pin-Programmable Inductor Peak Current Level  
Applications  
● USB Type-C Power Delivery Accessories and  
Devices  
● Notebook and Tablet Computers  
● Home Automation, Low I Smart Hubs  
● Battery-Powered Systems, Backup Battery,  
Uninterruptible Rails  
Ordering Information appears at end of data sheet.  
● Small Size  
Q
• 2.33mm x 1.42mm (0.7mm max height)  
Wafer-Level Package (WLP)  
• 15-Bump, 0.4mm Pitch, 3 x 5 Array  
Simplified Block Diagram  
POWER MUX  
3V TO 24V DC SOURCE 1  
IN1  
- MAIN BATTERY  
- USB PD PROVIDER  
SUP  
BST  
IDEAL  
IN2  
3V TO 24V DC SOURCE 2  
- BACKUP BATTERY  
- SOLAR CELL ARRAY  
10µH  
LX  
V
IO  
V
OUT  
BUCK  
1.5V TO 7.5V  
1.8V, 3.3V, 5.0V DEFAULTS  
500mA MAX  
SDA  
SCL  
EN  
CONVERTER  
HARDWARE OR  
SOFTWARE  
ENABLE  
OUT/ FB  
POK  
DIGITAL  
CONTROL  
POWER OK  
PGND  
AGND, ILIM, BIAS  
PINS NOT DRAWN  
24V, 500mA DC-DC BUCK CONVERTER WITH IDEAL-DIODE “ORING” MUX  
19-8710; Rev 1; 10/17  
1234567...34

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