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MAX77640EWV+

更新时间： 2024-10-01 06:42:55
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描述
Power Supply Support Circuit,

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中文翻译

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MAX77640EWV+ 数据手册

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EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX77640/MAX77641  
Ultra-Low Power PMIC with 3-Output SIMO,  
150mA LDO, and Power Sequencer  
General Description  
Benefits and Features  
The MAX77640/MAX77641 are a low-I power solution  
Q
● Compact, High-Efficiency Power Solution  
• 3-Output Single-Inductor Multiple-Output (SIMO)  
Buck-Boost Regulator  
for applications where size and efficiency are critical. The  
device integrates a 3-output single-inductor multiple-out-  
put (SIMO) buck-boost regulator, a 150mA LDO, and a  
3-channel current-sink driver.  
• 150mA LDO  
• 3-Channel Current-Sink Driver  
• Flexible Power Sequencing  
• GPIO and Reset Output  
The SIMO operates on an input between 2.7V and 5.5V.  
The outputs are independently programmable between  
0.8V and 5.25V depending on ordering option. Each out-  
put is a buck-boost with glitchless transition between buck  
and boost operation. The SIMO can support >300mA  
● 3-Output SIMO Extends Battery Life  
• 2.7V to 5.5V Input Voltage Range from Single Cell  
Li-Ion  
loads (1.8V  
, 3.7V ).  
• 0.8V to 5.25V Output Voltage Range (Table 1)  
OUT  
IN  
• Supports >300mA loads (1.8V  
• Improves Overall System Efficiency while Reducing  
Size  
• Maintains Regulation without Dropout unlike  
Traditional Bucks  
• Glitchless Buck-Boost Operation  
, 3.7V )  
OUT  
IN  
The 150mA LDO provides ripple rejection for noise-sen-  
sitive applications. The current sinks can be programmed  
to blink LEDs in custom patterns. The device integrates  
a power sequencer to control power-up/down order of  
each output. Default output voltages and sequence order  
2
are factory-programmable. An I C serial interface further  
configures the device.  
● Low Quiescent Current  
• 300nA Shutdown Current  
• 5.6μA Operating Current (3 SIMO Channels and  
LDO On)  
The MAX77640/MAX77641 are available in a 30-bump  
wafer-level package (WLP). Total solution size is 16mm .  
For a similar product with a battery charger, refer to the  
MAX77650.  
2
● Small Size  
• 2.75mm x 2.15mm (0.7mm max heigh) WLP  
• 30-Bump, 0.4mm Pitch, 6 x 5 Array  
• 16mm Total Solution Size  
Applications  
2
● Hearables: Bluetooth Headphones and Earbuds  
● Wearables: Fitness, Health, and Activity Monitors  
● Action Cameras, Wearable/Body Cameras  
● Internet of Things (IoT) Gadgets  
Ordering Information appears at end of data sheet.  
Simplified Application Circuit  
2.7V TO 5.5V  
DC INPUT  
MAX77640  
IN_SBB  
2
16mm SOLUTION SIZE  
SYS  
V
SYS  
4.15mm  
IN_LDO  
SBB0  
2.05V  
1.2V  
3.3V  
GND  
C
LDO  
SBB1  
SBB2  
V
SYS  
C
SBB0  
C
SBB1  
C
SBB2  
SYSTEM  
RESOURCES  
ONKEY  
nEN  
PGND  
GPIO  
GPIO  
1.5µH  
LXA  
LXB  
V
IO  
C
SYS  
LDO  
1.85V  
BST  
SYS  
V
/POWER  
IO  
L
SDA  
SCL  
nRST  
SDA  
SCL  
nRST  
nIRQ  
LED0  
LED1  
LED2  
nIRQ  
● 0.2mm COMPONENT PITCH  
● PULLUP RESISTORS NOT DRAWN  
PROCESSOR  
PWR_HLD  
PWR_HLD  
19-100307; Rev 2; 8/18  
 
 
 
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