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MAX77734

更新时间： 2024-09-13 14:58:07
品牌 Logo 应用领域
亚德诺 - ADI 集成电源管理电路
页数 文件大小 规格书
72页 1243K
描述
带电源路径充电器的超低功耗微型PMIC，适用于小型Li+和150mA LDO

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MAX77734 数据手册

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EVALUATION KIT AVAILABLE  
Click here to ask an associate for production status of specific part numbers.  
Ultra-Low Power Tiny PMIC with Power Path  
Charger for Small Li+ and 150mA LDO  
MAX77734  
General Description  
Benefits and Features  
The MAX77734 is a tiny PMIC for applications where size  
and simplicity are critical. The IC integrates a linear-mode  
Li+ battery charger, low-dropout linear regulator (LDO),  
analog multiplexer, and dual-channel current sink driver.  
● Extends Battery Life  
• 200nA Factory-Ship Mode for Long Shelf Life  
• 500nA Shutdown Current  
• 4.5μA Quiescent Current with LDO Enabled  
• Charger Allows Battery to Relax after Charging  
The charger is designed for small-battery systems that re-  
quire accurate termination as low as 0.375mA. The circuit  
can instantly regulate the system voltage when an input  
source is connected even if the battery is depleted.  
● Linear Charger Optimized for Small Battery Size  
• 7.5mA to 300mA Fast-Charge Current  
• Battery Regulation Voltage from 3.6V to 4.6V  
• Accurate Termination Current as low as 0.375mA  
• Instant-On Functionality provided by Maxim's Smart  
The 150mA LDO's output is programmable between 0.8V  
2
and 3.975V with I C. The analog MUX enables an exter-  
TM  
Power Selector  
nal ADC to perform conversions on battery V&I signals for  
power monitoring. The current sinks are capable of sinking  
12.8mA each and can be programmed for LEDs to blink in  
custom patterns.  
• JEITA Battery Temperature Monitors for Safe  
Charging  
● Highly Integrated  
• 150mA LDO with Power-OK Output  
• Dual-Channel Current Sink for LEDs  
• Analog Multiplexer for Power Monitoring  
• Watchdog Timer  
The MAX77734 is available in a 20-bump, 0.4mm pitch,  
wafer-level package (WLP).  
Applications  
• On-Key Input for LDO Enable and Manual Reset  
● Hearables: Headsets, Headphones, Earbuds  
● Fitness Bands and other Bluetooth Wearables  
● Action Cameras, Wearable/Body Cameras  
● Low-Power Internet of Things (IoT) Gadgets  
● Small Size  
• 2.23mm x 1.97mm (0.5mm max height) WLP  
• 20-Bump, 0.4mm Pitch, 4 x 5 Array  
Simplified Application Circuit  
5V DC INPUT  
CHGIN  
4.5V  
22μF  
12.25mm2 SOLUTION SIZE  
SYSTEM  
SYS  
V
L
4.7μF  
1μF  
MAX77734  
3.43mm  
CCHGIN  
INLDO  
LDO  
GND  
1.8V/3.3V  
OUTPUT  
CVL  
nENLDO  
2.2μF  
ON-KEY  
V
IO  
BATT  
THM  
POKLDO  
SDA  
POWER-OK  
4.7μF  
Li+  
TBIAS  
SCL  
SERIAL HOST  
NTC  
CLDO  
nIRQ  
SYS  
SNK1  
SNK2  
PMLDO  
AMUX  
LDO MODE CONTROL  
TO SYSTEM ADC  
● 0.2mm COMPONENT PITCH  
● PULLUP RESISTORS NOT DRAWN  
● BLANK SPACE NOT EXCLUDED  
POWER PATH LINEAR CHARGER WITH 0.375mA TERMINATION AND DUAL-CHANNEL CURRENT SINKS  
Smart Power Selector is a trademark of Maxim Integrated Products, Inc.  
19-100062; Rev 6; 4/23  
Ordering Information appears at end of datasheet.  
© 2023 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 | © 2023 Analog Devices, Inc. All rights reserved.  
 
 
 
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