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MAX77734QENPT

更新时间： 2024-09-13 02:50:39
品牌 Logo 应用领域
美信 - MAXIM 集成电源管理电路
页数 文件大小 规格书
76页 1582K
描述
Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li and 150mA LDO

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MAX77734QENPT 数据手册

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EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX77734  
Ultra-Low Power Tiny PMIC with Power Path  
Charger for Small Li+ and 150mA LDO  
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 require 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 Power Selector™  
The 150mA LDO's output is programmable between 0.8V  
2
and 3.975V with I C. The analog MUX enables an exter-  
• JEITA Battery Temperature Monitors for Safe  
Charging  
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.  
● 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). For a similar product with  
additional regulators, see the MAX77650.  
• On-Key Input for LDO Enable and Manual Reset  
Applications  
● Small Size  
● Hearables: Headsets, Headphones, Earbuds  
● Fitness Bands and other Bluetooth Wearables  
● Action Cameras, Wearable/Body Cameras  
● Low-Power Internet of Things (IoT) Gadgets  
• 2.23mm x 1.97mm (0.5mm max height) WLP  
• 20-Bump, 0.4mm Pitch, 4 x 5 Array  
Ordering Information appears at end of data sheet.  
Simplified Application Circuit  
5V DC INPUT  
CHGIN  
4.5V  
12.25mm2 SOLUTION SIZE  
3.43mm  
SYS  
SYSTEM  
V
L
4.7μF  
1μF  
MAX77734  
22μF  
INLDO  
LDO  
GND  
1.8V/3.3V  
OUTPUT  
CCHGIN  
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 5; 7/20  
1234567...76

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