Интегральная схема управления питанием сверхнизкого энергопотребления MAX77640/MAX77641
Maxim Integrated MAX77640/MAX77641 PMICs provide ultra-low power solutions for applications in which size and efficiency are critical. The MAX77640/MAX77641 PMICs integrate a 3-output single-inductor multiple-output (SIMO) buck-boost regulator, a 150mA LDO, a 3-channel current-sink driver, and an I2C serial interface in a compact package with a 16mm2 total solution size.
Capable of supporting >300mA loads (1.8VOUT, 3.7VIN), the 3-output SIMO operates using a 2.7V to 5.5V input voltage, 5.6μA operating current, and 300nA shutdown current. The current sinks can be programmed to blink LEDs in custom patterns. The outputs are independently programmable from 0.8V to 5.25V depending on ordering option. The integrated power sequencer controls the power-up/down order of each output. Each output provides a glitchless transition between the buck and boost operation.
The MAX77640/MAX77641 PMICs are ideally suited for hearables, wearables, and Internet of Things (IoT) Gadgets thanks to the devices' compact size, 3-output SIMO designed to extend battery life, and 150mA LDO that provides ripple rejection in noise-sensitive applications.
Features
Compact, High-Efficiency Power Solution
3-Output Single-Inductor Multiple-Output (SIMO) Buck-Boost Regulator
150mA LDO
3-Channel Current-Sink Driver
Flexible Power Sequencing
GPIO and Reset Output
3-Output SIMO Extends Battery Life
2.7V to 5.5V Input Voltage Range from a Single-Cell Li-Ion
0.8V to 5.25V Output Voltage Range
Supports >300mA loads (1.8VOUT, 3.7VIN)
Improves Overall System Efficiency while Reducing Size
Maintains Regulation without Dropout unlike Traditional Bucks
Glitchless Buck-Boost Operation
Low Quiescent Current
300nA Shutdown Current
5.6μA Operating Current (3 SIMO Channels and LDO On)
Small Size
2.75mm x 2.15mm (0.7mm max. height) WLP
30-Bump, 0.4mm Pitch, 6x5 Array
16mm2 Total Solution Size
Applications
Hearables: Bluetooth Headphones and Earbuds
Wearables: Fitness, Health, and Activity Monitors
Action Cameras, Wearable/Body Cameras
Internet of Things (IoT) Gadgets
Simplified Application Circuit
