MAX77681
PRODUCTION3-Output SIMO Buck-Boost Regulator with Power Sequencer and 3μA IQ
Always-On, Low power application mini PMIC. Single inductor with 3 buck-boost outputs
- Part Models
- 2
- 1ku List Price
- Starting From $2.55
Overview
- Single-Inductor, Multiple-Output (SIMO) Extends Battery Life
- 300nA Shutdown Current
- 3.0µA Operating Quiescent Current (3 SIMO Channels On)
- Improves Overall System Efficiency while Reducing Size
- Maintains Regulation without Dropout unlike Traditional Bucks
- Glitchless Buck-Boost Operation
- Compact, High-Efficiency Power Solution
- Three Independent Channels from SIMO Regulator
- 2.7V to 5.5V Input Voltage Range from Single Cell Li-Ion
- 0.8V to 5.25V Output Voltage Range (Table 1)
- Flexible Power Sequencing
- On-Key Input for Hardware Enable
- Reset Output
- Small Size
- 2.75mm x 2.15mm (0.7mm max height) WLP
- 30-Bump, 0.4mm Pitch, 6 x 5 Array
- 15.2mm2 Total Solution Size
The MAX77680/MAX77681 is a 3-channel single-inductor multiple-output (SIMO) buck-boost regulator that regulates three independent rails using only 3µA of quiescent current (IQ). The SIMO improves battery life by replacing inefficient LDOs while being competitive in efficiency to traditional single-output bucks.
The SIMO operates on a input supply between 2.7V and 5.5V. The outputs are independently programmable between 0.8V and 5.25V depending on ordering option. Each output is a buck-boost with glitchless transition between buck and boost operation. The SIMO can support >300mA loads (1.8VOUT, 3.7VIN).
The device integrates a flexible power sequencer (FPS) to control power-up/down order of each output. The default output voltages and sequence can be programmed at the factory. An I2C serial interface is used to further configure the device.
The MAX77680/MAX77681 is available in a 30-bump wafer-level package (WLP). Total solution size is only 15.5mm2. For a similar product with an LDO and battery charger, refer to the MAX77650 data sheet.
Applications
- Action Cameras, Wearable/Body Cameras
- Hearables: Bluetooth Headphones and Earbuds
- Low-Power Internet of Things (IoT) Gadgets
- Wearables: Fitness, Health, and Activity Monitors
Documentation
Data Sheet 1
User Guide 2
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX77681AEWV+ | Wafer-Level Package 5x6 Bump, Full Array | ||
| MAX77681AEWV+T | Wafer-Level Package 5x6 Bump, Full Array |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 3 | ||
| MAX77650 | PRODUCTION | Ultra-Low Power PMIC with 3-Output SIMO and Power Path Charger for Small Li+ |
| MAX77734 | RECOMMENDED FOR NEW DESIGNS | Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO |
| MAX77278 | PRODUCTION | Ultra-Low Power PMIC with 3-Output SIMO, Power Path Charger Optimized for Small Li+, 425mA Current Sink, and 8 GPIOs |
| Switching Regulators & Controllers 1 | ||
| MAX77640 | PRODUCTION | Ultra-Low Power PMIC with 3-Output SIMO, 150mA LDO, and Power Sequencer |
Tools & Simulations
Software Development 2
Evaluation Kits
Evaluation Kit for the MAX77680/MAX77681
Resources
Evaluation Kit for the MAX77680/MAX77681
Resources
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