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The MAX77640/MAX77641 are a low-IQ power solution for applications where size and efficiency are critical. The device integrates a 3-output single-inductor multiple-output (SIMO) buck-boost regulator, a 150mA LDO, and a 3-channel current-sink driver.
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 output is a buck-boost with glitchless transition between buck and boost operation. The SIMO can support >300mA loads (1.8VOUT, 3.7VIN).
The 150mA LDO provides ripple rejection for noise-sensitive 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 are factory-programmable. An I2C serial interface further configures the device.
The MAX77640/MAX77641 are available in a 30-bump wafer-level package (WLP). Total solution size is 16mm2. For a similar product with a battery charger, refer to the MAX77650.
MAX77640, MAX77641: Simplified Application Circuit MAX77640, MAX77641: Simplified Application Circuit Enlarge+
Key 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 Single Cell Li-Ion
0.8V to 5.25V Output Voltage Range (Table 1)
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 heigh) WLP
30-Bump, 0.2mm Pitch, 6 x 5 Array
16mm2 Total Solution Size
MAX77641AEWV+
Applications/Uses
Action Cameras, Wearable/Body Cameras
Hearables: Bluetooth Headphones and Earbuds
Internet of Things (IoT) Devices
Wearables: Fitness, Health, and Activity Monitors
The MAX77640/MAX77641 are a low-IQ power solution for applications where size and efficiency are critical. The device integrates a 3-output single-inductor multiple-output (SIMO) buck-boost regulator, a 150mA LDO, and a 3-channel current-sink driver.
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 output is a buck-boost with glitchless transition between buck and boost operation. The SIMO can support >300mA loads (1.8VOUT, 3.7VIN).
The 150mA LDO provides ripple rejection for noise-sensitive 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 are factory-programmable. An I2C serial interface further configures the device.
The MAX77640/MAX77641 are available in a 30-bump wafer-level package (WLP). Total solution size is 16mm2. For a similar product with a battery charger, refer to the MAX77650.
MAX77640, MAX77641: Simplified Application Circuit MAX77640, MAX77641: Simplified Application Circuit Enlarge+
Key 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 Single Cell Li-Ion
0.8V to 5.25V Output Voltage Range (Table 1)
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 heigh) WLP
30-Bump, 0.2mm Pitch, 6 x 5 Array
16mm2 Total Solution Size
MAX77640AEWV+
MAX77640AEWV+T
Action Cameras, Wearable/Body Cameras
Hearables: Bluetooth Headphones and Earbuds
Internet of Things (IoT) Devices
Wearables: Fitness, Health, and Activity Monitors
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