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Ultra-Low Power PMIC with 3-Output SIMO, 150mA LDO, and Power Sequencer

Always-On, Low-Power Application Mini PMIC. Single Inductor with 3 Buck-Boost Outputs, LDO, and Current Sinks

Product Details

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.

Design Solution: Choose a Tailored SIMO PMIC for Your Portable Design ›

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, 0.4mm Pitch, 6 x 5 Array
    • 16mm2 Total Solution Size

Applications/Uses

  • Action Cameras, Wearable/Body Cameras
  • Hearables: Bluetooth Headphones and Earbuds
  • Internet of Things (IoT) Devices
  • Wearables: Fitness, Health, and Activity Monitors
Parametric specs for Multifunction PMICs
VIN (V) (min) 2.7
VIN (V) (max) 5.5
# Step-Down Outputs 3
# Step-Up Outputs 3
# LDO Outputs 1
VOUT (V) (min) 0.8
VOUT (V) (max) 3.95
Package/Pins WLP/30
Budgetary
Price (See Notes)
$1.79 @1k
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Simplified Block Diagram

MAX77640, MAX77641: Simplified Application Circuit MAX77640, MAX77641: Simplified Application Circuit Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Additional Resources

SIMO Calculator

Description

The MAX77640/MAX77641 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77640/MAX77641. The EV kit allows for easy evaluation of the MAX77640/MAX77641 resources, including the SIMO, LDO, GPIO, current sinks, and I2C interface.

Windows®-based software provides a user-friendly graphical interface (GUI) as well as a detailed register-based interface to exercise the features of the MAX77640/ MAX77641.

View Details

Features

  • Easy to Use
    • GUI Drives I2C Interface
    • Red/Green/Blue LED
    • Fully Assembled and Tested
  • Emulates System Loading
    • On-Board Electronic Load for LDO and SIMO Buck Boost Outputs
    • Electronic Load has Steady-State, Transient, and Random Modes
  • Evaluates Both Push-Button and Slider-Switch On-Key Options

Description

The MAX77640/MAX77641 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77640/MAX77641. The EV kit allows for easy evaluation of the MAX77640/MAX77641 resources, including the SIMO, LDO, GPIO, current sinks, and I2C interface.

Windows®-based software provides a user-friendly graphical interface (GUI) as well as a detailed register-based interface to exercise the features of the MAX77640/ MAX77641.

View Details

Features

  • Easy to Use
    • GUI Drives I2C Interface
    • Red/Green/Blue LED
    • Fully Assembled and Tested
  • Emulates System Loading
    • On-Board Electronic Load for LDO and SIMO Buck Boost Outputs
    • Electronic Load has Steady-State, Transient, and Random Modes
  • Evaluates Both Push-Button and Slider-Switch On-Key Options

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Multifunction PMICs
VIN (V) (min) 2.7
VIN (V) (max) 5.5
# Step-Down Outputs 3
# Step-Up Outputs 3
# LDO Outputs 1
VOUT (V) (min) 0.8
VOUT (V) (max) 3.95
Package/Pins WLP/30
Budgetary
Price (See Notes)
$1.79 @1k

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, 0.4mm Pitch, 6 x 5 Array
    • 16mm2 Total Solution Size

Applications/Uses

  • Action Cameras, Wearable/Body Cameras
  • Hearables: Bluetooth Headphones and Earbuds
  • Internet of Things (IoT) Devices
  • Wearables: Fitness, Health, and Activity Monitors

Description

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.

Design Solution: Choose a Tailored SIMO PMIC for Your Portable Design ›

Simplified Block Diagram

MAX77640, MAX77641: Simplified Application Circuit MAX77640, MAX77641: Simplified Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal