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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

Key Features

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) 5.25
Package/Pins WLP/30
Budgetary
Price (See Notes)
0
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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) 5.25
Package/Pins WLP/30
Budgetary
Price (See Notes)
0

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

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 .