MAX77734
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MAX77734

Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO

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Highly-Integrated Power Solution with Safe Charging and Low-Noise LDO for Hearables and IoT

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 10
1ku List Price Starting From $1.97
Features
  • Extends Battery Life
    • 200nA Factory-Ship Mode for Long Shelf Life
    • 500nA Shutdown Current
    • 4.5µA Quiescent Current with LDO Enabled
    • Charger Allows Battery to Relax after Charging
  • Linear Charger Optimized for Small Battery Size
    • 7.5mA to 300mA Fast-Charge Current
    • Battery Regulation Voltage from 3.6V to 4.6V
    • Accurate Termination Current as low as 0.375mA
    • Instant-On Functionality provided by Maxim's Smart Power Selector™
    • JEITA Battery Temperature Monitors for Safe Charging
  • Highly Integrated
    • 150mA LDO with Power-OK Output
    • Dual-Channel Current Sink for LEDs
    • Analog Multiplexer for Power Monitoring
    • Watchdog Timer
    • On-Key Input for LDO Enable and Manual Reset
  • Small Size
    • 2.23mm x 1.97mm (0.5mm max height) WLP
    • 20-Bump, 0.4mm Pitch, 4 x 5 Array
Additional Details
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The MAX77734 is a tiny PMIC for applications where size and simplicity are critical. The IC integrates a linear-mode Li+ battery charger, low-dropout linear regulator (LDO), analog multiplexer, and dual-channel current sink driver.

The charger is designed for small-battery systems that require accurate termination as low as 0.375mA. The circuit can instantly regulate the system voltage when an input source is connected even if the battery is depleted.

The 150mA LDO's output is programmable between 0.8V and 3.975V with I²C. The analog MUX enables an external ADC to perform conversions on battery V&I signals for power monitoring. The current sinks are capable of sinking 12.8mA each and can be programmed for LEDs to blink in custom patterns.

The MAX77734 is available in a 20-bump, 0.4mm pitch wafer-level package (WLP).

Design Solution: Can You Hear Me Now? Extend the Life of Your Hearable Device ›

Applications

  • Action Cameras, Wearable/Body Cameras
  • Fitness Bands and other Bluetooth Wearables
  • Hearables: Headsets, Headphones, Earbuds
  • Low-Power Internet of Things (IoT) Gadgets
Part Models 10
1ku List Price Starting From $1.97

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX77734BENP+
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MAX77734BENP+T
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MAX77734CENP+
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MAX77734CENP+T
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MAX77734GENP+
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MAX77734GENP+T
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MAX77734MENP+
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MAX77734MENP+T
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MAX77734QENP+
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MAX77734QENP+T
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Product Lifecycle

PCN

Nov 16, 2020

- 2103

TEST

MAX77734BENP+

PRODUCTION

MAX77734BENP+T

PRODUCTION

Jun 3, 2019

- 1925

WAFER FAB

MAX77734BENP+

PRODUCTION

MAX77734BENP+T

PRODUCTION

MAX77734CENP+

PRODUCTION

MAX77734CENP+T

PRODUCTION

MAX77734GENP+T

PRODUCTION

MAX77734QENP+T

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Nov 16, 2020

- 2103

arrow down

TEST

MAX77734BENP+

PRODUCTION

MAX77734BENP+T

PRODUCTION

Jun 3, 2019

- 1925

arrow down

WAFER FAB

MAX77734BENP+

PRODUCTION

MAX77734BENP+T

PRODUCTION

MAX77734CENP+

PRODUCTION

MAX77734CENP+T

PRODUCTION

MAX77734GENP+T

PRODUCTION

MAX77734QENP+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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MAX77734EVKIT

Evaluation Kit for the MAX77734

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MAX77734EVKIT

Evaluation Kit for the MAX77734

Evaluation Kit for the MAX77734

Features and Benefits

  • Easy to Use
    • GUI Drives I2C Interface
    • On-Board Thermistor
    • Red/Green LED
    • Assembled and Fully Tested
  • Emulates System Loading
    • On-Board Electronic Load for LDO
    • Electronic Load has Steady-State, Transient, and Random Modes
  • Demonstrates End-to-End Analog Multiplexer Implementation
    • On-Board ADC
  • Evaluates Both Push-Button and Slider-Switch On-Key Options

Product Detail

The MAX77734 evaluation kit (EV kit) is a fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77734. The EV kit allows for easy evaluation of the various MAX77734 features, including the linear charger, linear regulator, analog multiplexer, current sinks, and I2C interface.

Windows®-based software provides a user-friendly graphical interface as well as a detailed register-based interface to exercise the features of the MAX77734.

Reference Designs

Reference Designs 1

MAXREFDES1302

Analog Devices 1-Wire True Wireless Stereo (TWS) Cradle and Earbuds

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