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
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file View Data Sheet (Rev.6)
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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
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file View Data Sheet (Rev.6)
Documentation View All Documentation
Part Models 10
1ku List Price Starting From $1.97
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MAX77734

Documentation

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Data Sheet

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UPDATED 05/26/2023
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MAX77734: Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO Data Sheet (Rev.6)

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1.24 M
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User Guide

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UPDATED 09/18/2017
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UG-6464: MAX77734 I2C-Compatible Serial Interface Implementation Guide redirect icon

207.00K

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Reliability Data

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UPDATED 01/12/2023
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MAX77734 Reliability Data redirect icon

44.25K

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Design Note

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UPDATED 10/06/2023
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Design Note 57: Can You Hear Me Now? Extend the Life of Your Hearable Device redirect icon

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Technical Articles

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UPDATED 10/24/2023
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How to Design a Safe Wearable Device with 4× Faster Battery Charging redirect icon

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UPDATED 10/24/2023
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如何设计电池充电速度快4倍的安全可穿戴设备 redirect icon

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UPDATED 10/24/2023
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1/4の時間でバッテリを充電できる安全なウェアラブル・デバイスの設計方法 redirect icon

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Documentation

Technical Documents 5
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Data Sheet 1

MAX77734: Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150mA LDO Data Sheet (Rev.6)

Reliability Data 1

MAX77734 Reliability Data

User Guide 1

UG-6464: MAX77734 I2C-Compatible Serial Interface Implementation Guide

Design Note 1

Design Note 57: Can You Hear Me Now? Extend the Life of Your Hearable Device

Technical Articles 1

How to Design a Safe Wearable Device with 4× Faster Battery Charging

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
MAX77734BENP+ Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX77734BENP+T Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77734CENP+ Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77734CENP+T Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX77734GENP+ Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX77734GENP+T Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX77734MENP+ Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
MAX77734MENP+T Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77734QENP+ Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
MAX77734QENP+T Wafer-Level Package 5x4 Bump, Full Array external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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Nov 16, 2020

- 2103

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MAX77734BENP+

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Jun 3, 2019

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MAX77734BENP+

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MAX77734BENP+T

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MAX77734CENP+

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Jun 3, 2019

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WAFER FAB

MAX77734BENP+

PRODUCTION

MAX77734BENP+T

PRODUCTION

MAX77734CENP+

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MAX77734CENP+T

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MAX77734GENP+T

PRODUCTION

MAX77734QENP+T

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Evaluation Kits 1

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MAX77734EVKIT

Evaluation Kit for the MAX77734

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MAX77734EVKIT

Evaluation Kit for the MAX77734

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MAX77734EVKIT
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
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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.

Resources

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PDF

UG-6464: MAX77734 I2C-Compatible Serial Interface Implementation Guide Download

207.00K

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MAX77734EVKIT BOM Download

55.90K

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ZIP

MAX77734EVKIT Board Layout - Design Files Download

6.90M

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MAX77734EVKIT Schematic Download

226.53K

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ZIP

MAX77734EVKIT Solder Down Gerber Files Download

5.05 M

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MAX77734EVKIT ODB File - Design Files Download

4.97 M

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Evaluation Kits1

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MAX77734EVKIT

Evaluation Kit for the MAX77734

Reference Designs 1

MAXREFDES1302

MAXREFDES1302

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

Reference Designs1

MAXREFDES1302

MAXREFDES1302

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

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