MAX8969

PRODUCTION

Step-Up Converter for Handheld Applications

1A Boost Converter with Four External Components in a Small, 1.25mm x 1.25mm WLP Package

Data Sheet (Rev. 7) Product Selection Table
Part Models
8
1ku List Price
Starting From $0.61
Viewing:

Part Details

  • Flexible System Integration
    • Up to 1A Output Current
    • 2.5V to 5.5V Input Voltage Range
    • 3.3V to 5.7V Output Voltage Options
  • Integrated Protection Increases System Robustness
    • Undervoltage Lockout (UVLO)
    • Short-Circuit Protection
    • Overtemperature Shutdown
  • High Efficiency and Low Quiescent Current Extends Battery Life
    • Over 90% Efficiency with Internal Synchronous Rectifier
    • 60µA IQ in Automatic Track Mode
    • 45µA IQ in Step-Up Mode
    • 30µA IQ in Track Mode
    • 1µA Shutdown Current
    • Skip Mode Under Light Load Condition Improves Efficiency
    • True Shutdown™ Prevents Current Flow from OUT_ to LX_
    • Soft-Start Limits Inrush Current to 480mA
  • Small Package and High Frequency Operation Reduce Board Space
    • 9-Bump 1.25mm × 1.25mm WLP Package
    • 3MHz PWM Switching Frequency
    • Small External Components
MAX8969
Step-Up Converter for Handheld Applications
MAX8969 Simplified Block Diagram MAX8969 Circuit Diagram MAX8969 Pin Configuration
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Learn More
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

MAX8969EVKIT

Evaluation Kit for the MAX8969

Buy Now View Details

Features and Benefits

  • Compact Layout, Small External Components
  • Up to 1A Output Current
  • 2.5V to 5.5V Input Voltage Range
  • Over 90% Efficiency with Internal Synchronous Rectifier
  • 1A Current-Limited Track Mode
  • Automatic Track Mode
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX8969 evaluation kit (EV kit) is a fully assembled and tested PCB for evaluating the MAX8969 IC. The IC is a simple 1A step-up converter in a small package that can be used in any single-cell Li-ion application. This IC provides protection features such as input undervoltage lockout, short circuit, and overtemperature shutdown.

The IC transitions to skip mode seamlessly under lightload conditions to improve efficiency. Under these conditions, switching occurs only as needed, reducing switching frequency and supply current to maintain high efficiency.

For higher efficiency when input voltage is closer to the output voltage, two special modes of operation are available: track and automatic track. These modes allow users to balance quiescent current (IQ) vs. transient response time into boost mode. In both modes, the p-channel MOSFET acts as a current-limited switch such that VOUT follows VIN. However, in track mode, the boost circuits are disabled and the system controls the boost function with the EN, TREN inputs (IQ = 30µA). In automatic track mode (ATM), the boost circuits are enabled and the device automatically transitions into boost mode when VIN falls to 95% of the target VOUT (IQ = 60µA).

Applications

  • Cell Phones
  • eBooks
  • GPS, PND
  • Mobile Internet Devices
  • Smartphones
MAX8969EVKIT
Evaluation Kit for the MAX8969

Latest Discussions

No discussions on max8969 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed