MAX8570EUT

Overview

The MAX8570EUT is a high-efficiency LCD boost converter featuring true shutdown functionality. It operates with an input voltage range of 2.7V to 5.5V and delivers up to 100mA output current. The device integrates a 1.2MHz switching frequency, internal power switch, and soft-start circuitry. It supports adjustable output voltages via external resistors and includes protection features such as overcurrent limiting and thermal shutdown. Packaged in a compact SOT-23-6 format, it is designed for portable applications requiring efficient step-up conversion.

Feature Summary

• Integrates a high-efficiency boost converter with true shutdown mode for minimal quiescent current consumption
• Features a fixed 1.2MHz switching frequency to allow the use of small external components
• Includes built-in soft-start capability to limit inrush current during startup
• Provides comprehensive protection against overcurrent conditions and excessive temperature

Applications

• Portable electronic devices requiring LCD bias voltage generation
• Battery-powered systems needing efficient step-up conversion
• Handheld instruments utilizing liquid crystal displays
• Mobile communication devices with display backlighting requirements

Procurement Notes

Verify the specific suffix (e.g., +T) to confirm tape-and-reel packaging versus tube configuration. Ensure the order matches the exact temperature grade and package variant required for your design. Cross-reference the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications before finalizing procurement decisions.

Selection Notes

Select this component when designing circuits that require a compact solution for boosting low battery voltages to drive LCD panels. Consider the 1.2MHz frequency for minimizing passive component size. Evaluate the efficiency curves at your specific load and input voltage conditions to ensure optimal battery life. Verify that the SOT-23-6 package fits within your board space constraints.

Part Context

This part belongs to Maxim Integrated's family of high-efficiency boost converters designed for portable electronics. It complements other linear regulators and DC/DC converters by providing efficient voltage stepping capabilities. The series focuses on balancing performance, size, and power consumption for mobile applications.

Replacement Considerations

Check for direct replacements like the MAX8570EUT+T for identical specifications. Compare pinouts and electrical parameters with similar boost converters from Analog Devices or other manufacturers if sourcing issues arise. Ensure any substitute maintains the same shutdown current and switching frequency characteristics.