MAX1901ETJ-T

Overview

The MAX1901ETJ-T is a dual-output, buck-topology, fixed-frequency PWM power-supply controller designed for battery-powered notebook and subnotebook systems. It supports four independent outputs configurable via external resistor networks. The device features an efficiency greater than 80% over a 1000:1 load-current range to extend battery life in system suspend or standby modes. It provides excellent dynamic response and is housed in a 32-TQFN-EP (5x5) package.

Feature Summary

• Dual-output buck topology with fixed-frequency PWM control
• Configurable via external resistor networks for four independent outputs
• High efficiency exceeding 80% across a 1000:1 load-current range
• Optimized for battery-powered portable computing applications

Applications

• Battery-powered notebook computers
• Subnotebook systems
• Portable computing voltage regulation

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure compatibility with 32-TQFN-EP (5x5) footprints during PCB layout. Check current availability status as supply conditions may vary.

Selection Notes

Select this component for designs requiring dual-output buck conversion with high efficiency over wide load ranges. It is suitable for portable devices where battery life extension in standby modes is critical. Consider the external resistor network configuration requirements for output voltage setting.

Part Context

This part belongs to the Maxim Integrated portfolio of power management ICs. It serves as a voltage regulator IC for notebook power systems. The device integrates PWM control logic optimized for portable electronics, distinguishing it from general-purpose controllers by its focus on standby efficiency and dynamic response.

Replacement Considerations

The MAX1902 offers three fixed-output options as an alternative. Verify pinout and functionality compatibility before substitution.