MAX1602EEE

Overview

The MAX1602EEE is a single-channel DC power-switching IC designed for CardBus and PCMCIA applications. It integrates low-resistance MOSFET switches to deliver selectable VCC and VPP voltages to a single host socket. The device supports 3.3V and 5V switching with a maximum on-resistance of 0.25Ω for both voltage levels. It operates within a supply voltage range of 3V to 5.5V and draws a maximum standby supply current of 11µA. The component features independent internal charge pumps, eliminating the need for external 5V or 12V supplies for low-RDS(ON) switching. It includes overcurrent protection, thermal shutdown at +150°C, and a fault flag output.

Feature Summary

• Integrates low-resistance MOSFET switches for delivering selectable VCC and VPP voltages to a single CardBus or PC Card host socket.
• Features soft-switching action to minimize inrush surge currents during power transitions.
• Includes independent internal charge pumps that remove the requirement for external 5V or 12V supplies.
• Provides comprehensive protection mechanisms including overcurrent protection, thermal shutdown, and an overcurrent/thermal-fault flag output.

Applications

• PCMCIA/Cardbus Switch
• Data Loggers
• Handy-Terminals
• Docking Stations

Procurement Notes

Verify the specific suffix (e.g., EEE vs. EEE+) to ensure compliance with RoHS directives and lead-free manufacturing requirements. Confirm package type accuracy, as variations exist between QSOP and SSOP formats across different revisions. Check current availability status, as this component may be subject to limited supply or obsolescence notices from Analog Devices. Ensure the selected variant matches the required operating temperature range and pinout compatibility for your specific PCB design.

Selection Notes

Select this component when a single-channel power switch is required for PCMCIA or CardBus sockets with strict size constraints. It is suitable for designs needing 3.3V and 5V selection without external high-voltage generators. Consider its code compatibility with Cirrus CL-PD67XX and Intel 82365SL families if migrating existing designs. Evaluate the 16-pin QSOP package dimensions against board space limitations. Verify that the 1A switch current rating meets the load requirements of the target peripheral devices.

Part Context

The MAX1602EEE belongs to Maxim Integrated's family of DC power-switching ICs tailored for portable computing peripherals. It serves as a direct replacement or upgrade for older discrete switching solutions in PCMCIA and CardBus host controllers. The device simplifies system design by integrating multiple protection features and charge pumps into a super-small package. It is widely recognized for its compliance with industry-standard coding schemes, facilitating integration into various handheld and docking station architectures.

Replacement Considerations

The datasheet explicitly states code compatibility with the Cirrus CL-PD67XX family and Intel 82365SL. These parts may serve as functional substitutes in systems adhering to standard PCMCIA coding. Verify pinout and electrical parameter alignment before substitution. No other direct cross-reference part numbers are provided in the official documentation.