LTC2952CUF#PBF

Power Supply Controllers, Monitors Overview

The LTC2952CUF#PBF is a supervisory circuit from Analog Devices, packaged in a 20-lead TSSOP. It integrates push-button on/off control, ideal diode power path management, and system monitoring functions. The device operates within a supply voltage range of 2.7V to 28V. It features adjustable debounce timers for button inputs and provides precise voltage monitoring with guaranteed threshold accuracy. The component supports active high, active low, and open drain outputs.

Power Supply Controllers, Monitors Feature Summary

• Integrates push-button on/off control with independent adjustable debounce timers for reliable manual input handling.
• Manages dual DC sources via ideal diode power path using external P-channel MOSFETs for low-loss switching.
• Provides system integrity monitoring including undervoltage detection, voltage supervision, and microprocessor watchdog capabilities.

Power Supply Controllers, Monitors Applications

• Automatic power OR-ing between wall adapters and battery sources
• Push-button controlled DC/DC converter interfaces
• High-reliability systems requiring combined power path and supervisory management

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix CF indicates commercial temperature grade and TSSOP packaging. Confirm availability status as distribution channels may list limited stock or special orders. Ensure the datasheet matches the exact part number for pinout and electrical specifications before integration.

Power Supply Controllers, Monitors Selection Notes

Select this component when a single IC must handle power source selection, manual power control, and system supervision. It is suitable for designs requiring wide input voltage ranges and low standby current consumption. Verify that external P-channel MOSFETs are available for the ideal diode implementation.

Power Supply Controllers, Monitors Part Context

This part belongs to the LTC2952 family, which combines power path and supervisory functions. It is distinct from the LTC2950 and LTC2954 series, which focus primarily on push-button control without integrated power path management. The TSSOP package offers a compact solution for space-constrained applications.

Power Supply Controllers, Monitors Replacement Considerations

Direct substitutes include other variants within the LTC2952 family such as the LTC2952IUF#PBF for industrial temperature range. Cross-family replacements like the LTC2950 require separate power path components. Verify pin compatibility and functional equivalence before substitution.

Power Supply Controllers, Monitors FAQ

How does the LTC2952 manage power source switching?

It regulates two external P-channel MOSFETs to create an ideal diode power path, allowing low-loss switching between two DC sources based on voltage levels.

What monitoring features are included in the device?

The device includes undervoltage monitoring, precise voltage supervision with ±1.5% accuracy, and a microprocessor watchdog timer to ensure system integrity.