LM66100QDCKRQ1

Overview

The LM66100QDCKRQ1 is an automotive-grade single-input single-output (SISO) ideal diode controller manufactured by Texas Instruments. It integrates a P-channel MOSFET to provide reverse polarity protection and prevent back-feeding in power systems. The device operates within an input voltage range of 1.5 V to 5.5 V and supports a maximum continuous current of 1.5 A. It features a low quiescent current of 0.5 uA and a shutdown current of 120 nA typical. The component is housed in a SC70-6 package and functions reliably across a junction temperature range of -40°C to +125°C, meeting AEC-Q100 standards for automotive applications.

Feature Summary

• Integrates a P-channel MOSFET for efficient power path management with low on-resistance.
• Provides reverse polarity protection to safeguard against incorrect battery connections.
• Supports OR-ing configurations to combine multiple power sources while blocking reverse current.
• Features a chip-enable (CE) pin for precise control over the internal MOSFET state.

Applications

• Automotive battery reverse polarity protection circuits
• Dual-source power supply OR-ing configurations
• Input protection for electronic control units (ECUs)
• Power distribution modules in vehicle electrical systems

Procurement Notes

Verify that the part number suffix 'Q1' confirms AEC-Q100 automotive qualification status. Ensure the SC70-6 package matches the target PCB footprint. Confirm the operating temperature range meets specific environmental requirements. Cross-reference the datasheet for absolute maximum ratings to prevent overstress during installation.

Selection Notes

Select this component when low static current consumption is critical for battery-powered automotive systems. The integrated MOSFET eliminates the need for external Schottky diodes, reducing voltage drop and heat generation. Consider the 1.5 A current limit for load requirements. The wide input voltage range accommodates various automotive bus voltages.

Part Context

This device belongs to the LM66100 family of ideal diode controllers. The Q1 suffix denotes automotive grade compliance, distinguishing it from the standard commercial LM66100 variant. It serves as a specialized PMIC solution for power integrity and protection in harsh automotive environments.

Replacement Considerations

The LM66100DCKR is the commercial grade equivalent without automotive qualification. Verify if AEC-Q100 certification is strictly required for the application before substituting.