LM66100DCKR

Overview

The LM66100DCKR is a single-input single-output (SISO) ideal diode controller manufactured by Texas Instruments. It integrates a P-channel MOSFET to provide reverse current blocking and input polarity protection within a compact SC-70-6 package. The device operates with an input voltage range of 1.5 V to 5.5 V and supports a maximum continuous current of 1.5 A. It features low quiescent current consumption, typically 150 nA at 3.6 V, and includes a comparator for channel status indication. The component functions effectively in hot-swap applications and OR-ing configurations.

Feature Summary

• Integrates a P-channel MOSFET for efficient power path management
• Provides reverse polarity protection against incorrect wiring or battery reversal
• Enables OR-ing configurations to prevent backflow between parallel power sources
• Includes channel state indication via internal voltage comparison

Applications

• Hot-swap circuitry for system insertion and removal
• OR-ing controllers for redundant power supply architectures
• Input polarity protection for battery-powered devices
• Reverse current blocking in DC-DC converter outputs

Procurement Notes

Verify the specific suffix DCKR corresponds to the SC-70-6 surface-mount package and tape-and-reel delivery format. Confirm that the non-automotive grade meets the required operating temperature range of -40°C to +105°C for the target application environment. Ensure compatibility with the intended gate drive requirements for the integrated FET.

Selection Notes

Select this component when a compact solution for ideal diode rectification is required without external discrete MOSFETs. It is suitable for designs needing low standby current and built-in reverse voltage protection. Consider the automotive-grade LM66100QDCKRQ1 if AEC-Q100 qualification and extended temperature ranges are mandatory for the end product.

Part Context

This part belongs to the LM66100 family of ideal diode controllers from Texas Instruments. The family offers integrated solutions for power management, combining control logic with power switches. The standard LM66100 variant serves general industrial and consumer electronics markets, providing a cost-effective alternative to discrete Schottky diodes or external MOSFET implementations.

Replacement Considerations

The LM66100QDCKRQ1 is the automotive-qualified equivalent within the same family. Verify pinout and functional compatibility before substitution, as packaging remains identical while qualification standards differ.