MIC4469CN

Overview

The MIC4469CN is a discontinued low-side MOSFET gate driver IC from Microchip Technology, housed in a 14-DIP package. It features four independent drivers with peak output currents of 1.2A for both sourcing and sinking. The device operates on a supply voltage range of 4.5V to 18V and supports logic input thresholds of 0.8V (VIL) and 2.4V (VIH). Typical rise and fall times are 14ns and 13ns respectively. It is designed for N-channel and P-channel MOSFETs, offering inverting and non-inverting inputs.

Feature Summary

• Four independent low-side drivers integrated into a single package to reduce system cost and improve reliability.
• High peak output current capability of 1.2A for efficient driving of highly capacitive loads such as power MOSFETs.
• Dual input logic gates per driver provide flexibility, allowing replacement of multiple single-input driver packages.
• Built using BCD process technology ensuring latch-up protection and immunity to ground line noise spikes.

Applications

• Driving power MOSFETs and similar highly capacitive loads in power conversion circuits.
• Driving heavily loaded clock lines requiring high efficiency and fast switching times.
• Driving coaxial cables and piezoelectric transducers where high peak currents are necessary.

Procurement Notes

Verify component status carefully as the MIC4469CN is officially discontinued and no longer manufactured. Confirm availability through authorized distributors or secondary markets if sourcing is required. Ensure that any substitute components meet the original electrical specifications and pinout compatibility. Check RoHS compliance requirements against the specific manufacturing date code of available stock, as older batches may not meet current environmental standards.

Selection Notes

Select this component only if legacy design compatibility with the 14-DIP package is mandatory. Consider the MIC4469ZN as a direct active replacement within the same family. Evaluate whether the TC4469 series offers improved performance metrics or modern packaging options suitable for new designs. Verify that the 1.2A peak current and 18V maximum supply voltage align with the target load requirements.

Part Context

The MIC4469CN belongs to the MIC4467/8/9 family of quad output CMOS buffer/drivers. This family expands upon earlier single and dual-output drivers by utilizing higher pin count packages to include dual input logic gates. The series is designed to replace multiple discrete driver packages, thereby reducing total system cost and improving overall system reliability through integration.

Replacement Considerations

The MIC4469ZN is listed as a direct replacement for the MIC4469CN. Both parts share identical electrical characteristics and functionality but differ in packaging or manufacturing status. Verify that the Z suffix variant meets all mechanical and environmental requirements of the original design.