MIC4426ZN

Overview

The MIC4426ZN is a dual low-side MOSFET gate driver manufactured by Microchip Technology. It utilizes BiCMOS/DMOS technology for high reliability and efficiency. The device operates with supply voltages between 4.5 V and 18 V. It features CMOS and TTL compatible logic inputs. Peak output current capability is 1.5 A. Maximum turn-on and turn-off delay times are specified at 40 ns. The component is housed in an 8-pin PDIP package designed for through-hole mounting.

Feature Summary

• Dual channel configuration for independent low-side switching control
• BiCMOS/DMOS process ensures robust performance and low power consumption
• Compatible with standard CMOS and TTL logic families

Applications

• DC-DC converter circuits
• LDO power management systems
• General purpose power switch applications

Procurement Notes

Verify the specific suffix 'ZN' corresponds to the PDIP-8 package variant when sourcing. Confirm manufacturer documentation matches the required operating voltage range of 4.5 V to 18 V. Ensure compatibility with existing PCB footprints for through-hole assembly. Cross-reference part numbers to avoid confusion with similar series components lacking dual channels.

Selection Notes

Select this component for applications requiring dual low-side drive with moderate speed requirements. The 1.5 A peak current supports typical small-to-medium MOSFETs. Consider the 40 ns delay limits for switching frequency constraints. Verify logic level compatibility with the controlling microcontroller or FPGA before integration into the design.

Part Context

This part belongs to the MIC4426/4427/4428 series of dual low-side drivers. These devices share common architectural features but may differ in specific electrical characteristics or packaging options. The MIC4426 specifically denotes the dual-channel low-side topology within this family, distinct from single-channel or high-side variants.

Replacement Considerations

Check for direct substitutes within the same Microchip series that offer identical pinouts and electrical specifications. Ensure any replacement maintains the 1.5 A output current and 4.5–18 V supply range. Verify package compatibility if physical footprint changes are not permitted.