MC34151D

Overview

The MC34151D is a dual inverting high-speed MOSFET driver from onsemi, packaged in an 8-pin SOIC. It features two independent channels with 1.5 A totem pole outputs, designed to drive large capacitive loads with high slew rates. The device supports a supply voltage range of 6.5 V to 18 V and operates within a temperature range of 0°C to +70°C. Key electrical parameters include rise and fall times of 15 ns with a 1000 pF load. It offers CMOS and LSTTL logic compatibility with input hysteresis and includes undervoltage lockout with hysteresis to prevent erratic operation at low supply voltages.

Feature Summary

• Dual independent channels with high current totem pole outputs for driving power MOSFETs
• CMOS and LSTTL logic compatible inputs with hysteresis for fast output switching
• Undervoltage lockout with hysteresis to ensure stable system operation at low supply voltages

Applications

• Switching power supplies
• DC to DC converters
• Capacitor charge pump voltage doublers/inverters
• Motor controllers

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-8 surface mount package configuration as documented. Confirm that the operating temperature range meets the application requirements of 0°C to +70°C. Ensure the supply voltage stays within the specified 6.5 V to 18 V limits to activate the undervoltage lockout protection correctly. Cross-reference the manufacturer part number with official onsemi documentation to avoid counterfeit components.

Selection Notes

Select this component when low input current and logic compatibility are required for driving large capacitive loads. The dual channel design allows for efficient control of half-bridge or full-bridge configurations. Consider the 15 ns switching speed for high-frequency applications. The inclusion of hysteresis on both inputs and the undervoltage lockout provides robust noise immunity and protection against unstable startup conditions compared to non-hysteretic drivers.

Part Context

The MC34151 series consists of dual inverting high-speed drivers intended for applications requiring digital circuitry to drive power MOSFETs. The 'MC34151D' variant specifically denotes the plastic small outline package (SOIC) version. This family is pin-out equivalent to older DS0026 and MMH0026 devices, facilitating direct replacement in existing designs while offering enhanced performance characteristics such as lower standby current and improved switching speeds.

Replacement Considerations

The datasheet indicates pin-out equivalence to DS0026 and MMH0026. Verify mechanical dimensions and thermal characteristics before substituting these legacy parts. No other specific substitute part numbers are publicly confirmed in the provided documentation.