MC33151DG

Overview

The MC33151DG is a dual inverting high-speed MOSFET gate driver manufactured by onsemi. It features two independent channels with 1.5 A totem pole outputs, designed to drive large capacitive loads with high slew rates. The device operates within a supply voltage range of 6.5 V to 18 V and supports CMOS and LSTTL logic inputs with hysteresis. Key electrical parameters include rise and fall times of 15 ns with a 1000 pF load, and an undervoltage lockout feature. It is housed in an SOIC-8 surface-mount package.

Feature Summary

• Dual independent channels providing 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 prevents erratic 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 'DG' corresponds to the SOIC-8 surface-mount package configuration. Confirm the operating temperature range matches the industrial specification (0°C to +70°C) rather than the extended commercial range found in other variants like the MC33151P. Ensure compatibility with the required input logic levels and supply voltage constraints before integration.

Selection Notes

Select this component when dual-channel inversion is required for low-side MOSFET driving. It is suitable for applications needing fast switching speeds with moderate current capability. Compare against non-inverting variants like the MC33152 if signal phase alignment differs. Consider thermal dissipation limits and PCB layout requirements for high-frequency operation.

Part Context

This part belongs to the MC34151/MC33151 family of high-speed dual MOSFET drivers. The 'MC33' prefix typically denotes the commercial/industrial temperature grade, while 'MC34' indicates the military/extended grade. The 'DG' suffix specifies the SOIC-8 surface-mount package, distinguishing it from through-hole PDIP options.

Replacement Considerations

The MC34151DG is a pin-compatible alternative with potentially different temperature ratings. The MC33152DG offers identical pinout but provides non-inverting outputs instead of inverting.