LM27222SD/NOPB

Overview

The LM27222SD/NOPB is a half-bridge gate driver IC manufactured by Texas Instruments, designed for driving N-channel MOSFETs in high-speed synchronous and asynchronous applications. It operates within a supply voltage range of 4V to 6.85V and supports peak output currents of 3A (sink) and 4.5A (source). The device features typical rise and fall times of 17ns and 12ns respectively, ensuring fast switching performance. It is housed in an 8-WSON package with dimensions of 4x4 mm and functions reliably across a junction temperature range of -40°C to +125°C.

Feature Summary

• Provides non-inverting half-bridge drive configuration for dual-channel control
• Supports high-side bootstrap operation up to 33V for robust gate driving
• Delivers high peak current capability for efficient N-channel MOSFET switching

Applications

• High-speed synchronous rectification in DC-DC converters
• Asynchronous MOSFET driver circuits requiring fast transition times
• Half-bridge power stage implementations in industrial power supplies

Procurement Notes

Verify the specific ordering suffix matches the required package variant and RoHS compliance status. Confirm that the component state is active, as some related variants may have undergone lifecycle changes or retraction notices. Ensure the supplier source provides valid traceability documentation for automotive or industrial qualification requirements if applicable.

Selection Notes

Select this component when a dedicated half-bridge driver with high peak current is required rather than an integrated controller. Consider the 8-WSON footprint constraints and the need for external bootstrap circuitry due to the high-side voltage limit. Evaluate thermal dissipation capabilities within the small package for high-frequency switching duties.

Part Context

This part belongs to the LM27222 series of gate drivers from Texas Instruments, distinct from their buck regulators like the LM27342. It serves as a complementary interface component in power management systems, bridging control logic signals to power switches. The SD/NOPB designation indicates a specific surface-mount WSON package variant compliant with environmental standards.

Replacement Considerations

LM27222MX