LM43602QPWPTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM43602QPWPTQ1 is an automotive-qualified synchronous step-down DC-DC converter from Texas Instruments. It operates with an input voltage range of 3.5 V to 36 V and delivers a maximum output current of 2 A. The device features adjustable output voltages between 1 V and 28 V, with a quiescent current of 27 uA. Switching frequency is programmable from 200 kHz to 2.2 MHz. It utilizes peak current mode control and includes integrated soft-start, power good indication, and thermal shutdown. The component is housed in a 16-pin HTSSOP package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments.
• Synchronous buck topology ensures high efficiency across varying load conditions through integrated low-side MOSFETs.
• Programmable switching frequency allows optimization for specific design requirements regarding size and transient response.
• Integrated protection mechanisms include thermal shutdown, undervoltage lockout, and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment systems requiring stable power regulation
• Instrument clusters and dashboard electronics
• Body control modules and gateway applications
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as QPWP and TQ1 to ensure correct automotive qualification and packaging configuration. Confirm that the supplier provides traceability documentation required for automotive supply chains. Check for RoHS compliance status and moisture sensitivity level ratings prior to ordering. Ensure compatibility with your manufacturing process regarding lead finish and reflow profile specifications.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring a 2 A synchronous buck regulator with wide input voltage capability. Consider the programmable frequency feature if minimizing external passive component size is critical. Evaluate the 27 uA quiescent current against system standby power budgets. Verify that the 16-pin HTSSOP package fits within the available PCB real estate constraints.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM4360x SIMPLE SWITCHER family, which offers easy-to-use synchronous step-down converters. The family shares common control architectures but varies in output current capabilities and specific automotive qualifications. The LM43602 variant specifically targets the 2 A current segment within this portfolio.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM43602DSUR is a non-automotive equivalent with similar electrical characteristics but lacks AEC-Q100 certification. LM43602AQPWPTQ1 appears to be a variant with identical pinout and function; verify datasheet revisions for any minor parameter differences before substitution.