LM25183QNGURQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM25183QNGURQ1 is an automotive-grade flyback switching regulator designed for isolated power conversion applications. It operates with a wide input voltage range from 4.5 V to 42 V and delivers up to 2.5 A output current at 12 V. The device integrates a high-voltage startup circuit and supports fixed switching frequencies of 350 kHz. It features low quiescent current of 3 µA during shutdown, ensuring minimal standby power consumption. The component is housed in a compact WSON-8 package and is qualified for operation across an extended temperature range from -40°C to +150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated high-voltage startup circuit enables reliable operation from wide input voltage ranges without external bias supplies.
• Supports no-opto flyback topology, reducing component count and board space requirements while maintaining regulation.
• Low quiescent current in shutdown mode minimizes standby power loss in battery-powered or always-on systems.
• Automotive qualification ensures reliability and performance under harsh environmental conditions.

Voltage Regulators - DC DC Switching Regulators Applications

• Isolated DC-DC conversion in automotive infotainment systems
• Power supply for automotive lighting control modules
• Battery management system auxiliary power rails
• Industrial automotive sensor interface circuits

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes such as Q1 and R1 to ensure correct automotive grade and tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling procedures are followed due to moisture sensitivity classification. Cross-reference with authorized distributors to validate authenticity and traceability records.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing isolated flyback converters requiring high input voltage tolerance and automotive reliability. Consider the 2.5 A output capability and 350 kHz switching frequency for balanced efficiency and size. Evaluate thermal performance within the WSON-8 package constraints. Verify compatibility with external transformer design parameters for optimal magnetic component selection.

Voltage Regulators - DC DC Switching Regulators Part Context

The LM25183 belongs to Texas Instruments' LM2518x family of automotive flyback controllers. It shares architectural similarities with the LM25184 but offers higher output current capacity. The Q1 suffix denotes AEC-Q100 qualification for automotive applications. The R1 suffix indicates reel packaging format. This series targets cost-sensitive, space-constrained automotive designs requiring galvanic isolation.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM25184QNGURQ1 serves as a lower-current alternative within the same family. Both share identical pinouts and control architecture. Selection depends on required output current: 2.5 A for LM25183 versus 1 A for LM25184. Thermal dissipation characteristics differ accordingly. No functional changes are introduced by substituting between these variants if current demands align.