LM34926SDX/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM34926SDX/NOPB is a switching voltage regulator designed as an integrated secondary-side bias supply for isolated DC-DC converters. It operates with an input voltage range of 7.5 V to 100 V and delivers up to 300 mA output current. The device features two adjustable outputs and utilizes a fixed 1 MHz switching frequency. It employs constant on-time control, eliminating the need for loop compensation. The component is housed in an 8-WSON package and supports operation within a temperature range of -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrates high-side and low-side switches without requiring external Schottky diodes
• Utilizes constant on-time control architecture to simplify design
• Eliminates the need for external loop compensation components

Voltage Regulators - DC DC Switching Regulators Applications

• Secondary-side bias regulation for isolated DC-DC converters
• Power management in flyback converter topologies
• Bias supply generation for auxiliary windings

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'SDX' confirms the WSON-8 tape-and-reel packaging variant distinct from tube-packaged versions. Confirm RoHS compliance status through official Texas Instruments documentation prior to integration. Ensure the ordering quantity aligns with the manufacturer's standard reel specifications to avoid handling discrepancies.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is required for secondary-side biasing in isolated power supplies. The integrated switch capability reduces external component count compared to discrete solutions. Verify that the 300 mA output current meets the auxiliary winding requirements of the target transformer design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3492x family of integrated secondary-side bias regulators. It shares functional similarities with the LM34925 and LM34927 but differs in output current capacity and physical package dimensions. The SDX suffix specifically denotes the small outline waffle-pack or reel configuration suitable for automated surface-mount assembly processes.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM34926MR/NOPB offers identical electrical performance but uses an SO-PowerPAD-8 package instead of WSON-8. LM34927SDX/NOPB provides higher current capability (600 mA) in the same package. Cross-reference pinouts and thermal characteristics when substituting.