LM34917ATL/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM34917ATL/NOPB is an ultra-small, non-synchronous buck switching regulator from Texas Instruments. It operates with an input voltage range of 8V to 33V and delivers a maximum output current of 1.25A. The device utilizes a constant on-time control architecture and features an adjustable output voltage range from 2.5V to 45V. It is housed in a compact 12-WFBGA package measuring 2.3mm by 2.0mm. The regulator includes input over-voltage shutdown at approximately 35V and transient capability up to 50V.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Constant on-time control architecture for simplified external component selection
• Ultra-small footprint utilizing a 2.3mm x 2.0mm WFBGA package
• Integrated input over-voltage shutdown protection at approximately 35V
• High transient voltage tolerance capable of withstanding up to 50V

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation in industrial equipment
• Power supply stages for automotive electronics
• Battery-powered portable devices requiring high efficiency
• Embedded systems with strict size constraints

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'TL' corresponds to the 12-WFBGA package variant when sourcing. Confirm RoHS compliance status as indicated by the '/NOPB' designation. Ensure the supplier provides official datasheets matching the Texas Instruments part number to avoid counterfeit components. Check for availability of tape and reel packaging if automated assembly is required.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for applications requiring a small solution size and robust input voltage handling. The constant on-time topology simplifies design compared to fixed-frequency PWM controllers. Consider the 1.25A output limit when sizing the inductor and ensuring thermal management within the WFBGA package. Verify that the input voltage does not exceed the 50V transient rating during normal operation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM3491x family of step-down regulators designed for space-constrained environments. It shares architectural similarities with other constant on-time buck converters but distinguishes itself through its specific input voltage range and ultra-compact packaging. The family targets modern power management needs where board real estate is limited.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct replacements include the LM34910CSDX/NOPB and LM34917A variants. Verify pin compatibility and package dimensions before substitution. The LM34910CSDX/NOPB offers similar functionality in a WSON-10 package. Ensure the substitute supports the required 1.25A output current and input voltage range.