LM5009AMM/NOPB

Voltage Regulators - DC DC Switching Regulators Overview

The LM5009AMM/NOPB is a non-synchronous buck regulator from Texas Instruments featuring constant on-time (COT) control. It supports a wide input voltage range of 6 V to 95 V and delivers an adjustable output voltage from 2.5 V to 75 V with a maximum output current of 350 mA. The device operates at a switching frequency between 50 kHz and 600 kHz, with a quiescent current of 485 uA. It is housed in an 8-pin VSSOP package and functions within a temperature range of -40 °C to +125 °C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Implements constant on-time control architecture for simplified external component selection and stable operation across wide input voltage ranges.
• Supports high input voltages up to 95 V, enabling direct connection to industrial bus systems without pre-regulation.
• Integrates comprehensive protection mechanisms including thermal shutdown and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Applications

• Industrial point-of-load regulation
• Automotive power distribution systems
• DC-DC conversion for sensor interfaces

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'A' against the official datasheet to confirm performance grades, as standard LM5009 variants may differ. Confirm RoHS compliance status and check for Not Recommended for New Design (NRND) status prior to finalizing procurement plans to ensure long-term supply availability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing circuits requiring high input voltage tolerance up to 95 V with moderate output current needs around 350 mA. Ensure the application benefits from COT topology simplicity over synchronous alternatives, particularly where efficiency at light loads is less critical than component count reduction.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM5009 family of wide-input voltage buck regulators. It shares architectural similarities with the LM5008A but offers higher current capability compared to the 150 mA LM5009. The device is designed for robust performance in electric vehicle and industrial environments requiring reliable DC-DC conversion.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM5008AMM/NOPB: Higher current capacity (350 mA vs 150 mA), similar input range, compatible pinout.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM5009AMM/NOPB a synchronous rectifier?

No, it is a non-synchronous buck regulator utilizing an external N-channel MOSFET for the low-side switch.

What is the minimum operating input voltage?

The minimum operating input voltage is 6 V.