STMicroelectronics Voltage Regulator 38V DFN 6-Pin Surface Mount Positive Polarity Low Quiescent Current 140μA LDO40LPURY

STMicroelectronics LDO40LPURY is a high-performance voltage regulator designed for efficient power management in electronics. This device operates over a wide voltage range up to 38 V and ensures ultra-low quiescent current making it ideal for battery-powered and low-power applications.

The LDO40LPURY supports output currents up to 400 mA with precise voltage regulation options that include fixed and adjustable outputs, maintaining voltage accuracy within ±1% at 25 °C and ±3% over line, load, and temperature variations. Its low dropout voltages of 36 mV at 100 mA and 140 mV at 400 mA loads make it highly efficient.

This voltage regulator features high power supply rejection ratio (PSRR) of 70 dB at 1 kHz and very low noise characteristics (20 μVRMS/VOUT), ensuring clean and stable output power. Protection mechanisms such as current limitation and thermal shutdown provide enhanced device safety and reliability in demanding environments.

Housed in a compact DFN6 package (3 mm x 3 mm) with wettable flanks, the device supports surface mounting on PCBs with automated assembly processes. It is qualified to automotive standard AEC-Q100, allowing use in automotive and industrial sectors with operating temperatures from -40 °C to +125 °C.

This component is well suited for applications in industrial machinery, automotive electronics, power management circuitry, and other electronic systems requiring precision voltage regulation with low power dissipation.

Operates at a minimum input voltage of 3.5 V with a maximum input voltage of 38 V. Typical quiescent current of 45 μA at no load and maximum 140 μA quiescent current. Output current capability up to 400 mA with ultra low-dropout voltage.

Output voltage options include adjustable from 2.5 V and fixed 3.0 V, 3.3 V, 5.0 V, and 8.5 V. High PSRR of 70 dB at 1 kHz ensures stable output voltage. Protection features: current limitation and thermal shutdown. Compact DFN6 (3x3 mm) package with wettable flanks for surface mounting.

Wide operating temperature range -40 °C to +125 °C, automotive grade AEC-Q100 compliant. Discover more voltage regulators and power management ICs on EnvMart for industrial, automotive, and laboratory applications.

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