Texas Instruments LP2985-50DBVR LDO Voltage Regulator, 5V, 150mA, SOT-23-5

The Texas Instruments LP2985-50DBVR is a high-performance, fixed 5V output Low-Dropout (LDO) linear voltage regulator designed for precision power management. Engineered with a low-noise architecture, it delivers a stable 5V output with a tight tolerance of ±1.5%, making it ideal for sensitive analogue and digital circuits. It is capable of supplying a continuous load current of up to 150mA, ensuring reliable power for a wide range of low-power applications.

Utilising a vertical PNP pass transistor, this regulator achieves an exceptionally low dropout voltage—typically just 280mV at the full 150mA load—which maximises efficiency and extends battery life in portable devices. The advanced design also results in significantly lower quiescent current compared to traditional lateral PNP regulators, drawing only 850μA at full load and a mere 0.01μA in shutdown mode for minimal power drain.

Key Features & Benefits

• Ultra-Low Noise: Generates a very clean output with just 30μVrms of noise when used with a 10nF bypass capacitor, perfect for audio and RF circuits.
• Excellent Stability: Remains stable with low-ESR capacitors, including cost-effective ceramic types, simplifying design and reducing bill-of-materials cost.
• Robust Protection: Integrated overcurrent and overtemperature protection safeguards both the regulator and the downstream circuitry from fault conditions.
• High Peak-Current Capability: Can handle transient current demands beyond its continuous rating.
• Superior ESD Protection: Exceeds industry standards (JESD 22), with protection up to 2000V Human Body Model and 200V Machine Model, enhancing reliability in handling and operation.

With an operating input voltage range from 2.2V to 16V and a wide temperature range from -40°C to 125°C, this compact SOT-23-5 package regulator is a versatile and reliable choice for demanding environments.