Texas Instruments

LP2985A-33DBVT

LP2985A-33DBVT Description

The LP2985A-33DBVT from Texas Instruments is a high-performance, low-dropout (LDO) linear voltage regulator designed for precision power management in space-constrained applications. This fixed-output (3.3V) regulator delivers up to 150mA of output current with an ultra-low dropout voltage of 0.58V (max) @ 150mA, making it ideal for battery-powered and noise-sensitive systems. Its 16V maximum input voltage and 95 µA quiescent current ensure efficient operation across a wide range of conditions. Packaged in a SOT-23-5 form factor, the device is optimized for surface-mount designs requiring minimal board space.

LP2985A-33DBVT Features

• Low Dropout Voltage: 0.58V (max) at full load ensures stable operation even with low input voltages.
• Ultra-Low Quiescent Current: Just 95 µA minimizes power loss in standby modes.
• High PSRR: 45dB @ 1kHz provides excellent noise rejection for sensitive analog/digital circuits.
• Robust Protection: Integrated over-current, over-temperature, and short-circuit protection enhances reliability.
• Enable Control: Active-high enable pin allows for power sequencing or shutdown to reduce leakage.
• Wide Input Range: Supports up to 16V, accommodating various power sources.
• Compact & RoHS-Compliant: SOT-23-5 package with MSL1 (Unlimited) shelf life and ROHS3 compliance.

LP2985A-33DBVT Applications

• Portable Electronics: Ideal for smartphones, wearables, and IoT devices due to low Iq and small footprint.
• Battery-Powered Systems: Efficiently regulates voltage in devices powered by Li-ion or alkaline batteries.
• Noise-Sensitive Analog Circuits: High PSRR makes it suitable for audio amplifiers, sensors, and RF modules.
• Industrial & Automotive: Reliable performance in harsh environments with built-in protection features.
• Embedded Systems: Powers microcontrollers, FPGAs, and peripherals in space-constrained designs.

Conclusion of LP2985A-33DBVT

The LP2985A-33DBVT stands out as a versatile, high-efficiency LDO regulator, combining low dropout, ultra-low quiescent current, and robust protection in a compact package. Its high PSRR and enable control make it a superior choice for noise-sensitive and power-optimized applications. Whether for portable gadgets, industrial systems, or automotive electronics, this regulator delivers reliable, precision voltage regulation with minimal design overhead. Texas Instruments' reputation for quality further ensures its suitability for mission-critical designs.