LP2985A-28DBVRE4

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LP2985A-28DBVRE4 is a fixed-output low-dropout regulator from Texas Instruments, delivering a nominal 2.8 V output with a continuous load current of 150 mA. It features an input voltage range up to 16 V and an A-grade output tolerance of ±1%. The device includes a shutdown pin for power management, achieving a typical shutdown current of 0.01 µA. It operates within a junction temperature range of -40°C to 125°C and utilizes a 5-pin SOT-23 (DBV) package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides high-precision fixed output voltage with ±1% tolerance across the operating temperature range.
• Features ultra-low dropout performance, typically 280 mV at full load, enabling efficient operation near input voltages.
• Includes active-low shutdown functionality that reduces quiescent current to approximately 0.01 µA when disabled.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable electronic devices
• Digital cameras and camcorders
• CD players
• MP3 players

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the component matches the specific LP2985A-28DBVRE4 designation, ensuring the 'A' grade accuracy and 'E4' lead-free suffix are present. Confirm the DBV package type and check datasheet revisions for any updates to electrical characteristics or application guidelines prior to integration.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator for applications requiring precise voltage regulation and low noise in space-constrained designs. Ensure the input voltage remains within the 16 V maximum limit and verify that the output capacitor meets the minimum capacitance and ESR requirements for stability over the entire temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This component belongs to the LP2985 family of low-noise LDO regulators manufactured by Texas Instruments. The family offers various fixed output voltages and grades, with the LP2985A variant providing tighter output tolerance specifications compared to standard versions, suitable for sensitive analog and digital loads.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

LP2985A-28DBVT

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the purpose of the BYPASS pin?

The BYPASS pin allows for improved low-noise performance. Connecting a 10-nF capacitor to this pin reduces the output noise to a typical value of 30 µVRMS.

How does the ON/OFF pin function?

The ON/OFF pin controls the shutdown mode. Driving it low (≤ 0.3 V) turns the device off, while tying it to VIN keeps it on. Leaving it unconnected is not recommended.