LP2985A-33DBVT

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LDO Voltage Regulators 150-mA 1% Tolerance Low-Noise LDO

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LP2985A-33DBVT DataSheet

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LP2985A-33DBVT Details

The LP2985A-33DBVT is a low-dropout voltage regulator from Texas Instruments, designed for stable and accurate voltage regulation in various electronic circuits. This regulator offers a fixed output voltage of 3.3V with a low dropout voltage, making it suitable for applications with tight voltage requirements. It comes in a compact SOT-23 package, ideal for space-constrained designs.

Pinout

  • 1 (VIN): Input Voltage
  • 2 (GND): Ground
  • 3 (VOUT): Output Voltage

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • Low Dropout Voltage: Provides stable output voltage even with small input-output differentials.
  • Fixed Output Voltage: Offers a fixed output voltage of 3.3V for consistent performance.
  • Compact Package: Housed in a small SOT-23 package for easy integration into compact designs.
  • High Accuracy: Ensures precise voltage regulation for sensitive electronic components.
  • Low Quiescent Current: Designed for low power consumption in standby or idle modes.

Application

  • Embedded Systems: Ideal for providing stable voltage to microcontrollers and digital ICs.
  • Portable Devices: Used in battery-powered devices requiring efficient voltage regulation.
  • Sensor Networks: Suitable for sensor nodes and IoT devices for reliable power management.

Where to Use

The LP2985A-33DBVT is recommended for applications that demand stable and accurate voltage regulation, especially in embedded systems, portable devices, and sensor networks. It ensures consistent performance and reliable power delivery to sensitive components.

How to Use

Connect the LP2985A-33DBVT to your circuit by connecting the VIN pin to the input voltage source and the VOUT pin to the load. Ensure proper grounding using the GND pin. The regulator will provide a stable 3.3V output voltage for your application. For detailed usage instructions, consult the datasheet.

Application Circuit

The application circuit diagram for the LP2985A-33DBVT illustrates how to integrate the voltage regulator into your electronic system. It includes connections for input voltage, output voltage, and ground, enabling proper voltage regulation and system operation.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

  • LM2937-3.3: A comparable low-dropout voltage regulator with similar voltage output.
  • ADM7150: An alternative voltage regulator offering precise output voltage control.

Complementary

The LP2985A-33DBVT can be paired with the LP2950CZ-3.3 for additional voltage regulation and power management capabilities. This combination ensures stable and reliable power supply for complex electronic systems.

When selecting complementary components, verify compatibility and performance matching for optimal system operation.

Frequently Asked Questions

Q: What is the dropout voltage of the LP2985A-33DBVT?

A: The LP2985A-33DBVT has a low dropout voltage, typically below 200mV at full load. Refer to the datasheet for precise specifications under different operating conditions.

Q: Can the LP2985A-33DBVT be used in battery-powered devices?

A: Yes, the LP2985A-33DBVT is suitable for battery-powered applications, offering efficient voltage regulation for extended battery life and stable operation.

LP2985A-33DBVT

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Output options Fixed Output Iout (max) (A) 0.15
Vin (max) (V) 16 Vin (min) (V) 2.2
Vout (max) (V) 10 Vout (min) (V) 1.8
Fixed output options (V) 1.8, 2.5, 2.8, 2.9, 3, 3.3, 5, 10 Noise (µVrms) 30
Iq (typ) (mA) 0.065 Thermal resistance θJA (°C/W) 206
Rating Catalog Load capacitance (min) (µF) 2.2
Regulated outputs (#) 1 Features Enable
Accuracy (%) 3 PSRR at 100 KHz (dB) 40
Dropout voltage (Vdo) (typ) (mV) 280 Operating temperature range (°C) -40 to 125, -45 to 125

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LP2985A-33DBVT PDF Download

FAQs

What is LP2985A-33DBVT?

The LP2985A-33DBVT is a low dropout voltage regulator manufactured by Texas Instruments. It is a 3.3V fixed output voltage regulator designed to provide a stable power supply for various electronic devices and circuits.

How Does LP2985A-33DBVT Work?

The LP2985A-33DBVT regulates an input voltage to a constant 3.3V output voltage with minimal dropout voltage. It offers a high level of accuracy and stability in voltage regulation, making it suitable for applications requiring a reliable power source.

How Many Pins does LP2985A-33DBVT have and What are the Functions of the Pinout Configuration?

The LP2985A-33DBVT is available in a 5-pin SOT-23 package. The pinout configuration includes:

  • VIN: Input voltage pin.
  • GND: Ground pin.
  • EN: Enable pin for controlling the regulator.
  • BP: Bypass pin for noise reduction.
  • VOUT: Fixed 3.3V output voltage pin.

What are the Pros and Cons of LP2985A-33DBVT?

Pros:

  • Low Dropout Voltage: Provides stable output voltage even with small voltage differentials between input and output.
  • High Accuracy: Offers precise 3.3V output regulation for sensitive electronic components.
  • Small Package: The SOT-23 package is compact and suitable for space-constrained applications.
  • Thermal Shutdown Protection: Includes a thermal shutdown feature to prevent overheating.

Cons:

  • Fixed Output Voltage: The output voltage is fixed at 3.3V and cannot be adjusted.
  • Limitation on Current Output: May not be suitable for high-current applications.
  • External Components: Some applications may require additional capacitors for stability and noise reduction.

Are There Any Equivalents/Alternatives to LP2985A-33DBVT for Recommendation?

  • The MCP1700-3302E from Microchip offers similar features as a low dropout voltage regulator.
  • Alternatives to the LP2985A-33DBVT include the LM2937 from Texas Instruments and the XC6206P332MR-G from Torex Semiconductor.

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