LP2985-33DBVT

Name: LP2985-33DBVT
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

LDO Voltage Regulators with 150-mA capacity and Low-Noise feature

5,456 Effective Inventory

LP2985-33DBVT

Effective Inventory5,456

LDO Voltage Regulators with 150-mA capacity and Low-Noise feature

Manufacturer Part # : LP2985-33DBVT
Package/Case: SOT-23 (DBV)-5
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LP2985

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LP2985-33DBVT DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
5	$0.285	$1.42
50	$0.234	$11.70
250	$0.201	$50.25
500	$0.174	$87.00
2500	$0.161	$402.50
5000	$0.154	$770.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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LP2985-33DBVT Details

The LP2985-33DBVT is a low-dropout voltage regulator from Texas Instruments, designed to provide a stable 3.3V output voltage with low input-to-output voltage differential. This regulator is ideal for powering sensitive electronic components that require a precise and noise-free power supply. It offers high output accuracy and low quiescent current, making it suitable for battery-powered applications.

Pinout

1 (VIN): Input Voltage
2 (GND): Ground
3 (VOUT): Output Voltage
4 (NC): No Connection

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

Key Features

Low Dropout Voltage: Provides a stable output voltage with minimal dropout under varying load conditions.
High Output Accuracy: Ensures precise output voltage regulation for sensitive electronic components.
Low Quiescent Current: Minimizes power consumption in standby or idle modes.
Short-Circuit Protection: Offers protection against output short circuits to prevent damage to the regulator and connected devices.
Thermal Shutdown: Includes thermal shutdown feature for overtemperature protection.

Application

Embedded Systems: Suitable for powering microcontrollers, sensors, and other components in embedded systems.
Wireless Devices: Ideal for providing stable power supply to wireless communication modules and transceivers.
Consumer Electronics: Used in consumer electronic devices such as smartphones, tablets, and portable media players.

Where to Use

The LP2985-33DBVT is recommended for applications that require a stable and low-noise 3.3V power source. It is particularly well-suited for powering sensitive electronic circuits and components in various electronic devices and systems.

How to Use

To use the LP2985-33DBVT, connect the VIN pin to the input voltage source, GND to ground, and VOUT to the load requiring a 3.3V supply. Ensure proper decoupling capacitors are in place for stability. Refer to the datasheet for detailed usage guidelines and application circuit examples.

Application Circuit

The application circuit diagram for the LP2985-33DBVT illustrates how to connect the voltage regulator in a typical application setup. It includes connections for input voltage, output voltage, and necessary capacitors for stable 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 characteristics and performance.
LT1763-3.3: An alternative voltage regulator offering equivalent stability and output accuracy.

Complementary

The LP2985-33DBVT can be complemented by the LP2985-50DBVT, which provides a 5V output for applications requiring a different voltage level. This combination offers versatility in power supply solutions for diverse electronic systems.

When choosing complementary regulators, ensure compatibility and consistent performance with your specific design requirements.

Frequently Asked Questions

Q: Is the LP2985-33DBVT suitable for battery-operated devices?

A: Yes, the LP2985-33DBVT's low quiescent current and stable output make it well-suited for battery-powered applications that require efficient power management.

Q: What is the dropout voltage of the LP2985-33DBVT?

A: The dropout voltage of the LP2985-33DBVT is typically very low, ensuring efficient regulation even with small input-output differentials.

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)	205.4, 206
Rating	Catalog	Load capacitance (min) (µF)	2.2
Regulated outputs (#)	1	Features	Enable
Accuracy (%)	5	PSRR at 100 KHz (dB)	40
Dropout voltage (Vdo) (typ) (mV)	280	Operating temperature range (°C)	-40 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 LP2985-33DBVT PDF Download

FAQs

What is LP2985-33DBVT?

The LP2985-33DBVT is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. It is capable of supplying up to 150 mA of output current with a dropout voltage of only 60 mV at full load, making it suitable for battery-powered applications requiring stable voltage regulation.

How Does LP2985-33DBVT Work?

The LP2985-33DBVT operates by regulating an input voltage (typically higher than the desired output voltage) down to a stable 3.3V output. It maintains regulation by comparing a feedback voltage to a reference voltage, adjusting the pass transistor to keep the output voltage constant even when the input voltage or load conditions change.

How Many Pins does LP2985-33DBVT have and What are the Functions of the Pinout Configuration?

The LP2985-33DBVT is housed in a 5-pin SOT-23 (Small Outline Transistor) package. The pinout configuration includes:

VIN: Input voltage pin.
VOUT: Regulated output voltage pin (3.3V).
GND: Ground pin.
EN: Enable pin (used to enable or disable the regulator).
BP: Bypass pin (used for adding an external capacitor to improve transient response).

What are the Pros and Cons of LP2985-33DBVT?

Pros:

Low Dropout Voltage: Maintains regulation with very low dropout voltage, ensuring stable operation even with low input voltages.
Low Quiescent Current: Operates with low quiescent current, suitable for battery-powered devices to conserve power.
Small Package: Compact SOT-23 package saves board space and is suitable for applications with limited space.
Thermal Shutdown Protection: Includes thermal shutdown feature to protect the device from overheating.

Cons:

Current Limitation: Output current limited to 150 mA, may not be sufficient for high-current applications.
External Capacitor Required: Requires an external capacitor on the BP pin for optimal performance, adding to component count.
Fixed Output Voltage: Output voltage is fixed at 3.3V, limiting flexibility compared to adjustable regulators.

Are There Any Equivalents/Alternatives to LP2985-33DBVT for Recommendation?

Alternatives to the LP2985-33DBVT include the MIC5365-3.3YC5-TR from Microchip Technology and the XC6206P332MR-G from Torex Semiconductor.
Similar regulators with adjustable output voltages include the LM1117 from Texas Instruments and the MCP1700 from Microchip Technology.