LP2951-33D

Name: LP2951-33D
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

LDO Voltage Regulators Adj Micropwr Vltg Reg

7,446 Effective Inventory

LP2951-33D

Effective Inventory7,446

LDO Voltage Regulators Adj Micropwr Vltg Reg

Manufacturer Part # : LP2951-33D
Package/Case: SOIC-8
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LP2951

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LP2951-33D DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.355	$0.36
10	$0.348	$3.48
30	$0.343	$10.29
100	$0.339	$33.90

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

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LP2951-33D Details

The LP2951-33D is a low dropout voltage regulator from Texas Instruments, designed for stable and efficient voltage regulation in various electronic applications. This regulator provides a fixed output voltage of 3.3V with a low dropout voltage, making it suitable for powering sensitive components. It features thermal shutdown and current limit protection for enhanced reliability.

Pinout

1 (VIN): Input Voltage
2 (GND): Ground
3 (VOUT): Output Voltage
4 (NC): No Connection
5 (NC): No Connection
6 (EN): Enable
7 (NC): No Connection
8 (NC): No Connection

(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 3.3V output for consistent power supply.
Thermal Shutdown: Includes thermal shutdown protection to prevent overheating.
Current Limit Protection: Ensures safe operation under varying load conditions.
Efficient Regulation: Delivers efficient voltage regulation for sensitive electronic components.

Application

Embedded Systems: Ideal for powering microcontrollers and other embedded systems.
Sensor Networks: Used in sensor networks requiring stable power sources.
Communication Devices: Suitable for powering communication devices and radio modules.

Where to Use

The LP2951-33D is ideal for applications that demand stable and efficient voltage regulation, especially in embedded systems, sensor networks, and communication devices. It is recommended for systems where low dropout voltage and reliable protection features are essential.

How to Use

Connect the LP2951-33D to your circuit by connecting VIN to the input voltage source and GND to ground. The VOUT pin provides a stable 3.3V output for your components. Enable the regulator by using the EN pin as needed. Ensure proper heat dissipation for optimal performance. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the LP2951-33D illustrates how to integrate the voltage regulator into your electronic system. It provides connections for input voltage, output voltage, and enable pin, ensuring proper functioning and stability.

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

Equivalents

LM2937-3.3: A similar voltage regulator with comparable features for voltage regulation.
TS2950-33: An alternative regulator offering fixed 3.3V output voltage.

Complementary

The LP2951-33D can be complemented by the LP2951-50D, which provides a fixed 5V output for different voltage requirements. When pairing regulators, ensure compatibility with your system specifications for optimal performance.

Frequently Asked Questions

Q: What is the dropout voltage of the LP2951-33D?

A: The LP2951-33D has a low dropout voltage, ensuring stable operation even with small input-output differentials. Refer to the datasheet for specific dropout voltage values.

Q: Is the LP2951-33D suitable for battery-powered systems?

A: Yes, the LP2951-33D is suitable for battery-powered applications, providing efficient voltage regulation and protection features for reliable operation.

Specifications

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

Output options	Adjustable Output, Fixed Output	Iout (max) (A)	0.1
Vin (max) (V)	30	Vin (min) (V)	2
Vout (max) (V)	29	Vout (min) (V)	1.2
Fixed output options (V)	3, 3.3, 5	Noise (µVrms)	160
Iq (typ) (mA)	0.075	Thermal resistance θJA (°C/W)	52, 97
Rating	Catalog	Load capacitance (min) (µF)	1
Regulated outputs (#)	1	Features	Enable, Power good
Accuracy (%)	3	PSRR at 100 KHz (dB)	57
Dropout voltage (Vdo) (typ) (mV)	380	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 LP2951-33D PDF Download

FAQs

What is LP2951-33D?

The LP2951-33D is a low dropout voltage regulator designed by Texas Instruments. It is a precision, cost-effective solution for providing a fixed output voltage with low dropout voltage and low quiescent current. The device is suitable for a wide range of applications, including battery-powered systems, portable instruments, and voltage reference sources.

How Does LP2951-33D Work?

The LP2951-33D works by regulating an input voltage to a stable output voltage with low dropout. It features a precision reference and error amplifier to maintain the output voltage within specified limits. The regulator also includes thermal shutdown and current limit features for protection against overloading and overheating.

How Many Pins does LP2951-33D have and What are the Functions of the Pinout Configuration?

The LP2951-33D is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

Vout: Regulated output voltage pin.
Vin: Input voltage pin.
En: Enable input pin for turning the regulator on and off.
Adj: Adjustment pin for external voltage trimming.
Common: Common or ground pin.
Feedback: Error amplifier feedback pin for regulating the output voltage.
Thermal shutdown: Thermal shutdown protection pin.
Ct pin: Current limit setting pin.

What are the Pros and Cons of LP2951-33D?

Pros:

Low Dropout Voltage: Maintains regulation even when the input voltage is only slightly higher than the output voltage.
Low Quiescent Current: Minimizes power consumption and extends battery life in portable applications.
Small Package: The 8-pin SOIC package is space-efficient for compact designs.
Thermal Shutdown and Current Limit: Provides protection features for safe operation.

Cons:

Fixed Output Voltage: The LP2951-33D provides a fixed output voltage and does not offer adjustable output options.
External Caps Required: May require external capacitors for stability and output filtering.

Are There Any Equivalents/Alternatives to LP2951-33D for Recommendation?

The LM2937 from Texas Instruments is a similar low dropout voltage regulator with fixed output voltage options.
Alternatives to the LP2951-33D include the MIC29302 from Microchip Technology and the LT1763 from Analog Devices.