LP2951ACM/NOPB

Name: LP2951ACM/NOPB
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

Series of Micropower Voltage Regulators

7,230 Effective Inventory

LP2951ACM/NOPB

Effective Inventory7,230

Series of Micropower Voltage Regulators

Manufacturer Part # : LP2951ACM/NOPB
Package/Case: SOIC (D)-8
Brand: Texas Instruments
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Series : LP2951

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LP2951ACM/NOPB DataSheet

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LP2951ACM/NOPB Details

The LP2951ACM/NOPB is a low-dropout voltage regulator from Texas Instruments, designed for reliable voltage regulation in various applications. This device features excellent thermal stability, very low start-up current, and fault-tolerant operation, making it suitable for battery-powered devices and industrial control systems.

Pinout

1 (VOUT): Regulated Output Voltage
2 (EN): Enable Input
3 (PGD): Power Good Indicator
4 (PWR): Power Supply Input
5 (GND): Ground
6 (VCC): Voltage Regulator Output

Key Features

Excellent Thermal Stability: The LP2951ACM/NOPB features excellent thermal stability, ensuring reliable operation in a wide range of temperatures.
Very Low Start-Up Current: This device has very low start-up current, making it suitable for battery-powered devices and reducing power consumption during startup.
Fault-Tolerant Operation: The LP2951ACM/NOPB is designed to operate fault-tolerantly, ensuring reliable voltage regulation even in the presence of faults or errors.

Applications

Battery-Powered Devices: The LP2951ACM/NOPB is suitable for battery-powered devices, such as portable electronics and industrial control systems, where low power consumption and reliable voltage regulation are critical.
Industrial Control Systems: This device can be used in industrial control systems, such as process control and automation, where fault-tolerant operation and excellent thermal stability are essential.

Where to Use

The LP2951ACM/NOPB is suitable for applications that require reliable voltage regulation, such as battery-powered devices and industrial control systems. It can be used in a wide range of industries, including aerospace, automotive, and medical.

How to Use

To use the LP2951ACM/NOPB, connect the VCC pin to the power supply input, the EN pin to the enable input, and the PGD pin to the power good indicator. Ensure proper connections for the GND and VOUT pins. For detailed usage instructions, refer to the datasheet.

Application Circuit

The application circuit diagram for the LP2951ACM/NOPB illustrates how to connect the voltage regulator to a power supply and load. It includes connections for the VCC, EN, PGD, GND, and VOUT pins, ensuring proper operation and reliable voltage regulation.

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

Equivalents

LP2950ACM/NOPB: A similar low-dropout voltage regulator from Texas Instruments offering comparable features and performance.
ADP7148: An alternative low-dropout voltage regulator from Analog Devices with equivalent functionality.

Complementary

The LP2951ACM/NOPB can be complemented by the LP2952ACM/NOPB, which offers additional features such as higher output current and enhanced thermal performance, suitable for more demanding applications.

When selecting complementary voltage regulators, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the dropout voltage of the LP2951ACM/NOPB?

A: The LP2951ACM/NOPB has a dropout voltage of 1.5V, making it suitable for applications where low power consumption and reliable voltage regulation are critical.

Q: Can the LP2951ACM/NOPB be used in aerospace applications?

A: Yes, the LP2951ACM/NOPB is suitable for aerospace applications, offering excellent thermal stability and fault-tolerant operation in harsh environments.

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)	2.3
Vout (max) (V)	29	Vout (min) (V)	1.24
Fixed output options (V)	3, 3.3, 5	Noise (µVrms)	160
Iq (typ) (mA)	0.075	Thermal resistance θJA (°C/W)	43, 56, 118, 171
Rating	Catalog	Load capacitance (min) (µF)	1
Regulated outputs (#)	1	Features	Enable, Power good
Accuracy (%)	2.5	PSRR at 100 KHz (dB)	51
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 LP2951ACM/NOPB PDF Download

FAQs

What is LP2951ACM/NOPB?

The LP2951ACM/NOPB is a low-dropout voltage regulator designed by Texas Instruments. It is an integrated circuit that provides a stable output voltage even when the input voltage is close to the output voltage. This regulator is commonly used in applications requiring stable power supplies for sensitive electronic components.

How Does LP2951ACM/NOPB Work?

The LP2951ACM/NOPB works by comparing the output voltage to a reference voltage internally and adjusting the pass transistor to maintain a constant output voltage. It regulates the output voltage by continuously monitoring and adjusting the voltage levels, ensuring a reliable and stable power supply for connected devices.

How Many Pins does LP2951ACM/NOPB have and What are the Functions of the Pinout Configuration?

The LP2951ACM/NOPB is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

VOUT: Regulated output voltage pin.
VIN: Input voltage pin.
ADJ/GND: Adjust pin for output voltage adjustment or ground connection.
SENSE: Sense pin for load regulation.
SHUTDOWN: Shutdown pin for enabling or disabling the regulator.

What are the Pros and Cons of LP2951ACM/NOPB?

Pros:

Low Dropout Voltage: Maintains regulation with very small voltage differentials between input and output.
Stable Output: Provides a stable output voltage even with variations in input voltage or load conditions.
Short Circuit Protection: Offers protection against short circuits, enhancing system reliability.
Low Quiescent Current: Operates with low power consumption, ideal for battery-powered devices.
Compact Size: The 8-lead SOIC package is compact and space-efficient.

Cons:

Heat Dissipation: May require heat sinking in high-power applications to dissipate heat effectively.
Input Voltage Limit: Limited to a maximum input voltage, which may restrict usage in certain applications.
External Capacitors: Requires external capacitors for stability in some configurations.

Are There Any Equivalents/Alternatives to LP2951ACM/NOPB for Recommendation?

The LM2940 from Texas Instruments is a comparable low-dropout voltage regulator.
Alternative options to the LP2951ACM/NOPB include the MCP1700 from Microchip Technology and the LT1761 from Analog Devices.