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LP2953IM

In Stock 24601 pcs Reference Price(In US Dollars)
1+
$1.5261
Manufacturer Part Number:
LP2953IM
Manufacturer / Brand
Texas Instruments
Part of Description:
IC REG LIN POS ADJ 250MA 16SOIC
Datasheets:
LP2953IM(1).pdfLP2953IM(2).pdf
Lead Free Status / RoHS Status:
RoHS non-compliant
Stock Condition:
New original, 24601 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number LP2953IM
Manufacturer / Brand Texas Instruments
Stock Quantity 24601 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Description IC REG LIN POS ADJ 250MA 16SOIC
Lead Free Status / RoHS Status: RoHS non-compliant
RFQ LP2953IM Datasheets LP2953IM Details PDF
LP2953IM Details PDF for FR.pdf
LP2953IM Details PDF for KR.pdf
LP2953IM Details PDF for ES.pdf
LP2953IM Details PDF for DE.pdf
LP2953IM Details PDF for IT.pdf
Voltage Dropout (Max) 0.8V @ 250mA
Voltage - Output (Min/Fixed) 1.23V (5V)
Voltage - Output (Max) 29V
Voltage - Input (Max) 30V
Supplier Device Package 16-SOIC
Series -
Protection Features Over Current, Over Temperature, Reverse Polarity
Package / Case 16-SOIC (0.154", 3.90mm Width)
Package Tube
PSRR -
Output Type Adjustable (Fixed)
Output Configuration Positive
Operating Temperature -40°C ~ 125°C
Number of Regulators 1
Mounting Type Surface Mount
Current - Supply (Max) 33 mA
Current - Quiescent (Iq) 170 µA
Current - Output 250mA
Control Features Enable
Base Product Number LP2953

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges: (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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LP2953IM Product Details:

The LP2953IM is a linear voltage regulator integrated circuit (IC) manufactured by Luminary Micro / Texas Instruments. It belongs to the PMIC (Power Management Integrated Circuit) category, specifically in the subcategory of voltage regulators - linear.

The device is designed to provide a stable and regulated positive output voltage, with an adjustable range from 1.23V to 29V or a fixed 5V output. It is capable of delivering up to 250mA of output current and features protection mechanisms such as overcurrent, overtemperature, and reverse polarity protection.

One of the key design challenges addressed by the LP2953IM is maintaining a regulated output voltage even with fluctuations in the input voltage, making it suitable for applications that require a consistent power supply. Its wide operating temperature range of -40°C to 125°C also makes it suitable for use in harsh environments.

The device is packaged in a 16-SOIC (Small Outline Integrated Circuit) package, which allows for surface mount integration on printed circuit boards. The packaging type is a tube, ensuring easy handling and transportation.

The primary advantages of the LP2953IM include its adjustable output voltage, high efficiency, and comprehensive protection features. These features make it a versatile solution for a variety of applications, such as power supplies, battery chargers, and other electronic systems that require a stable and regulated power source.

The LP2953IM is compatible with various systems and can be used in a wide range of application areas, including industrial, automotive, and consumer electronics.

Regarding equivalent or alternative models, there are several comparable linear voltage regulator ICs from Texas Instruments and other manufacturers, such as the LP2952, LM2940, and LM317. These models may offer similar features and performance characteristics, and the choice between them would depend on the specific requirements of the application.

LP2953IM Key Technical Attributes

Linear Voltage Regulator IC, Output Type Adjustable (Fixed), Number of Regulators 1, Output Configuration Positive

LP2953IM Packing Size

16-SOIC, SOP16 encapsulation, Packaged in Tube, Supplier Device Package 16-SOIC, Package / Case 16-SOIC (0.154", 3.90mm Width)

LP2953IM Application

Suitable for a variety of electronic applications, reflects state-of-the-art integration in PMIC - Voltage Regulators - Linear

LP2953IM Features

The LP2953IM designed by Luminary Micro / Texas Instruments offers robust voltage regulation either in fixed or an adjustable output configuration, ranging from 1.23 V to 29 V with the capability to provide up to 250mA. It supports an input voltage up to 30V and features a low dropout voltage of 0.8V at 250mA load. Current - Quiescent (Iq) is 170A, ensuring low operational power consumption. The regulator provides Over Current, Over Temperature, and Reverse Polarity protection to enhance reliability and safety in operation.

LP2953IM Quality and Safety Features

Possesses Moisture Sensitivity Level 1 (Unlimited), ensuring stable performance under environmental changes. Includes comprehensive protection features such as Over Current, Over Temperature, and Reverse Polarity.

LP2953IM Compatibility

Engineered for surface mount technology, designed to fit a 16-SOIC footprint with a SOP16 encapsulation for board-level integration.

LP2953IM Datasheet PDF

Access the most reliable and informative datasheet for LP2953IM on our website. We recommend downloading it directly from our current page to ensure you have the precise technical specifications and product details.

Quality Distributor

IC-Components stands as a leading distributor for Luminary Micro / Texas Instruments products. With our unwavering commitment to quality and customer satisfaction, we encourage you to obtain a live quote and place your orders through our website to ensure best-in-class service and product authenticity.

Frequently Asked Questions

When considering the LP2953IM for a new design, what are the critical input voltage limitations to be aware of, especially concerning transients and potential damage?
The LP2953IM has an absolute maximum input voltage of 30V. Exceeding this can lead to permanent damage to the device. In applications with potential input voltage spikes or inductive loads, careful design of input filtering and transient suppression is crucial to keep the instantaneous input voltage below this limit and ensure the longevity of the LP2953IM.
The LP2953IM offers an adjustable output voltage. What are the practical considerations for selecting the external resistors to set the output voltage precisely, and what is the typical accuracy achievable in an industrial environment?
To achieve the desired output voltage for the LP2953IM, the ratio of the feedback resistors (R1 and R2) is critical. The formula Vout = Vref * (1 + R1/R2) applies, where Vref is typically 1.23V. For best accuracy, use low-temperature coefficient resistors. Precision resistors (e.g., 1% or better) are recommended to minimize drift with temperature. In a well-designed circuit using quality resistors, accuracies within +/- 2% of the setpoint are generally achievable across the specified operating temperature range of the LP2953IM.
Can the LP2953IM be used as a direct replacement for a microchip PIC16F877A in terms of voltage regulation, and what are the key differences and potential design implications?
The LP2953IM is a linear voltage regulator, while a PIC16F877A is a microcontroller. They serve entirely different functions and are not interchangeable. The LP2953IM can be used to provide a stable power supply *to* a microcontroller like the PIC16F877A, but it does not perform any of the microcontroller's functions. If you are looking for a replacement for a specific voltage regulator IC, please provide its part number.
What are the trade-offs when using the LP2953IM's fixed 5V output versus configuring it for an adjustable output in a battery-powered application requiring a stable 3.3V?
For a fixed 5V output, the LP2953IM is simpler to implement, requiring fewer external components. However, if a 3.3V output is needed from the LP2953IM, it must be configured as an adjustable regulator, requiring external resistors. This adds a minor complexity and potentially a small quiescent current penalty depending on resistor values. For a dedicated 3.3V requirement, a specific 3.3V fixed regulator might offer slightly lower quiescent current and dropout voltage than an adjustable LP2953IM configured for 3.3V.
In an automotive environment where the LP2953IM might be subjected to reverse polarity events, what are the design considerations to ensure the device is protected, and what are the limitations of its reverse polarity protection feature?
The LP2953IM includes reverse polarity protection, which is a valuable feature for automotive applications. However, this protection is typically achieved through internal diodes. While it can tolerate brief reverse voltage conditions, prolonged or significant reverse polarity could still lead to device stress or failure. For robust automotive designs, it's always recommended to add external reverse polarity protection circuitry, such as a series diode or a P-channel MOSFET, in conjunction with the LP2953IM to provide a higher level of safety.
How does the LP2953IM's 0.8V voltage dropout at 250mA compare to other 250mA linear regulators, and in what scenarios would this dropout voltage be a critical design constraint?
A 0.8V dropout voltage at 250mA means that for the LP2953IM to maintain its regulated output, the input voltage must be at least 0.8V higher than the output voltage. This dropout voltage is moderate for a linear regulator of this class. It becomes a critical constraint in applications with very low input voltage margins, such as when running from a single-cell Li-ion battery that is discharging, or in systems where the supply voltage is close to the desired output. In such cases, a low-dropout (LDO) regulator with a significantly lower dropout voltage would be a better choice.
The LP2953IM is listed as RoHS non-compliant due to containing lead. What are the implications for designing consumer electronics or medical devices that have strict RoHS compliance requirements?
RoHS non-compliance due to lead content means the LP2953IM cannot be used in products that require strict adherence to RoHS directives, commonly found in consumer electronics and medical devices. If your target market or application mandates RoHS compliance, you will need to select an alternative lead-free voltage regulator. This might involve sourcing a different part number or a regulator from a manufacturer that offers RoHS-compliant versions of similar functionality.
What are the considerations for thermal management when operating the LP2953IM at its maximum output current of 250mA in a high ambient temperature environment, and what is the impact on its long-term reliability?
At 250mA output current, the power dissipation of the LP2953IM is given by P = (Vin - Vout) * Iout. If Vin is significantly higher than Vout, the resulting heat can be substantial. In a high ambient temperature environment, this dissipation can push the junction temperature of the LP2953IM beyond its recommended limits, leading to thermal shutdown or reduced reliability. Proper PCB layout with adequate copper planes connected to the package leads for heat sinking, or even an external heatsink, may be necessary. Operating the LP2953IM consistently at high temperatures will accelerate component aging.
If I am migrating an existing design that uses an LM2931-5.0 to the LP2953IM, what are the potential pin-compatibility issues and differences in quiescent current and output current capability?
The LM2931-5.0 is a 5V fixed output LDO with a typical quiescent current of around 300uA and a maximum output current of 100mA. The LP2953IM can be configured for 5V fixed output but has a maximum output current of 250mA and a quiescent current of 170uA. While both are linear regulators, they may not be pin-compatible, and you will need to verify the pinout of the 16-SOIC package of the LP2953IM against your existing design. The LP2953IM offers higher output current capability but has a higher dropout voltage (0.8V vs. typically 0.35V for LM2931-5.0 at 100mA).
What is the purpose of the 'Enable' control feature on the LP2953IM, and how can it be practically implemented in a power sequencing scenario to control the power-up of downstream components?
The 'Enable' pin on the LP2953IM acts as a shutdown input. When pulled low (typically to ground), it disables the regulator, reducing quiescent current to a very low level and effectively shutting off the output. When pulled high, it enables the regulator. This feature is invaluable for power sequencing. For example, in a multi-voltage system, the enable pin of the LP2953IM can be controlled by another power supply rail or a microcontroller's GPIO pin to ensure that its output is activated only after other critical power rails are stable, preventing damage to sensitive components.

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