Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
LP2953IM
Texas Instruments
IC REG LIN POS ADJ 250MA 16SOIC
2278 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 250mA 16-SOIC
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (96 Ratings)
LP2953IM
Product Overview
1368702
DiGi Electronics Part Number
LP2953IM-DGManufacturer
Texas Instruments
LP2953IM
Description
IC REG LIN POS ADJ 250MA 16SOICInventory
2278 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 250mA 16-SOIC
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
LP2953IM Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Not For New Designs
Output Configuration
Positive
Output Type
Adjustable (Fixed)
Number of Regulators
1
Voltage - Input (Max)
30V
Voltage - Output (Min/Fixed)
1.23V (5V)
Voltage - Output (Max)
29V
Voltage Dropout (Max)
0.8V @ 250mA
Current - Output
250mA
Current - Quiescent (Iq)
170 µA
Current - Supply (Max)
33 mA
PSRR
-
Control Features
Enable
Protection Features
Over Current, Over Temperature, Reverse Polarity
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Supplier Device Package
16-SOIC
Base Product Number
LP2953
Datasheet & Documents
HTML Datasheet
LP2953IM-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
TEXTISLP2953IM
2156-LP2953IM-TI
Standard Package
48
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
재고 확보와 고객 지원 모두 뛰어나서 고객 만족도가 높습니다.
de desembre 02, 2025
製品の検品もしっかり行っている印象で、安心して受け取ることができました。
de desembre 02, 2025
サポートチームの対応がとても親切で、安心して長期契約しています。
de desembre 02, 2025
Their offerings are built tough, ideal for demanding environments and everyday use.
de desembre 02, 2025
I always feel assured knowing they uphold transparency and support me after the sale.
de desembre 02, 2025
Their staff demonstrates genuine care, making the shopping experience stress-free.
de desembre 02, 2025
Well-packed items and rapid delivery made this a very positive experience.
de desembre 02, 2025
The tracking history provided by DiGi Electronics allows for precise delivery scheduling.
de desembre 02, 2025
Shipping was lightning quick, and it arrived perfectly packaged.
de desembre 02, 2025
I feel secure shopping with DiGi Electronics because of their transparent pricing and consistent quality.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LP2953IM in new power supply designs given its 'Not For New Designs' status?
The LP2953IM is marked as 'Not For New Designs' by Texas Instruments, indicating it may be nearing end-of-life with limited future availability. While functional and reliable, using the LP2953IM in new designs introduces supply chain risks, including potential obsolescence and lack of manufacturer support. For long-term production, evaluate recommended replacements like the LP2952IM/NOPB or newer low-dropout regulators (LDOs) with similar adjustable output and enable control. If you must use the LP2953IM, ensure sufficient stock buffers and confirm second-source availability to mitigate discontinuation risk during product lifecycle.
How does the LP2953IM's 0.8V dropout voltage at 250mA impact thermal performance in high-ambient-temperature applications?
The LP2953IM's dropout voltage of 0.8V at 250mA creates significant power dissipation—up to (Vin - Vout) × Iout—especially when regulating from higher input voltages down to lower outputs (e.g., 12V to 3.3V). In high-ambient environments (up to 125°C), this can lead to thermal shutdown due to junction temperature rise. To mitigate risk, use the LP2953IM only in low headroom applications (e.g., 6V to 5V) or ensure adequate PCB copper for heat spreading. Derate current under high thermal stress and verify performance with thermal imaging during prototyping.
Can the LP2953IM safely replace the LM317 in adjustable voltage regulator circuits, and what are the key circuit differences?
Yes, the LP2953IM can replace the LM317 in many adjustable regulator applications, offering advantages like lower quiescent current (170 µA vs. ~5 mA), enable control, and built-in over-temperature and over-current protection. However, the LP2953IM has a higher reference voltage (1.23V) and requires a minimum load for regulation stability—unlike the LM317, which sources output current even at no load. When replacing LM317 with the LP2953IM, add a pull-down resistor (e.g., 10kΩ) on the output to ensure regulation under light loads. Also, verify adjust pin current requirements to prevent output voltage drift.
What are the reliability concerns when using the LP2953IM in automotive environments with reverse polarity protection?
The LP2953IM includes internal reverse polarity protection, which is beneficial in automotive environments prone to battery misconnection. However, this feature does not eliminate the need for external protection under sustained reverse voltage or load dump conditions. In automotive designs, always supplement the LP2953IM with a series Schottky diode or MOSFET-based reverse isolation to limit stress on the internal protection structure. Additionally, monitor thermal performance in under-hood locations where ambient exceeds 85°C, as prolonged high-temperature operation may accelerate parameter drift over the LP2953IM's lifetime.
How should I handle the enable pin on the LP2953IM to avoid unintended regulator cycling during power-up?
The LP2953IM features an enable pin that must be actively driven high (>2.3V typical) to activate regulation. Floating the enable pin can cause erratic startup or output oscillation due to noise coupling. To ensure reliable turn-on, tie the enable pin to a stable logic source or use a pull-up resistor (e.g., 10kΩ) to VIN through a bypass capacitor for noise immunity. If sequencing is required, coordinate the enable signal with other system regulators using a supervisor IC. Avoid slow-rising enable signals, as this may lead to prolonged bias current draw (up to 33mA supply current in active mode) and overheating during startup transients.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LP2953IM CAD Models
Texas Instruments LP2953IM PCB symbols & footprints
productDetail
