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LP2951CSD-3.0/NOPB
Texas Instruments
IC REG LIN POS ADJ 100MA 8WSON
3410 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 100mA 8-WSON (4x4)
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5.0 / 5.0
- (394 Ratings)
LP2951CSD-3.0/NOPB
Product Overview
1363393
DiGi Electronics Part Number
LP2951CSD-3.0/NOPB-DGManufacturer
Texas Instruments
LP2951CSD-3.0/NOPB
Description
IC REG LIN POS ADJ 100MA 8WSONInventory
3410 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 100mA 8-WSON (4x4)
Quantity
Minimum 1
Minimum 1
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LP2951CSD-3.0/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Adjustable (Fixed)
Number of Regulators
1
Voltage - Input (Max)
30V
Voltage - Output (Min/Fixed)
1.235V (3V)
Voltage - Output (Max)
29V
Voltage Dropout (Max)
0.6V @ 100mA
Current - Output
100mA
Current - Quiescent (Iq)
120 µA
Current - Supply (Max)
14 mA
PSRR
-
Control Features
Enable
Protection Features
Over Current, Over Temperature, Short Circuit
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-WDFN Exposed Pad
Supplier Device Package
8-WSON (4x4)
Base Product Number
LP2951
Datasheet & Documents
HTML Datasheet
LP2951CSD-3.0/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-35205-2
296-35205-1
LP2951CSD-3.0/NOPB-DG
LP2951CSD30NOPB
-LP2951CSD-3.0-NDR
296-35205-6
Standard Package
1,000
Alternative Parts
PART 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
신속하고 안전하게 도착하는 배송 서비스에 만족하고 있어요.
de desembre 02, 2025
每次訂購都能享受到迅速的出貨速度，品質保障令人放心。
de desembre 02, 2025
Ich bin beeindruckt von der hohen Packungsqualität, die sicherstellt, dass alles unbeschadet ankommt.
de desembre 02, 2025
DiGi Electronics provides practical solutions that are both reliable and budget-conscious.
de desembre 02, 2025
I love their pricing strategy—it helps me stay on budget.
de desembre 02, 2025
DiGi Electronics consistently delivers good value with a personable and helpful customer service team.
de desembre 02, 2025
The professionalism of their customer service is top-notch; I felt well taken care of.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LP2951CSD-3.0/NOPB in a high-temperature industrial environment near its 125°C junction limit?
When designing the LP2951CSD-3.0/NOPB into high-temperature applications, a major risk is thermal runaway due to insufficient PCB copper for heatsinking. With a 0.6V dropout at 100mA and up to 30V input, power dissipation can exceed 1.5W in scenarios like 24V input to 3V output. Ensure at least 100mm² of exposed thermal pad connected to internal ground planes, and simulate thermal performance under worst-case ambient conditions. Consider derating current above 85°C ambient to maintain reliable operation within the -40°C to 125°C TJ range.
How does the LP2951CSD-3.0/NOPB compare to the LT1761-3.0 when selecting a low-quiescent-current 3V linear regulator for battery-powered sensor nodes?
The LP2951CSD-3.0/NOPB draws 120µA quiescent current versus 50µA for the LT1761-3.0, making the LT1761 better suited for ultra-low-power applications. However, the LP2951CSD-3.0/NOPB supports up to 30V input, offering greater headroom in systems with unregulated or fluctuating power rails (e.g., 24V industrial lines), while the LT1761 maxes at 20V. Also, the LP2951CSD-3.0/NOPB integrates built-in over-temperature and over-current protection, enhancing reliability in unpredictable environments where fault tolerance is critical.
Can the LP2951CSD-3.0/NOPB be safely used as a drop-in replacement for the obsolete LM2951CT-3.0 in an existing 24V PLC module design?
Yes, the LP2951CSD-3.0/NOPB can replace the LM2951CT-3.0 in most cases, but PCB layout must be reviewed due to the WSON-8 (4x4mm) package differing from the LM2951’s TO-220 or SOT-89. The LP2951CSD-3.0/NOPB’s exposed thermal pad requires direct grounding for thermal performance. Also verify that enable logic levels are compatible—LP2951CSD-3.0/NOPB uses TTL-compatible logic, while older variants may have different thresholds. Confirm transient response under PLCS switching loads due to differences in internal compensation.
What layout best practices minimize noise and stability issues when integrating the LP2951CSD-3.0/NOPB in a mixed-signal data acquisition system?
To ensure stability with the LP2951CSD-3.0/NOPB, place a minimum 10µF ceramic output capacitor with low ESL (X7R or X5R) within 5mm of the output pin, and use a 1µF input capacitor close to the VIN pin. Avoid routing high-speed or switching signals near the feedback node, especially if adjusting output voltage externally. For fixed 3.0V versions, bypass the adjust pin with a 10nF capacitor to reduce noise sensitivity. Proper grounding of the exposed pad to a solid ground plane improves both stability and EMI resilience in sensitive ADC or amplifier circuits.
What are the reliability implications of operating the LP2951CSD-3.0/NOPB near its maximum 100mA load current in a sealed outdoor enclosure?
Operating the LP2951CSD-3.0/NOPB near 100mA in a sealed outdoor enclosure risks premature failure due to sustained high junction temperatures. Without active cooling, self-heating can exceed 40–50°C above ambient, especially with input voltages over 12V. This accelerates electromigration and reduces MTBF. To mitigate, limit continuous load to 70–80mA unless thermal validation confirms safe operation. Additionally, use conformal coating to prevent moisture-related leakage currents and leverage the built-in over-temperature shutdown for fail-safe protection in unpredictable environmental conditions.
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.
LP2951CSD-3.0/NOPB CAD Models
Texas Instruments LP2951CSD-3.0/NOPB PCB symbols & footprints
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