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LP2966IMM-1833
Texas Instruments
IC REG LIN 1.8/3.3V 150MA 8VSSOP
2189 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 2 Output 150mA 8-VSSOP
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5.0 / 5.0
- (143 Ratings)
LP2966IMM-1833
Product Overview
1308381
DiGi Electronics Part Number
LP2966IMM-1833-DGManufacturer
Texas Instruments
LP2966IMM-1833
Description
IC REG LIN 1.8/3.3V 150MA 8VSSOPInventory
2189 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 2 Output 150mA 8-VSSOP
Quantity
Minimum 1
Minimum 1
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LP2966IMM-1833 Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Obsolete
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
2
Voltage - Input (Max)
7V
Voltage - Output (Min/Fixed)
1.8V, 3.3V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.27V @ 150mA
Current - Output
150mA
Current - Quiescent (Iq)
300 µA
Current - Supply (Max)
600 µA
PSRR
60dB ~ 40dB (120Hz)
Control Features
Enable
Protection Features
Over Current, Over Temperature, Short Circuit
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package
8-VSSOP
Base Product Number
LP2966
Datasheet & Documents
HTML Datasheet
LP2966IMM-1833-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
LP2966IMM-1833CT
LP2966IMM-1833TR
LP2966IMM1833
LP2966IMM-1833DKR
Standard Package
1,000
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
항상 신속한 배송과 우수한 제품으로 기대를 저버리지 않네요.
de desembre 02, 2025
DiGi Electronicsのおかげで、予定通りに修理作業を完了できました。商品も堅牢で安心です。
de desembre 02, 2025
商品が安全に届くことを常に期待できる信頼性の高い会社です。
de desembre 02, 2025
Received my order rapidly, and the packaging was thoughtfully designed to be sustainable.
de desembre 02, 2025
DiGi Electronics’ products are built to last, which is essential for my long-term DIY projects.
de desembre 02, 2025
Their commitment to transparency simplifies my decision-making process.
de desembre 02, 2025
Their products have proven to be both durable and cost-effective for long-term gaming.
de desembre 02, 2025
Timely shipments and prompt support make them a trusted partner.
de desembre 02, 2025
I’m grateful for their innovative approach to packaging that benefits the environment.
de desembre 02, 2025
The packaging is robust and professional, and the prices are hard to beat.
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Frequently Asked Questions (FAQ)
Is the LP2966IMM-1833 still a viable option for new designs given that it's marked as obsolete, and what are the key risks of using it in a production design-in today?
The LP2966IMM-1833 is officially obsolete, which means Texas Instruments no longer manufactures it, and future supply cannot be guaranteed. Using it in a new design-in introduces significant long-term risks, including sudden end-of-life (EOL) notices, allocation issues, and potential counterfeit parts in the aftermarket. While 2100 units may be available now, this inventory is finite and not replenishable. For new designs, we strongly recommend migrating to an active alternative such as the TPS7A8101 or LP5907 to ensure supply chain continuity, full technical support, and compliance with modern environmental standards like RoHS.
Can I safely replace the LP2966IMM-1833 with the LP2966IMM-1833/NOPB in an existing board layout without redesigning the PCB?
Yes, the LP2966IMM-1833/NOPB is the RoHS-compliant version of the same device and is pin-to-pin and footprint-compatible with the original LP2966IMM-1833 in the 8-VSSOP package. Both share identical electrical characteristics, including input/output voltages (1.8V and 3.3V), 150mA output current, and thermal performance. However, verify solder profile compatibility during assembly, as lead-free finishes may require slightly higher reflow temperatures. This substitution is a low-risk drop-in replacement if your application requires RoHS compliance or you're sourcing from distributors carrying only the /NOPB variant.
What are the real-world thermal implications of operating the LP2966IMM-1833 at 150mA load with a 5V input, especially in a compact enclosure with limited airflow?
At 5V input and 150mA load on either output (e.g., 3.3V rail), the LP2966IMM-1833 dissipates approximately (5V – 3.3V) × 0.15A = 255mW per regulator. With a typical θJA of ~160°C/W for the 8-VSSOP package, this results in a junction temperature rise of about 41°C above ambient. In a sealed enclosure at 50°C ambient, the junction could reach ~91°C—well within the 125°C limit but leaving minimal margin for worst-case conditions. To mitigate risk, ensure adequate copper pour under the thermal pad, avoid stacking high-power components nearby, and consider derating output current if ambient exceeds 60°C.
How does the PSRR performance of the LP2966IMM-1833 compare to modern LDOs like the TPS7A4700 when filtering noisy digital supply rails in mixed-signal systems?
The LP2966IMM-1833 offers 60dB PSRR at 120Hz, which is adequate for basic noise filtering but degrades significantly above 10kHz, dropping to around 40dB. In contrast, the TPS7A4700 maintains >70dB PSRR up to 100kHz, making it far superior for suppressing high-frequency switching noise from DC-DC converters or digital logic. If your LP2966IMM-1833-based design feeds sensitive analog circuits (e.g., ADCs or RF stages), consider adding a π-filter (LC or RC) at the input or upgrading to a modern LDO with better high-frequency rejection to avoid signal integrity issues.
Can the LP2966IMM-1833’s enable pin be safely driven directly from a 3.3V microcontroller GPIO, and what precautions should I take to avoid latch-up or unintended shutdown during power-up sequencing?
Yes, the enable pin of the LP2966IMM-1833 is compatible with 3.3V logic levels and can be driven directly by a microcontroller GPIO. However, to prevent unintended turn-on during MCU boot-up or brownout conditions, add a 100kΩ pull-down resistor to ensure the regulator remains off until the GPIO is actively driven high. Also, avoid floating the enable pin, as this may cause erratic behavior. If your system requires strict power sequencing (e.g., 1.8V before 3.3V), use separate enable controls or a supervisor IC to manage timing, since the LP2966IMM-1833 lacks built-in sequencing logic.
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.
LP2966IMM-1833 CAD Models
Texas Instruments LP2966IMM-1833 PCB symbols & footprints
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