Overview
Information | 100mA Low Dropout Voltage Regulator (LDOs) |
---|---|
Output Option | Fixed |
VOUT (V) | 3.3, 5 |
VOUT Adj MIN (V) | |
VOUT Adj MAX (V) | |
IOUT (mA) | 100 |
VIN MIN (V) | 2.4 |
VIN MAX (V) | 30 |
IQ (µA) | 150 |
Accuracy (%) | 0.5%, 1% |
Vdrop (mV) | 380 |
Output Noise (µVRMS) | 100 |
PSRR (dB) | - |
Junction Temp Range (°C) | -40 to 125 |
Package | NSOIC-8 |
Features | Enable, Power Good, Current limit, thermal protection |
The LP2950 and LP2951 are low power voltage regulators. These devices are an excellent choice for use in battery powered application such as cordless telephones, radio control systems and portable computers. The LP2950 and LP2951 feature low quiescent current and low dropout voltage (typical 50mV at light load and 380mV at 100mA). This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and very low output temperature coefficient (20 ppm/ºC typical), making the LP2950/LP2951 useful as a low power voltage reference.
The error flag output feature is used as a power-on reset for warning of a low output voltage, due to a falling input voltage. The logic-compatible shutdown feature enables the regulator to be switched on and off. The LP2950 is offered in a 3-pin TO-92 package compatible with other 5V, 3.3V regulators. The LP2951 is available in an 8-lead SOIC package.
- 5.0V and 3.3V versions at 100mA output
- Very low quiescent current
- Low dropout voltage: 380mV at 100mA
- Extremely tight load and line regulation
- Very low temperature coefficient
- Current and thermal limiting
- Need only 1 uF for stability
- Error flag warns of output dropout
- Logic controlled electronic shutdown
- 5.0V part allows adjustable output from 1.25V to 29V
Documentation & Design Tools
Type | Title | Version | Date | File Size |
---|---|---|---|---|
Data Sheets | LP2950/LP2951 Data Sheet | I | June 2023 | 3.4 MB |
Application Notes | ANP-02, Thermal Considerations for Linear Regulators | A | November 2006 | 351 KB |
Application Notes | ANP-03, Thermal Calculator | A | February 2001 | 27 KB |
Product Brochures | Power Management Brochure | May 2024 | 7.1 MB |
Quality & RoHS
Part Number | RoHS | Exempt | RoHS | Halogen Free | REACH | TSCA | MSL Rating / Peak Reflow | Package |
---|---|---|---|---|---|---|---|
LP2951CS-L-5-0/TR | N | Y | Y | Y | Y | L1 / 260ᵒC | NSOIC8 |
LP2951CS-L-3-3/TR | N | Y | Y | Y | Y | L1 / 260ᵒC | NSOIC8 |
Click on the links above to download the Certificate of Non-Use of Hazardous Substances.
Parts & Purchasing
Part Number | Pkg Code | Status | Suggested Replacement | Buy Now | Order Samples | PDN |
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LP2951ACS-3-3 | NSOIC8 | OBS | ||||
LP2951ACS-3-3/TR | NSOIC8 | OBS | ||||
LP2951ACS-5-0 | NSOIC8 | OBS | ||||
LP2951ACS-5-0/TR | NSOIC8 | OBS | ||||
LP2951ACS-L-3-3 | NSOIC8 | OBS | LP2951CS-L | |||
LP2951ACS-L-3-3/TR | NSOIC8 | OBS | LP2951CS-L | |||
LP2951ACS-L-5-0 | NSOIC8 | OBS | LP2951CS-L | |||
LP2951ACS-L-5-0/TR | NSOIC8 | OBS | LP2951CS-L | |||
LP2951CS-3-3 | NSOIC8 | OBS | ||||
LP2951CS-3-3/TR | NSOIC8 | OBS | ||||
LP2951CS-5-0 | NSOIC8 | OBS | ||||
LP2951CS-5-0/TR | NSOIC8 | OBS | ||||
LP2951CS-L-3-3 | NSOIC8 | OBS | LP2951CS-L-3-3/TR | |||
LP2951CS-L-3-3/TR | NSOIC8 | Active | Click Buy Now | Order | ||
LP2951CS-L-5-0 | NSOIC8 | OBS | LP2951CS-L-5-0/TR | |||
LP2951CS-L-5-0/TR | NSOIC8 | Active | Click Buy Now | Order |
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
Packaging
Pkg Code | Details | Quantities | Dimensions |
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NSOIC8 |
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Notifications
Distribution Date | Description | File |
---|---|---|
07/17/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM A: Fixed MBB label logo for DX204001 to MaxLinear logo. ADDENDUM B: Replaced ‘All other affected products outer box label’ with clearer pictures. Corrected Date Issued (from original PCN) issue date +90 days to August 30, 2023. | PCN & PDN Download |
06/01/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. | PCN & PDN Download |
06/01/2023 | In 2023, MaxLinear will be converting all shipping labels for the parts noted from an EXAR format to MaxLinear’s label. During this transition customers may receive either label. This change affects only shipping and packing labels. This change will not affect the part number, part marking, manufacturing process or manufacturing sites. Only work in progress material will be converted. Existing inventory from MaxLinear’s warehouse, channel sales, distributor, and such, will not be converted. Hence, customers may experience receiving mixed shipments with both Exar and MaxLinear labels for some period until existing inventory of old labels is eventually cleared out. Situation is product to product with no predictable way to determine when all old labels will be exhausted. No change to product form, fit, function and reliability. ADDENDUM: Fixed MBB label logo for DX204001 to MaxLinear logo. | PCN & PDN Download |
02/23/2017 | Qualification of alternate assembly subcon, ANST, China. | PCN & PDN Download |
02/15/2017 | Qualification of alternate assembly subcon, ANST. | PCN & PDN Download |
07/26/2016 | Product discontinuation notification. Discontinued. | PCN & PDN Download |
04/13/2016 | Qualification of alternate assembly subcon, JCET. | PCN & PDN Download |
07/02/2013 | Qualification of an alternate qualified assembly supplier, ASE Chung-Li (Taiwan) for the 8L NSOIC package using copper wire bonding. Material change and alternate assembly supplier qualified. | PCN & PDN Download |
03/23/2010 | Alternate qualified assembly supplier Capacity enhancement | PCN & PDN Download |
12/07/2009 | Enhancement of NSOIC 8, NSOIC14 and NSOIC16 packages to Green (halogen-free) via Mold Compound & Die Attach Material. Enhance packages to be Green (halogen-free). | PCN & PDN Download |
03/04/2009 | Notice of Obsolescence Discontinued by Exar Corporation due to low market demand | PCN & PDN Download |
02/28/2007 | Product Obsolescence Letter and Discontinuation Notification. Discontinued. | PCN & PDN Download |
02/02/2006 | Announcing transfer of certain Power Management and Interface Products from Hillview fabrication and facility to wafer foundary Silan. See attached Product List Power Management and Interface products as listed are being transfer to external wafer foundry, due to cessation of operations of the sipex Hillview Fabrication manufacturing site | PCN & PDN Download |
FAQs & Support
Search our list of FAQs for answers to common technical questions.
For material content, environmental, quality and reliability questions review the Quality tab or visit our Quality page.
For ordering information and general customer service visit our Contact Us page.
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