Overview
| Information | 150mA Low Dropout Voltage Regulator (LDO) |
|---|---|
| Output Option | Fixed |
| VOUT (V) | 5.0 |
| VOUT Adj MIN (V) | - |
| VOUT Adj MAX (V) | - |
| IOUT (mA) | 150 |
| VIN MIN (V) | 2.4 |
| VIN MAX (V) | 30 |
| IQ (µA) | 150 |
| Accuracy (%) | 0.5%, 1% |
| Vdrop (mV) | 300 |
| Output Noise (µVRMS) | 160 |
| PSRR (dB) | - |
| Junction Temp Range (°C) | -40 to 125 |
| Package | NSOIC-8 |
| Features | Enable, Power Good, Current limit and thermal protection |
The SPX2950 and SPX2951 are low power voltage regulators. These devices are an excellent choice for use in battery powered applications such as cordless telephones, radio control systems and portable computers. The SPX2950 and SPX2951 feature low quiescent current and low dropout voltage (typical 20mV at 100μA and 300mV at 150mA). This includes a tight initial tolerance of 0.5% for SPX2950A/SPX2951A, extremely good load and line regulation (0.05% typical) and very low output temperature coefficient (20ppm/°C typical), making the SPX2950/SPX2951 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 voltage. The logic compatible shutdown feature enables the regulator to be switched on and off. The SPX2950 is offered in a 3-pin TO-92 package compatible with other 5.0V, 3.3V regulators. The SPX2951 is available in an 8-lead SOIC package.
- Accurate: 0.5% for SPX2951A
- Very low quiescent current
- Low dropout voltage: 300mV at 150mA
- Extremely tight load and line regulation
- Very low temperature coefficient
- Current and thermal limiting
- Need only 1μF for stability
- Offered in SOIC (SPX2951)
- Direct replacement for LP2951
Documentation & Design Tools
| Type | Title | Version | Date | File Size |
|---|---|---|---|---|
| Data Sheets | SPX2950/51 150mA Low Dropout Voltage Regulator | 1.0.0 | September 2006 | 141.2 KB |
| Product Brochures | Power Management Brochure | R03 | April 2025 | 6.2 MB |
Parts & Purchasing
| Part Number | Pkg Code | Min Temp | Max Temp | Status | Suggested Replacement | PDN |
|---|---|---|---|---|---|---|
| SPX2951ACS-3-3 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951ACS-3-3/TR | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951ACS-5-0 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951ACS-5-0/TR | NSOIC8 | OBS | ACS-L-5-0/TR | |||
| SPX2951ACS-L-3-3 | NSOIC8 | -40 | 125 | OBS | L-3-3 N/A | |
| SPX2951ACS-L-3-3/TR | NSOIC8 | -40 | 125 | OBS | TR N/A | |
| SPX2951ACS-L-5-0 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951ACS-L-5-0/TR | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951CS-3-3 | NSOIC8 | OBS | ||||
| SPX2951CS-3-3/TR | NSOIC8 | OBS | ||||
| SPX2951CS-5-0 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951CS-5-0/TR | NSOIC8 | OBS | ||||
| SPX2951CS-L-3-3 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951CS-L-3-3/TR | NSOIC8 | OBS | ||||
| SPX2951CS-L-5-0 | NSOIC8 | -40 | 125 | OBS | ||
| SPX2951CS-L-5-0/TR | NSOIC8 | -40 | 125 | OBS |
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 |
|---|---|---|---|
| NSOIC8 |
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Notifications
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