100-mA, 30-V, low-dropout voltage regulator with power good & enable
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range: 2.3 V to 30 V
- 5-V, 3-V, and 3.3-V Output Voltage Versions Available
- High Accuracy Output Voltage
- Ensured 100-mA Output Current
- Extremely Low Quiescent Current
- Low Dropout Voltage
- Extremely Tight Load and Line Regulation
- Very Low Temperature Coefficient
- Use as Regulator or Reference
- Needs Minimum Capacitance for Stability
- Current and Thermal Limiting
- Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
- LP2951-N Versions Only:
- Error Flag Warns of Output Dropout
- Logic-Controlled Electronic Shutdown
- Output Programmable From 1.24 V to 29 V
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Description
The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.
Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.
One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.
The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Small form factor
- Designed for fixed- and adjustable-output voltage
- 1.235-V to 29-V adjustable-output voltage
- Landing patterns for additional input and output capacitors
- Landing pattern for bypass capacitor
Design tools & simulation
Reference designs
Design files
-
download TIDA-010015 BOM.pdf (116KB) -
download TIDA-010015 Assembly Drawing.pdf (348KB) -
download TIDA-010015 PCB.pdf (1379KB) -
download TIDA-010015 CAD Files.zip (3060KB) -
download TIDA-010015 Gerber.zip (1752KB)
Design files
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download PMP30763 BOM.pdf (149KB) -
download PMP30763 Assembly Drawing.pdf (370KB) -
download PMP30763 PCB.pdf (1598KB) -
download PMP30763 CAD Files.zip (3324KB) -
download PMP30763 Gerber.zip (856KB)
Design files
-
download TIDA-010009 BOM.pdf (208KB) -
download TIDA-010009 Assembly Drawing.pdf (298KB) -
download TIDA-010009 PCB.pdf (1663KB) -
download TIDA-010009 CAD Files.zip (2752KB) -
download TIDA-010009 Gerber.zip (4145KB)
Design files
-
download TIDA-00777 BOM.pdf (135KB) -
download TIDA-00777 Assembly Drawing.zip (339KB) -
download TIDA-00777 PCB.pdf (1974KB) -
download TIDA-00777 Altium .zip (1854KB) -
download TIDA-00777 Gerber.zip (2290KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
PDIP (P) | 8 | View options |
SOIC (D) | 8 | View options |
VSSOP (DGK) | 8 | View options |
WSON (NGT) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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