LP2951-N是TI公司的一款单通道LDO产品，LP2951-N是可调节微功耗稳压器系列，本页介绍了LP2951-N的产品说明、应用、特性等，并给出了与LP2951-N相关的TI元器件型号供参考。
LP2951-N - 可调节微功耗稳压器系列 - 单通道LDO - 线性稳压器(LDO) - TI公司（Texas Instruments，德州仪器）
- 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
- High-Efficiency Linear Regulator
- Regulator with Undervoltage Shutdown
- Low dropout Battery-powered Regulator
- Snap-ON/Snap-OFF Regulator
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 LP2950-N/LP2951-N 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% typ.), extremely good load and line regulation (.05% typ.) 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-lead LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LP2950-N | TO-92 (3) | 4.30 mm x 4.30 mm |
| TO-252 (3) | 9.91 mm x 6.58 mm | |
| LP2951-N | SOIC (8) | 4.90 mm x 3.91 mm |
| VSSOP (8) | 3.00 mm x 3.00 mm | |
| WSON (8) | 4.00 mm x 4.00 mm | |
| PDIP (8) | 9.81 mm x 6.35 mm |
