LP2951-50-Q1是TI公司的一款单通道LDO产品，LP2951-50-Q1是汽车类单路输出、100mA、固定电源、宽输入电压范围，本页介绍了LP2951-50-Q1的产品说明、应用、特性等，并给出了与LP2951-50-Q1相关的TI元器件型号供参考。
LP2951-50-Q1 - 汽车类单路输出、100mA、固定电源、宽输入电压范围 - 单通道LDO - 线性稳压器(LDO) - TI公司（Texas Instruments，德州仪器）
- Qualified for Automotive Applications
- Wide Input Range: Up to 35 V
- Rated Output Current of 100 mA
- Low Dropout: 380 mV (Typ) at 100 mA
- Low Quiescent Current: 75 μA (Typ)
- Tight Line Regulation: 0.03% (Typ)
- Tight Load Regulation: 0.04% (Typ)
- High VO Accuracy
- 1.4% at 25°C
- 2% Over Temperature
- Can Be Used as a Regulator or Reference
- Stable With Low ESR (>12mΩ) Capacitors
- Current- and Thermal-Limiting Features
- 8-Pin Package
- Fixed Voltages: 5V/ADJ and 3.3V/ADJ
- Low-Voltage Error Signal on Falling Output
- Shutdown Capability
- Remote Sense Capability for Optimal Output Regulation and Accuracy
- Automotive Power
- Battery to MCU Regulator
- Sensor Supply
- Infotainment
- Body Control Module
- Secondary Side Regulation
- Point of Load Regulation
The LP2951-xx-Q1 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 35 V. The 8-pin LP2951-xx-Q1 is able to output either a fixed or adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the LP2951-xx-Q1 outputs a fixed 5 V and 3.3 V (depending on the version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value between 1.235 V to 30 V.
The 8-pin LP2951-xx-Q1 also offers additional functionality that makes it particularly suitable for battery-powered applications. For example, a logic-compatible shutdown feature allows the regulator to be put in standby mode for power savings. In addition, there is a built-in supervisor reset function in which the ERROR output goes low when VOUT drops by 6% of its nominal value for whatever reasons – due to a drop in VIN, current limiting, or thermal shutdown.
The LP295x-xx-Q1 devices are designed to minimize all error contributions to the output voltage. With a tight output tolerance (0.5% at 25°C), a very low output voltage temperature coefficient (20 ppm typical), extremely good line and load regulation (0.3% and 0.4% typical), and remote sensing capability, the parts can be used as either low-power voltage references or 100-mA regulators.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LP2951-33-Q1 | SOIC (8) | 4.90 mm × 3.90 mm |
| LP2591-50-Q1 | ||
| LP2951-50-Q1 | WSON (8) | 3.00 mm × 3.00 mm |
