LP2951-50QDRQ1 TI The LP2951-xx-Q1 devices are bipolar, low-dropout 1• Qualified for Automotive Applications voltage regulators that can accommodate a wide • Wide Input Range: Up to 35 V input supply-voltage range of up to 35 V. The 8-pin • Rated Output Current of 100 mA LP2951-xx-Q1 is able to output either a fixed or • Low Dropout: 380 mV (Typ) at 100 mA adjustable output from the same device. By tying the OUTPUT and SENSE pins together, and the • Low Quiescent Current: 75 μA (Typ) FEEDBACK and VTAP pins together, the LP2951-xx- • Tight Line Regulation: 0.03% (Typ) Q1 outputs a fixed 5 V and 3.3 V (depending on the • Tight Load Regulation: 0.04% (Typ) version). Alternatively, by leaving the SENSE and VTAP pins open and connecting FEEDBACK to an • High VO Accuracy external resistor divider, the output can be set to any – 1.4% at 25°C value between 1.235 V to 30 V. – 2% Over Temperature The 8-pin LP2951-xx-Q1 also offers additional • Can Be Used as a Regulator or Reference functionality that makes it particularly suitable for • Stable With Low ESR (>12 mΩ) Capacitors battery-powered applications. For example, a logiccompatible shutdown feature allows the regulator to • Current- and Thermal-Limiting Features be put in standby mode for power savings. In • 8-Pin Package addition, there is a built-in supervisor reset function in – Fixed Voltages: 5 V/ADJ and 3.3 V/ADJ which the ERROR output goes low when VOUT drops – Low-Voltage Error Signal on Falling Output by 6% of its nominal value for whatever reasons – due to a drop in VIN, current limiting, or thermal – Shutdown Capability shutdown. – Remote Sense Capability for Optimal Output The LP295x-xx-Q1 devices are designed to minimize Regulation and Accuracy all error contributions to the output voltage. With a tight output tolerance (0.5% at 25°C), a very low 2 Applications output voltage temperature coefficient (20 ppm • Automotive Power typical), extremely good line and load regulation (0.3% and 0.4% typical), and remote sensing – Battery to MCU Regulator capability, the parts can be used as either low-power – Sensor Supply voltage references or 100-mA regulators.