LP2951-33DRGR 德州儀器 TI 
TPS54060ADGQR 德州儀器 TI 
LP2951 的特性
Wide Input Range: Up to 30 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 (>12 mΩ) Capacitors
Current- and Thermal-Limiting Features
LP2950 Only (3-Pin)
Fixed-Output Voltages of 5 V, 3.3 V, and 3 V
LP2951 Only (8-Pin Package)
Fixed- or Adjustable-Output Voltages:
5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJLow-Voltage Error Signal on Falling Output
Shutdown Capability
Remote Sense Capability for Optimal Output
Regulation and Accuracy
LP2951 的說明
The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin LP2951 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 outputs a fixed 5 V, 3.3 V, or 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.
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