The L4931 series are very Low Drop regulators available in TO-220, SO-8, DPAK, PPAK and TO-92 packages and in a wide range of output voltages. The very Low Drop voltage (0.4V) and the very low quiescent current make them particularly suitable for Low Noise, Low Power applications and specially in battery powered systems.

1. Very low dropout voltage (0.4V)

2. Very low quiescent current

3. (Typ. 50 µA in off mode, 600µA in on mode)

4. Output current up to 250 mA

5. Logic-controlled electronic shutdown

6. Output voltages of 1.5; 2.5; 2.7; 3; 3.3; 3.5; 4;4.7; 5; 8; 12V

7. Internal current and thermal limit

8. Only 2.2µF for stability

L4931属于集成电路（IC） > 线性 + 开关稳压器。意法半导体（ST）集团制造生产的L4931稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。