DESCRIPTION

The LD2981 series are 100mA fixed-output voltage regulator. The low drop-voltage and the ultra low quiescent current make them suitable for low noise, low power applications and in battery powered systems.

■ STABLE WITH LOW ESR CERAMIC CAPACITORS

■ ULTRA LOW DROPOUT VOLTAGE (0.17V TYP. AT 100mA LOAD, 7mV TYP. AT 1mA LOAD)

■ VERY LOW QUIESCENT CURRENT (80µA TYP. AT NO LOAD IN ON MODE; MAX 1µA IN OFF MODE)

■ GUARANTEED OUTPUT CURRENT UP TO 100mA

■ LOGIC-CONTROLLED ELECTRONIC SHUTDOWN

■ OUTPUT VOLTAGE OF 1.5; 1.8; 2.5; 2.85; 3.0; 3.2; 3.3; 3.6; 3.8; 4.0; 4.7; 4.85; 5.0V

■ INTERNAL CURRENT AND THERMAL LIMIT

■ ± 0.75 TOLERANCE OUTPUT VOLTAGE AVAILABLE (A VERSION)

■ OUTPUT LOW NOISE VOLTAGE 160µVRMS

■ TEMPERATURE RANGE: -40 TO 125°C

■ SMALLEST PACKAGE SOT23-5L AND SOT-89

■ FAST DYNAMIC RESPONSE TO LINE AND LOAD CHANGES

LD2981ABM38TR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LD2981ABM38TR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。