DESCRIPTION

The L149 is a general purpose power booster in Pentawatt ® package consisting of a quasi-complentary darlington output stage with the associated biasing system an inhibit facility. The device is particularly suited for use with an operational amplifier inside a closed loop configuration to increase output current.

■ HIGH OUTPUT CURRENT (4A peak)

■ HIGH CURRENT GAIN (10.000 typ.)

■ OPERATION UP TO ± 20 V

■ THERMAL PROTECTION

■ SHORT CIRCUIT PROTECTION

■ OPERATION WITHIN SOA

■ HIGH SLEW-RATE (30 V/ms)

L149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L149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。