LM137中文资料扩展温度 1.5A 可调节输出负电压稳压器/LDO数据手册TI规格书

描述 Description

The LM137 and LM337-N are adjustable 3-terminal negative voltage regulators capable of supplying–1.5 A or more currents over an output voltage range of –1.25 V to –37 V. It requires only two external resistors to set the output voltage and one output capacitor for frequency compensation. The circuit design has been optimized for excellent regulation and low thermal transients. Further, the LM137 and LM337-N feature internal current limiting, thermal shutdown and safe-area compensation, making it virtually blowout-proof against overloads.

The LM137 and LM337-N are ideal complements to the LM117 and LM317 adjustable positive regulators. The LM137 has a wider operating temperature range than the LM337-N and is also offered in military and space qualified versions.

特性 Features

• 1.5-A Output Current
• Line Regulation 0.01%/V (Typical)
• Load Regulation 0.3% (Typical)
• 77-dB Ripple Rejection
• 50 ppm/°C Temperature Coefficient
• Thermal Overload Protection
• Internal Short-Circuit Current Limiting Protections

简介

LM137属于集成电路（IC）的线性+开关稳压器。由TI制造生产的LM137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。