LX8940IP集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LX8940IP属于集成电路（IC）的线性+开关稳压器。由美高森美公司制造生产的LX8940IP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。

DESCRIPTION

The LX8940 is a 5V, low dropout, low quiescent current regulator rated for 1A of output current. It can regulate with as low as 0.4V headroom between the input and output voltages, thus minimizing power dissipation. In addition, it can be used in applications where worst case supplies require a low input-output differential to maintain regulation. This feature makes it ideal for computer monitors that have to comply with energy-efficient / Green PC programs, where the input voltage drops to only a few tenths of a volt above the output when power supply enters sleep-mode operation.

KEY FEATURES

■ 2 Internally Trimmed Output

■ Output Current In Excess Of 1A

■ Input-Output Differential Less Than 0.4V At 1A

■ Reverse Battery Protection

■ 60V Load Dump Protection

■ -50V Reverse Transient Protection

■ Short Circuit Protection

■ Internal Thermal Overload Protection

■ Available In 3-Lead Plastic TO- 220

■ Drops In Most lM2940 Sockets

APPLICATIONS

■ Small Headroom Battery Applications

■ High Efficiency Linear Regulators

■ Post Regulators For Switching Power Supplies

■ Green PC Monitor Applications