LDL212中文资料1.2A低压降线性稳压器IC数据手册ST规格书

描述 Description

The LDL212 provides 1.2 A of maximum current from an input voltage range from 2.5 V to 18 V, with a typical dropout voltage of 350 mV @ 1.2 A.

The high power supply rejection ratio of 87 dB at 120 Hz, and more than 40 dB at 100 kHz, makes the LDL212 suitable for direct regulation in SMPS and secondary linear regulation in DC-DC converters. The LDL212 goes to shutdown mode due to the enable logic control function, reducing the total current consumption.

The device also includes the current limit, SOA and thermal protections.

特性 Features

• Input voltage from 2.5 V to 18 V
• 20 V AMR
• Any fixed output voltages, from 1.2 V to 12 V in 100 mV steps (from 1.2 V to 6.6 V in 50 mV steps) available on request
• Adjustable version from 1.18 V to VIN - VDROP(MAX)
• Guaranteed output current 1.2 A
• Typical dropout 350 mV @ 1.2 A
• Undervoltage lockout
• Enable function
• Internal thermal, current and power limitation
• High PSRR: 87 dB @ 120 Hz, 75 dB @ 1 kHz
• Operating temperature range: -40 °C to 125 °C
• Packages SO-8 batwing plastic micropackage, DFN6 (3x3) and DFN6 (2x2)

简介

LDL212属于集成电路（IC）的线性+开关稳压器。由制造生产的LDL212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。