LD1580P2T-R集成电路（IC）的线性+开关稳压器规格书PDF中文资料

LD1580P2T-R属于集成电路（IC）的线性+开关稳压器。由意法半导体集团制造生产的LD1580P2T-R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。

描述 Description

The LD1580 is a very low dropout positive linear voltage regulator particularly suitable in applications requiring output currents up to 7 A.

The LD1580 typical dropout voltage is 400 mV at 7 A while it decreases at lighter loads.

This very low dropout is achieved thanks to a second input voltage pin, named VCONTROL, which is also responsible of the output power stage driving.

The LD1580 is provided with an output voltage remote sense pin which reduces dramatically any output voltage variations that could occur due to load changes.

The ADJ pin is still available. A small capacitor on this pin helps to improve transient response.

The LD1580 also features a built-in output current limit function and a thermal shutdown protection with hysteresis which prevents from excessive power dissipation in case of insufficient heatsinking. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 2 at the maximum output current and over the full temperature range.

特性 Features

■ Output current limit

■ Low dropout voltage: typically 400 mV at 7 A output current

■ Output voltage remote sense pin

■ Fast transient response

■ Thermal shutdown protection with hysteresis

■ Wide operating temperature range -40 °C to 125 °C

■ No supply sequencing problems in dual supply mode

■ Output voltages available: adjustable