LM78S40 - 通用开关稳压器子系统

LM78S40是TI德州仪器公司的一款转换器（集成开关）产品，LM78S40是通用开关稳压器子系统，本站介绍了LM78S40的封装应用图解、特点和优点、功能等，并给出了与LM78S40相关的TI元器件型号供参考。

LM78S40 - 通用开关稳压器子系统 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM78S40 is a monolithic regulator subsystem consisting of all the active building blocks necessary for switching regulator systems. The device consists of a temperature compensated voltage reference, a duty-cycle controllable oscillator with an active current limit circuit, an error amplifier, high current, high voltage output switch, a power diode and an uncommitted operational amplifier. The device can drive external NPN or PNP transistors when currents in excess of 1.5A or voltages in excess of 40V are required. The device can be used for step-down, step-up or inverting switching regulators as well as for series pass regulators. It features wide supply voltage range, low standby power dissipation, high efficiency and low drift. It is useful for any stand-alone, low part count switching system and works extremely well in battery operated systems.

产品特性

Step-up, step-down or inverting switching regulators
Output adjustable from 1.25V to 40V
Peak currents to 1.5A without external transistors
Operation from 2.5V to 40V input
Low standby current drain
80 dB line and load regulation
High gain, high current, independent op amp
Pulse width modulation with no double pulsing

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