LM2611 - 1.4MHz Cuk 转换器

LM2611是TI德州仪器公司的一款转换器（集成开关）产品，LM2611是1.4MHz Cuk 转换器，本站介绍了LM2611的封装应用图解、特点和优点、功能等，并给出了与LM2611相关的TI元器件型号供参考。

LM2611 - 1.4MHz Cuk 转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2611 is a current mode, PWM inverting switching regulator. Operating from a 2.7 - 14V supply, it is capable of producing a regulated negative output voltage of up to −(36-VIN(MAX)). The LM2611 utilizes an input and output inductor, which enables low voltage ripple and RMS current on both the input and the output. With a switching frequency of 1.4MHz, the inductors and output capacitor can be physically small and low cost. High efficiency is achieved through the use of a low RDS(ON) FET.

The LM2611 features a shutdown pin, which can be activated when the part is not needed to lower the Iq and save battery life. A negative feedback (NFB) pin provides a simple method of setting the output voltage, using just two resistors. Cycle-by-cycle current limiting and internal compensation further simplify the use of the LM2611.

The LM2611 is available is a small SOT23-5 package. It comes in two grades:

产品特性

1.4MHz switching frequency
Low RDS(ON) DMOS FET
1mVp-p output ripple
−5V at 300mA from 5V input
Better regulation than a charge pump
Uses tiny capacitors and inductors
Wide input range: 2.7V to 14V
Low shutdown current: <1µA
5-lead SOT-23 package

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