LM2611是TI公司的一款转换器（集成开关）产品，LM2611是1.4MHz Cuk 转换器，本页介绍了LM2611的产品说明、应用、特性等，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 - TI公司（Texas Instruments，德州仪器）
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:
- 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
