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LM2611 Datasheet

Part Number LM2611
Manufacturers National Semiconductor
Logo National Semiconductor
Description 1.4MHz Cuk Converter
Datasheet LM2611 DatasheetLM2611 Datasheet (PDF)

LM2611 1.4MHz Cuk Converter January 2002 LM2611 1.4MHz Cuk Converter General Description 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 physical.

  LM2611   LM2611






Part Number LM2611
Manufacturers Texas Instruments
Logo Texas Instruments
Description 1.4-MHz Cuk Converter
Datasheet LM2611 DatasheetLM2611 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2611 SNOS965J – JUNE 2001 – REVISED DECEMBER 2015 LM2611 1.4-MHz Cuk Converter 1 Features •1 1.4-MHz Switching Frequency • Low RDS(ON) DMOS FET • 1-mVp-p Output Ripple • −5 V at 300 mA From 5-V Input • Better Regulation Than a Charge Pump • Uses Tiny Capacitors and Inductors • Wide Input Range: 2.7 V to 14 V • Low Shutdown Current: <1 µA • 5-Pin SOT-23 Package 2 Applications • MR Head Bias • Digital Came.

  LM2611   LM2611







1.4MHz Cuk Converter

LM2611 1.4MHz Cuk Converter January 2002 LM2611 1.4MHz Cuk Converter General Description 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: Grade A Current Limit RDS(ON) 1.2A 0.5Ω Grade B 0.9A 0.7Ω Features n n n n n n n n n 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: < 1uA 5-lead SOT-23 package Applications n n n n n MR Head Bias Digital camera CCD bias LCD bias GaAs FET bias Positive to negative conversion Typical Application Circuit 20018117 © 2002 Na.


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