Top

Product details

Parameters

Topology CuK, Inverting Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Min) (V) -1.23 Features Light Load Efficiency Switch current limit (Typ) (A) 1.2 Switching frequency (Min) (kHz) 1400 Switching frequency (Max) (kHz) 1400 Iq (Typ) (mA) 1.8 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Features

  • 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
open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Description

The LM2611 is a current mode, PWM inverting switching regulator. Operating from a 2.7-V to 4-V supply, it is capable of producing a regulated negative output voltage of up to &ndash(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 1.4 MHz, 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 as a small 5-pin, SOT-23 package and comes in two grades. Grade A has a 1.2-A current limit and 0.5-Ω RDS(ON), and Grade B has a 0.9-A current limit and 0.7-Ω RDS(ON).

open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)
Download

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 2
Type Title Date
* Datasheet LM2611 1.4-MHz Cuk Converter datasheet (Rev. J) Dec. 31, 2015
User guides AN-1203 LM2611 Demoboard (Rev. B) Apr. 24, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$25.00
Description

1.4MHz Cuk Converter

Features
  • 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

 

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos

Related videos