Product details

Topology CuK, Inverting Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Max) (V) -1.23 Vout (Min) (V) -32 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 Iout (Max) (A) 0.4 Rating Catalog Operating temperature range (C) -40 to 125
Topology CuK, Inverting Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Max) (V) -1.23 Vout (Min) (V) -32 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 Iout (Max) (A) 0.4 Rating Catalog Operating temperature range (C) -40 to 125
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • 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
  • 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

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).

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).

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* Data sheet LM2611 1.4-MHz Cuk Converter datasheet (Rev. J) 31 Dec 2015
User guide AN-1203 LM2611 Demoboard (Rev. B) 24 Apr 2013

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Evaluation board

LM2611EVAL — 1.4MHz Cuk Converter

1.4MHz Cuk Converter

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SOT-23 (DBV) 5 View options

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