LM2611BMFX ,1.4MHz Cuk ConverterElectrical CharacteristicsSpecifications in standard type face are for T = 25˚C and those with bold ..
LM2612ABL ,400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage Circuitsfeatures include soft start and cur-n Uses small ceramic capacitorsrent overload protection.n Inter ..
LM2612ABLX ,400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage CircuitsPin DescriptionPin Number Pin Name FunctionA1 FB Feedback Analog Input. Connect to the output at th ..
LM2612ABP ,400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage CircuitsPin DescriptionPin Number(*) Pin Name FunctionA1 FB Feedback Analog Input. Connect to the output at ..
LM2612ABPX ,400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage CircuitsFeaturesLow-currenthystereticPFMmodereducesquiescentcurrentn Sub-miniature 10-pin micro SMD package ..
LM2612BBL ,400mA Sub-miniature, Programmable, Step-Down DC-DC Converter for Ultra Low-Voltage CircuitsGeneral Description Key Specificationsn Operates from a single LiION cell (2.8V to 5.5V)The LM2612 ..
LM4890MM/NOPB ,1 Watt Audio Power Amplifier 8-VSSOP -40 to 85FEATURES DESCRIPTIONThe LM4890 is an audio power amplifier primarily2• Available in Space-Saving Pa ..
LM4890MMX ,1 Watt Audio Power AmplifierLM4890 1 Watt Audio Power AmplifierAugust 2004LM48901 Watt Audio Power Amplifier
LM4890MX ,1 Watt Audio Power Amplifierapplications in mobile phones and other por-j Power Output at 5.0V & 1% THD 1W(typ.)table communica ..
LM4891LD ,1 Watt Audio Power Amplifierfeaturesaninternalther-n No output coupling capacitors, snubber networks ormal shutdown protection ..
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LM4891MM ,1 Watt Audio Power AmplifierFeaturesprovide high quality output power with a minimal amount ofexternal components. The LM4891 d ..
LM2611AMF-LM2611AMFX-LM2611BMF-LM2611BMFX
1.4MHz Cuk Converter
LM2611
1.4MHz Cuk Converter
General DescriptionThe LM2611isa current mode, PWM inverting switching
regulator. Operating froma2.7- 14V supply,itis capableof
producinga regulated negative output voltageofupto −(36-
VIN(MAX)). The LM2611 utilizesan input and output inductor,
which enables low voltage ripple and RMS currenton both
the input and the output. Witha switching frequencyof
1.4MHz, the inductors and output capacitor canbe physi-
cally small and low cost. High efficiencyis achieved through
the useofa low RDS(ON) FET.
The LM2611 featuresa shutdown pin, which canbe acti-
vated when the partisnot neededto lower theIq and save
battery life.A negative feedback (NFB)pin providesa simple
methodof settingthe output voltage, using just two resistors.
Cycle-by-cycle current limiting and internal compensation
further simplifythe useof the LM2611.
The LM2611is availableisa small SOT23-5 package.It
comesin two grades:
GradeA GradeB
Current Limit 1.2A 0.9A
RDS(ON) 0.5Ω 0.7Ω
Features 1.4MHz switching frequency Low RDS(ON) DMOS FET 1mVp-p output ripple −5Vat 300mA from5V input Better regulation thana charge pump Uses tiny capacitors and inductors Wide input range: 2.7Vto 14V Low shutdown current: <1uA 5-lead SOT-23 package
Applications MR Head Bias Digital camera CCD bias LCD bias GaAs FET bias Positiveto negative conversion
Typical Application CircuitJanuary 2005
LM261
1.4MHz
Cuk
Converter
