LM3311SQ ,Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation SwitchPin Descriptions (Continued)Pin Name Function13 LV LDO power input.IN14 SS Boost converter soft sta ..
LM3311SQX ,Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation SwitchPin DescriptionsPin Name Function1 NC Not internally connected.2 VGHM Output of GPM circuit. This o ..
LM331AN ,Precision Voltage-to-Frequency ConverterFeaturestrain at a frequency precisely proportional to the applied in-n Guaranteed linearity 0.01% ..
LM331N ,Precision Voltage-to-Frequency ConverterLM231A/LM231/LM331A/LM331 Precision Voltage-to-Frequency ConvertersJune 1999LM231A/LM231/LM331A/LM3 ..
LM331N/NOPB ,Precision Voltage-to-Frequency Converter 8-PDIP 0 to 70Features 3 DescriptionThe LMx31 family of voltage-to-frequency converters1• Ensured Linearity 0.01% ..
LM333T ,3-Ampere Adjustable Negative RegulatorsElectrical Characteristics LM333 (Continued)=Specifications with standard typeface are for T 25˚C, ..
LMC7221BIM5X/NOPB ,Tiny CMOS Comparator with Rail-to-Rail Input and Open Drain Output 5-SOT-23 -40 to 85FEATURES DESCRIPTIONThe LM7221 is a micropower CMOS comparator2• Tiny 5-Pin SOT-23 package saves sp ..
LMC7225IM ,Micro-Power / Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak PackageFeaturesThe LMC7215/LMC7225 are ultra low power comparators (Typical unless otherwise noted)with a ..
LMC7225IM5 ,Micro-Power, Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak PackageElectrical Characteristics+ −Unless otherwise specified, all limits guaranteed for T = 25˚C, V = 2. ..
LMC7225IM5X ,Micro-Power, Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak PackageElectrical Characteristics+ −Unless otherwise specified, all limits guaranteed for T = 25˚C, V = 2. ..
LMC7225IMX ,Micro-Power / Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak Packageapplications. n Window comparators, multivibratorsConnection Diagrams8–Pin SO–8 5–Pin SOT23-5DS0128 ..
LMC7225IMX ,Micro-Power / Rail-to-Rail CMOS Comparators with Open-Drain/Push-Pull Outputs and TinyPak PackageApplicationsan external resistor, the output of the comparator can ben Laptop computersused as a le ..
LM3311SQ-LM3311SQX
Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch
LM3311
Step-Up PWM DC/DC Converter with Integrated LDO,
Op-Amp, and Gate Pulse Modulation Switch
General DescriptionThe LM3311isa step-up DC/DC converter integrated with LDO,an Operational Amplifier, anda gate pulse modu-
lation switch. The boost (step-up) converteris usedto gen-
eratean adjustable output voltage and featuresalow RDSON
internal switchfor maximum efficiency. The operating fre-
quencyis selectable between 660kHz and 1.28MHz allowing
forthe useof small external components.An external soft-
start pin enables the userto tailor the soft-start timetoa
specific application and limit the inrush current. The LDO
also hasan adjustable output voltage andis stable using
ceramic output capacitors. The Op-Ampis capableof
sourcing/sinking 135mAof current (typical). The gate pulse
modulation switch can operate witha VGH voltageof5Vto
30V. The LM3311is availableina low profile 24-lead LLP
package.
Features Boost converter witha 2A, 0.18Ω switch Boost output voltage adjustableupto 20V Operating voltage rangeof 2.5Vto7V 660kHz/1.28MHzpin selectable switching frequency Adjustable soft-start function Input undervoltage protection Over temperature protection Adjustable low dropout linear regulator (LDO) Integrated Op-Amp Integrated gate pulse modulation (GPM) switch 24-Lead LLP package
Applications TFT Bias Supplies Portable Applications
Typical Application CircuitSeptember 2005
LM331
Step-Up
PWM
DC/DC
Converter
with
Integrated
LDO,
Op-Amp,
and
Gate
Pulse
Modulation
Switch
