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LM3351MMNSN/a1500avaiSwitched Capacitor Voltage Converter
LM3351MMXNSN/a477avaiSwitched Capacitor Voltage Converter


LM3351MM ,Switched Capacitor Voltage ConverterPin DescriptionPin Name Function1 Cap1+ Positive terminal for the first chargepump capacitor.2 Cap1 ..
LM3351MMX ,Switched Capacitor Voltage ConverterElectrical Characteristics3/2 Step-Up Voltage ConverterSpecifications in standard type face are for ..
LM3352MTC-2.5 ,Regulated 200mA Buck-Boost Switched Capacitor DC/DC ConverterFeaturesn Regulated V with ±3% accuracyThe LM3352 is a CMOS switched capacitor DC/DC con- OUTverter ..
LM3352MTC-3.0 ,Regulated 200mA Buck-Boost Switched Capacitor DC/DC ConverterPin DescriptionPin Number Name Function1 GND Ground*2 C3− Negative Terminal for C33 C3+ Positive Te ..
LM3352MTC3.3 ,Regulated 200mA Buck-Boost Switched Capacitor DC/DC ConverterLM3352 Regulated 200 mA Buck-Boost Switched Capacitor DC/DC ConverterSeptember 1999LM3352Regulated ..
LM3352MTC-3.3 ,Regulated 200mA Buck-Boost Switched Capacitor DC/DC ConverterFeaturesn Regulated V with ±3% accuracyThe LM3352 is a CMOS switched capacitor DC/DC con- OUTverter ..
LMD18201T ,3-Amp, 55 Volt H-BridgeFeaturesn Numerically controlled machineryn Delivers up to 3A continuous outputn Computer printers ..
LMD18201T/NOPB ,3-Amp, 55 Volt H-Bridge 11-TO-220 -40 to 125Electrical CharacteristicsThe following specifications apply for V = 42V, unless otherwise specifie ..
LMD18245 ,3A, 55V DMOS Full-Bridge Motor DriverFeaturesYDMOS power stage rated at 55V and 3A continuousThe LMD18245 full-bridge power amplifier in ..
LMD18245 ,3A, 55V DMOS Full-Bridge Motor DriverApplicationsstructure eliminates the discrete diodes typically required toYclamp bipolar power stag ..
LMD18245T ,3A, 55V DMOS Full-Bridge Motor Driverapplications, an externalDAC can be used.Functional Block and Connection Diagram(15-Lead TO-220 Mol ..
LMD18245T/NOPB ,3A, 55V DMOS Full-Bridge Motor Driver 15-TO-220 -40 to 125 SNVS110E –APRIL 1998–REVISED APRIL 2013Pinout Descriptions(See Functional Block and Connection Dia ..


LM3351MM-LM3351MMX
Switched Capacitor Voltage Converter
LM3351
Switched Capacitor Voltage Converter
General Description

The LM3351isa CMOS charge-pump voltage converter
which efficiently providesa 3.3Vto5V step-up,or5Vto 3.3V
step-down. The LM3351is pinfor pin compatible with the
LM3350 but consumes 66% less quiescent current. The
LM3351 uses four small, low cost capacitorsto provide the
voltage conversion.It eliminates the cost, size and radiated
EMI relatedto inductor based circuits,orthe power lossofa
linear regulator. Operating power conversion efficiency
greater than 90% provides ideal performance for battery
powered portable systems.
The architecture providesa fixed voltage conversion ratioof
3/2or 2/3. Thusit canbe usedfor other DC-DC conversions well.
Features
Conversionof 3.3Vto 5V,or5Vto 3.3V 200 kHz switch frequency allows useof very small,
inexpensive capacitors. 4.2Ω typical step-up output impedance 1.8Ω typical step-down output impedance 95% typical power conversion efficiencyat50 mA 250nA typical shutdown current No inductor required Low quiescent current extends battarylife Small Mini SO-8 package
Applications
Any mixed5V and 3.3V system Laptop computers and PDAs Handheld instrumentation PCMCIA cards
Basic Operating Circuits
Step-Up Converter Step-Down Converter

10014601 10014602
December 1999
LM3351
Switched
Capacitor
oltage
Converter
ic,good price


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