LM2743MTC ,Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controllerfeatures a precision threshold for power supplyoutput, which is typically meant to be connected to ..
LM2743MTCX ,Low Voltage N-Channel MOSFET Synchronous Buck Regulator ControllerPin Descriptioninternally connected to the non-inverting input of the errorBOOT (Pin 1) - Bootstrap ..
LM2743MTCX/NOPB ,2.2-16V, Voltage Mode Synchronous Buck Controller with Tracking 14-TSSOP -40 to 125 SNVS276H–APRIL 2004–REVISED OCTOBER 20155 Pin Configuration and FunctionsPW Package14-Pin TSSOPTop ..
LM2744MTC ,Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller with External ReferencePin Descriptioninternally connected to the non-inverting input of the errorBOOT (Pin 1) - Bootstrap ..
LM2744MTCX ,Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller with External Referencefeatures a precision threshold for power supplyany other low voltage source through a pull-up resis ..
LM2745MTC , Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
LM6154BCM ,Dual and Quad 75 MHz GBW Rail-to-Rail I/O Operational AmplifiersElectrical Characteristics+ − + +>Unless otherwise specified, all limits guaranteed for T = 25˚C, V ..
LM6154BCMX ,Dual and Quad 75 MHz GBW Rail-to-Rail I/O Operational Amplifiersapplications, from bat-n Barcode scannerstery operated systems with large bandwidth requirements to ..
LM6154BCN ,Dual and Quad High Speed/Low Power 75 MHz GBW Rail-to-Rail I/O Operational Amplifiersapplications, from bat-n Barcode scannerstery operated systems with large bandwidth requirements to ..
LM615AIN ,LM615 Quad Comparator and Adjustable ReferenceApplicationsLM615 is a space-saving monolithic alternative to a multi-YAdjustable threshold detecto ..
LM615IM ,LM615 Quad Comparator and Adjustable Referencefeatures operation over aYTight initial tolerance available g0.6% (25 C)§shunt current range of 17m ..
LM615IN ,LM615 Quad Comparator and Adjustable ReferenceFeaturesThe comparators have an input range which extends to theCOMPARATORSnegative supply, and hav ..
LM2743MTC-LM2743MTCX
Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2743
Low Voltage N-Channel MOSFET Synchronous Buck
Regulator Controller
General DescriptionThe LM2743isa high-speed synchronous buck regulator
controller withan accurate feedback voltage accuracyof±2%.It can provide simple down conversionto output volt-
agesas lowas 0.6V. Though the control sectionsoftheIC
are ratedfor3to 6V, the driver sections are designedto
accept input supply railsas highas 16V. The useof adaptive
non-overlapping MOSFET gate drivers helps avoid potential
shoot-through problems while maintaining high efficiency.
TheICis designedfor the more cost-effective optionof
driving only N-channel MOSFETsin both the high-side and
low-side positions.It sensesthe low-side switch voltage drop
for providinga simple, adjustable current limit.
The fixed-frequency voltage-mode PWM control architecture adjustable from50 kHzto1 MHz with one external resis-
tor. This wide rangeof switching frequency givesthe power
supply designer the flexibilityto make better tradeoffs be-
tween component size, cost and efficiency.
Features include soft-start, input undervoltage lockout
(UVLO) and Power Good (basedon both undervoltage and
overvoltage detection).In addition, the shutdownpinof the canbe usedfor providing startup delay, andthe soft-start
pin canbe usedfor implementing precise tracking,for the
purposeof sequencing with respecttoan external rail.
Features Power stage input voltage from1Vto 16V Control stage input voltage from3Vto6V Output voltage adjustable downto 0.6V Power good flag and shutdown Output overvoltage and undervoltage detection ±2% feedback voltage accuracy over temperature Low-side adjustable current sensing Adjustable soft-start Tracking and sequencing with shutdown and soft start
pins Switching frequency from50 kHzto1 MHz TSSOP-14 package
Applications 3.3V Buck Regulation Cable Modem, DSL and ADSL LaserJet andInkJet Printers Low Voltage Power Modules DSP, ASIC, Core andI/O
Typical ApplicationFebruary 2005
LM2743
Low
oltage
N-Channel
MOSFET
Synchronous
Buck
Regulator
Controller
