LM2677S-5.0 ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncLM2677 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncOctober 2003LM2677®S ..
LM2677S-5.0 ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncFeatures 3 DescriptionThe LM2677 series of regulators are monolithic1• Efficiency up to 92%integrat ..
LM2677S-ADJ ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncFeaturesn Efficiency up to 92%The LM2677 series of regulators are monolithic integratedcircuits whi ..
LM2677SD-3.3 ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncFeaturesn Efficiency up to 92%The LM2677 series of regulators are monolithic integratedcircuits whi ..
LM2677SD-5.0 ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncFeaturesn Efficiency up to 92%The LM2677 series of regulators are monolithic integratedcircuits whi ..
LM2677SD-ADJ ,SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncLM2677 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with SyncOctober 2003LM2677®S ..
LM5112SD ,Tiny 7A MOSFET Gate DriverPin DescriptionPin Name Description Application Information1 IN Non-inverting input pin TTL compati ..
LM5115AMT , Secondary Side Post Regulator/DC-DC Converter with Power-up/Power-down Tracking
LM5115MTC ,75V, Secondary Side Post Regulator/ Synchronous Buck Controller 16-TSSOP -40 to 125features include a low dropout(LDO) bias regulator, error amplifier, precisionreference, adaptive d ..
LM5115MTCX ,75V, Secondary Side Post Regulator/ Synchronous Buck Controller 16-TSSOP -40 to 125 SNVS343E –MARCH 2005–REVISED MARCH 2013Pin Descriptions (continued)Pin Name Description Applicatio ..
LM5115MTCX/NOPB ,75V, Secondary Side Post Regulator/ Synchronous Buck Controller 16-TSSOP -40 to 125Block DiagramVCCVBIAS 7V LDOREGULATORVCCLOGICUVLO7VTHERMALLIMITSYNCHBIVSYNC CC15 PA2.5kCLK2.5kHOR Q ..
LM5115SD/NOPB ,75V, Secondary Side Post Regulator/ Synchronous Buck Controller 16-WSON Connection DiagramCS 1 16 VBIASVOUT 2 15 HB116CS VBIASAGND 314 HO2 15CO 4 HS13V HBOUT EPCOMP 512 VC ..
LM2677S-5.0
SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator with Sync 7-DDPAK/TO-263 -40 to 125
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5V/5A
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LM2677SNVS077J–MAY 2004–REVISED JUNE 2016
LM2677 SIMPLE SWITCHER® High Efficiency 5-A Step-Down Voltage Regulator with Sync Features Efficiencyupto 92% Simple and Easyto Design Using Off-the-Shelf
External Components 100-mΩ DMOS Output Switch 3.3-V, 5-V, and 12-V Fixed Output and Adjustable
(1.2Vto37V) Versions 50-μA Standby Current When Switched OFF ±2% Maximum Output Tolerance Over Full Line
and Load Conditions Wide Input Voltage Range:8Vto40V External Sync Clock Capability (280 kHzto
400 kHz) 260-kHz Fixed Frequency Internal Oscillator −40°Cto 125°C Operating Junction Temperature
Range
Applications Simpleto Design, High Efficiency(> 90%) Step-
Down Switching Regulators Efficient System Preregulator for Linear Voltage
Regulators Battery Chargers Communications and Radio Equipment Regulator
With Synchronized Clock Frequency
DescriptionThe LM2677 series of regulators are monolithic
integrated circuits which provide all of the active
functions fora step-down (buck) switching regulator
capableof driving upto 5-A loads with excellent line
and load regulation characteristics. High efficiency
(>90%)is obtained through the use ofa low on-
resistance DMOS power switch. The series consists fixed output voltagesof 3.3-V, 5-V, and 12-V and adjustable output version.
The SIMPLE SWITCHER® concept provides fora
complete design usinga minimum numberof external
components. The switching clock frequency can be
provided by an internal fixed frequency oscillator
(260 kHz)or from an externally provided clockin the
rangeof 280 kHzto 400 kHz, which allows the useof
physically smaller-sized components.A family of
standard inductors for use with the LM2677 are
available from several manufacturers to greatly
simplify the design process. The external Sync clock
provides direct and precise controlof the output ripple
frequency for consistent filtering or frequency
spectrum positioning.
The LM2677 series also has built-in thermal
shutdown, current-limiting, and an ON/OFF control
input that can power down the regulatortoa low
50-μA quiescent-current standby condition. The
output voltageis ensuredtoa ±2% tolerance.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
