Datasheet Linear Technology LTC3838-1 — Datenblatt

HerstellerLinear Technology
SerieLTC3838-1

Dualer, schneller und präziser DC / DC-Abwärtsregler mit doppelter Differenzausgangserkennung

Datenblätter

Datasheet LTC3838-1
PDF, 890 Kb, Sprache: en, Datei hochgeladen: Sep 23, 2017, Seiten: 54
Dual, Fast, Accurate Step-Down DC/DC Controller with Dual Differential Output Sensing
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Preise

Verpackung

LTC3838EUHF-1#PBFLTC3838EUHF-1#TRPBFLTC3838IUHF-1#PBFLTC3838IUHF-1#TRPBF
N1234
Package5x7 QFN-38
Paketumrisszeichnung
5x7 QFN-38
Paketumrisszeichnung
5x7 QFN-38
Paketumrisszeichnung
5x7 QFN-38
Paketumrisszeichnung
Package CodeUHFUHFUHFUHF
Package Index05-08-170105-08-170105-08-170105-08-1701
Pin Count38383838

Parameter

Parameters / ModelsLTC3838EUHF-1#PBFLTC3838EUHF-1#TRPBFLTC3838IUHF-1#PBFLTC3838IUHF-1#TRPBF
ArchitectureControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current Mode
Demo BoardsDC1997A-ADC1997A-ADC1997A-ADC1997A-A
Design ToolsLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD Model
Export Controlnononono
FeaturesDifferential Remote Sense, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, TrackingDifferential Remote Sense, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, TrackingDifferential Remote Sense, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, TrackingDifferential Remote Sense, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking
Frequency, kHz2000200020002000
Frequency Adjust Range200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz
Frequency Sync Range200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz
Integrated Inductornononono
Ishutdown, µA15151515
Isupply, mA3333
Max Phases2222
Monolithicnononono
Number of Outputs2222
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A30303030
Output Current 2, A30303030
Polyphaseyesyesyesyes
Sense ResistorRsense, DCRRsense, DCRRsense, DCRRsense, DCR
Switch Current, A30303030
Switch Current 2, A30303030
Synchronousyesyesyesyes
TopologyBuckBuckBuckBuck
Topology 1BuckBuckBuckBuck
Topology 2BuckBuckBuckBuck
Vin Max, V38383838
Vin Min, V4.54.54.54.5
Vout Max, V5.55.55.55.5
Vout Maximum5.5V5.5V5.5V5.5V
Vout Min, V0.60.60.60.6
Vout Min 2, V0.60.60.60.6
Vref Accuracy Over Temp, %0.670.670.670.67

Öko-Plan

LTC3838EUHF-1#PBFLTC3838EUHF-1#TRPBFLTC3838IUHF-1#PBFLTC3838IUHF-1#TRPBF
RoHSCompliantCompliantCompliantCompliant

Anwendungshinweise

  • Modeling and Loop Compensation Design of Switching Mode Power Supplies &mdash AN149
    PDF, 1.4 Mb, Datei veröffentlicht: Mar 23, 2015
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Artikel

  • Dual, Fast, Step-Down Controller's External Reference Input Enables Dynamic Voltage Scaling from 0.4V to 5.5V and 0.3% Total Combined Regulation Accuracy &mdash LT Journal
    PDF, 2.8 Mb, Datei veröffentlicht: Apr 10, 2013
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Modellreihe

Herstellerklassifikation

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers