Datasheet Linear Technology LTC3838

ManufacturerLinear Technology
SeriesLTC3838

Dual, Fast, Accurate Step- Down DC/DC Controller with Differential Output Sensing

Datasheets

Datasheet LTC3838
PDF, 746 Kb, Language: en, File uploaded: Sep 23, 2017, Pages: 54
Dual, Fast, Accurate Step- Down DC/DC Controller with Differential Output Sensing
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Prices

Packaging

LTC3838EFE#PBFLTC3838EFE#TRPBFLTC3838EUHF#PBFLTC3838EUHF#TRPBFLTC3838IFE#PBFLTC3838IFE#TRPBFLTC3838IUHF#PBFLTC3838IUHF#TRPBF
N12345678
PackageTSSOP-38
Package Outline Drawing
TSSOP-38
Package Outline Drawing
5x7 QFN-38
Package Outline Drawing
5x7 QFN-38
Package Outline Drawing
TSSOP-38
Package Outline Drawing
TSSOP-38
Package Outline Drawing
5x7 QFN-38
Package Outline Drawing
5x7 QFN-38
Package Outline Drawing
Package CodeFEFEUHFUHFFEFEUHFUHF
Package Index05-08-177205-08-177205-08-170105-08-170105-08-177205-08-177205-08-170105-08-1701
Pin Count3838383838383838

Parametrics

Parameters / ModelsLTC3838EFE#PBFLTC3838EFE#TRPBFLTC3838EUHF#PBFLTC3838EUHF#TRPBFLTC3838IFE#PBFLTC3838IFE#TRPBFLTC3838IUHF#PBFLTC3838IUHF#TRPBF
ArchitectureControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current ModeControlled On-Time Valley Current Mode
Demo BoardsDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-BDC1626A-A,DC1626A-B,DC1801A-A,DC1801A-B
Design ToolsLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD File
Export Controlnononononononono
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, 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, TrackingDifferential Remote Sense, External Synchronization, Resistor Set Frequency, DCR Current Sense, Power Good, Tracking
Frequency, kHz20002000200020002000200020002000
Frequency Adjust Range200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz
Frequency Sync Range200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz200kHz to 2MHz
Integrated Inductornononononononono
Ishutdown, µA1515151515151515
Isupply, mA33333333
Max Phases22222222
Monolithicnononononononono
Number of Outputs22222222
Operating Temperature Range, °C0 to 850 to 850 to 850 to 85-40 to 85-40 to 85-40 to 85-40 to 85
Output Current, A3030303030303030
Output Current 2, A3030303030303030
Polyphaseyesyesyesyesyesyesyesyes
Sense ResistorRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCR
Switch Current, A3030303030303030
Switch Current 2, A3030303030303030
Synchronousyesyesyesyesyesyesyesyes
TopologyBuckBuckBuckBuckBuckBuckBuckBuck
Topology 1BuckBuckBuckBuckBuckBuckBuckBuck
Topology 2BuckBuckBuckBuckBuckBuckBuckBuck
Vin Max, V3838383838383838
Vin Min, V4.54.54.54.54.54.54.54.5
Vout Max, V5.55.55.55.55.55.55.55.5
Vout Maximum5.5V5.5V5.5V5.5V5.5V5.5V5.5V5.5V
Vout Min, V0.60.60.60.60.60.60.60.6
Vout Min 2, V0.60.60.60.60.60.60.60.6
Vref Accuracy Over Temp, %0.670.670.670.670.670.670.670.67

Eco Plan

LTC3838EFE#PBFLTC3838EFE#TRPBFLTC3838EUHF#PBFLTC3838EUHF#TRPBFLTC3838IFE#PBFLTC3838IFE#TRPBFLTC3838IUHF#PBFLTC3838IUHF#TRPBF
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Application Notes

  • Modeling and Loop Compensation Design of Switching Mode Power Supplies &mdash AN149
    PDF, 1.4 Mb, File published: Mar 23, 2015
    Extract from the document

Design Notes

  • Dual Controller Provides 2Ојs Step Response and 92% Efficiency for 1.5V Rails &mdash DN505
    PDF, 111 Kb, File published: Apr 3, 2012
    Extract from the document

Articles

  • 2MHz Dual DC/DC Controller Halves Settling Time of Load Release Transients, Features 0.67% Differential VOUT Accuracy and Is Primed for High Step-Down Ratios &mdash LT Journal
    PDF, 2.7 Mb, File published: Apr 24, 2012
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  • 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, File published: Apr 10, 2013
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Model Line

Manufacturer's Classification

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