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Datasheet Linear Technology LTC3872

ManufacturerLinear Technology
SeriesLTC3872

No RSENSE Current Mode Boost DC/DC Controller

Datasheets

  • Download » Datasheet PDF, 257 Kb, Revision: C, File uploaded: Sep 24, 2017
    LTC3872 - No RSENSE Current Mode Boost DC/DC Controller
    Docket ↓
    LTC3872
    No RSENSE
    Current Mode Boost
    DC/DC Controller
    Features Description No Current Sense Resistor Required
    n V
    OUT up to 60V
    n Constant Frequency 550kHz Operatio Internal Soft-Start and Optional External Soft-Start
    n Adjustable Current Limit
    n Pulse Skipping at Light Load
    n V Range: 2.75V to 9.8V
    IN
    n В±1.5% Voltage Reference Accuracy
    n Current Mode Operation for Excellent Line and Load
    Transient Response
    n Low Profile (1mm) SOT-23 and 2mm Г— 3mm DFN
    Packages The LTCВ®3872 is a constant frequency current mode
    boost DC/DC controller that drives an N-channel power
    MOSFET and requires very few external components. The
    No RSENSETM architecture eliminates the need for a sense
    resistor, improves efficiency and saves board space. n Applications n n n n The LTC3872 provides excellent AC and DC load and line
    regulation with В±1.5% output voltage accuracy. It incorporates an undervoltage lockout feature that shuts down
    the device when the input voltage falls below 2.3V. ...

Prices

Packaging

LTC3872EDDB#PBFLTC3872EDDB#TRMPBFLTC3872EDDB#TRPBFLTC3872ETS8#PBFLTC3872ETS8#TRMPBFLTC3872ETS8#TRPBFLTC3872HDDB#PBFLTC3872HDDB#TRMPBFLTC3872HDDB#TRPBFLTC3872HTS8#PBFLTC3872HTS8#TRMPBFLTC3872HTS8#TRPBFLTC3872IDDB#PBFLTC3872IDDB#TRMPBFLTC3872IDDB#TRPBFLTC3872ITS8#PBFLTC3872ITS8#TRMPBFLTC3872ITS8#TRPBF
Package3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
3x2 DFN-8
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
SOT-23
Package Outline Drawing
Package CodeDDBDDBDDBTS8TS8TS8DDBDDBDDBTS8TS8TS8DDBDDBDDBTS8TS8TS8
Package Index05-08-170205-08-170205-08-170205-08-163705-08-163705-08-163705-08-170205-08-170205-08-170205-08-163705-08-163705-08-163705-08-170205-08-170205-08-170205-08-163705-08-163705-08-1637
Pin Count888888888888888888

Parametrics

LTC3872EDDB#PBFLTC3872EDDB#TRMPBFLTC3872EDDB#TRPBFLTC3872ETS8#PBFLTC3872ETS8#TRMPBFLTC3872ETS8#TRPBFLTC3872HDDB#PBFLTC3872HDDB#TRMPBFLTC3872HDDB#TRPBFLTC3872HTS8#PBFLTC3872HTS8#TRMPBFLTC3872HTS8#TRPBFLTC3872IDDB#PBFLTC3872IDDB#TRMPBFLTC3872IDDB#TRPBFLTC3872ITS8#PBFLTC3872ITS8#TRMPBFLTC3872ITS8#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-ADC989B-A
Design ToolsLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice File
Export Controlnononononononononononononononononono
FeaturesNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo RsenseNo Rsense
Frequency, kHz750750750750750750750750750750750750750750750750750750
Integrated Inductornononononononononononononononononono
Ishutdown, µA888888888888888888
Isupply, mA0.250.250.250.250.250.250.250.250.250.250.250.250.250.250.250.250.250.25
Max Phases111111111111111111
Monolithicnononononononononononononononononono
Number of Outputs111111111111111111
Operating Temperature Range, °C0 to 850 to 850 to 850 to 850 to 850 to 85-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 125-40 to 85-40 to 85-40 to 85-40 to 85-40 to 85-40 to 85
Polyphasenononononononononononononononononono
Sense ResistorNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNoneNone
Switch Current, A101010101010101010101010101010101010
Synchronousnononononononononononononononononono
TopologyBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, Flyback
Topology 1Boost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, FlybackBoost, Sepic, Flyback
Vin Max, V9.89.89.89.89.89.89.89.89.89.89.89.89.89.89.89.89.89.8
Vin Min, V2.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.75
Vin Min Startup, V2.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.752.75
Vout Max, V606060606060606060606060606060606060
Vout Maximum60V60V60V60V60V60V60V60V60V60V60V60V60V60V60V60V60V60V
Vout Min, V1.21.21.21.21.21.21.21.21.21.21.21.21.21.21.21.21.21.2
Vswitch Max, V606060606060606060606060606060606060

Eco Plan

Articles

  • Download » Articles - LT Journal PDF, 291 Kb, File published: Nov 22, 2006
    Miniscule Step-Up Controller Yields Wide Input and Output Ranges
    Docket ↓
    DESIGN IDEAS L Miniscule Step-Up Controller Yields
    Wide Input and Output Ranges
    by Theo Phillips and Hong Ren
    Introduction Space-Saving Design 17.4k
    1%
    ITH 47pF LTC3872
    GND
    11k
    1% 34.8k
    1% VIN VFB CIN2
    470ВµF VIN
    3.3V SW
    M1 CIN
    1nF controllers that use a constant on-time
    switching scheme, which can result
    in a lower operating frequency and
    physically larger filter components.
    No RSENSEв„ў technology eliminates
    the need for a separate current-D1 COUT
    100ВµF
    x2 VOUT
    5V
    2A 100 10 90 ...

Moldel Line

Series: LTC3872 (18)

Manufacturer's Classification

  • Power Management > Switching Regulator > SEPIC Regulators
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

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