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ManufacturerLinear Technology
SeriesLT3796-1

100V Constant-Current and Constant-Voltage Controller with Dual Current Sense

Datasheets

  • Download » Datasheet PDF, 522 Kb, File uploaded: Sep 19, 2017
    LT3796: 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense Data Sheet
    Docket ↓
    LT3796/LT3796-1
    100V Constant-Current and
    Constant-Voltage Controller
    with Dual Current Sense
    Description Features n n n n n n n n n n n n n n n n 3000:1 True Color PWM™ Dimming
    Wide Input Voltage Range: 6V to 100V
    Current Monitoring Up to 100V
    High Side PMOS Disconnect and PWM Switch Driver
    Constant-Current and Constant-Voltage Regulation
    Dual Current Sense Amplifiers with Reporting
    C/10 Detection for Battery and SuperCap Charging
    Linear Current Sense Threshold Programming
    Short-Circuit Protection
    Adjustable Frequency: 100kHz to 1MHz
    Frequency Synchronization (LT3796)
    Independent Top Gate Enable Pin (LT3796-1)
    Programmable Open LED Protection with VMODE Flag
    Programmable Undervoltage Lockout with Hysteresis
    Soft-Start with Programmable Fault Restart Timer
    Available in 28-Lead TSSOP Package The LT®3796/LT3796-1 are DC/DC controllers designed to
    regulate a constant-current or constant-voltage and are
    ideal for driving LEDs. The fixed frequency and current
    mode architecture result in stable operation over a wide ...

Prices

Packaging

Parametrics

LT3796EFE-1#PBFLT3796EFE-1#TRPBFLT3796HFE-1#PBFLT3796HFE-1#TRPBFLT3796IFE-1#PBFLT3796IFE-1#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1706ADC1706ADC1706ADC1706ADC1706ADC1706A
Design ToolsLTspice FileLTspice FileLTspice FileLTspice FileLTspice FileLTspice File
Dimming3000:1 PWM3000:1 PWM3000:1 PWM3000:1 PWM3000:1 PWM3000:1 PWM
Export Controlnononononono
FeaturesOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External SynchronizationOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External SynchronizationOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External SynchronizationOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External SynchronizationOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External SynchronizationOutput Current Regulation, True Color PWM Dimming, Resistor Set Frequency, External Synchronization
Frequency, kHz100010001000100010001000
Ishutdown, µA111111
Isupply, mA2.52.52.52.52.52.5
Max Number of LEDs25+25+25+25+25+25+
Monolithicnononononono
Number of Outputs111111
Operating Temperature Range, °C0 to 850 to 85-40 to 125-40 to 125-40 to 85-40 to 85
Output Current, A101010101010
Switch Current, A252525252525
Synchronousnononononono
TopologyBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED DriverBuck, Boost, Buck-Boost, Sepic, LED Driver
Vin Max, V100100100100100100
Vin Min, V666666
Vout Max, V100100100100100100

Eco Plan

Other Options

LT3796 LT3796

Articles

  • Download » Articles - LT Journal PDF, 3.1 Mb, File published: Jul 20, 2012
    Combined Voltage and Current Control Loops Simplify LED Drivers, High Capacity Battery/Supercap Chargers & MPPT* Solar Applications
    Docket ↓
    July 2012 I N T H I S I S S U E pushbutton controller 10 15V, 2.5A monolithic buckboost with 95% efficiency
    and low noise 17 easy 2-supply current
    sharing 20 Volume 22 Number 2 Combined Voltage and Current
    Control Loops Simplify LED Drivers,
    High Capacity Battery/Supercap
    Chargers & MPPT* Solar Applications
    Xin (Shin) Qi
    * Maximum Power Point Tracking sub-1mm height 24V, 15A
    monolithic regulator 26 deliver 25A at 12V from
    inputs to 60V 28 The rapid expansion of constant-current/constant-voltage (CC-CV)
    applications, especially in LED lighting and high capacity battery
    and supercapacitor chargers challenges power supply designers to
    keep pace with the increasingly complicated interplay of current and
    voltage control loops. A switch-mode converter designed specifically
    for CC-CV offers a clear advantage,
    especially when the supply has limited
    power, or its power is allocated
    among several competing loads. The LTC4155 is a monolithic switching battery charger that efficiently delivers
    3.5A charge current in a compact PCB footprint. See page 13.
    Caption w w w. li n ea r.com Consider, for instance, the challenge of charging a
    supercapacitor in a minimum amount of time from
    a power-limited supply. To maintain constant input
    power, the controlled charging current must decrease ...
  • Download » Articles - LT Journal PDF, 216 Kb, File published: Jan 6, 2014
    LED Controller with Dual Current Regulation Loops Detects Faulty LEDs, Provides 100:1 Analog Dimming
    Docket ↓
    design features LED Controller with Dual Current Regulation Loops Detects
    Faulty LEDs, Provides 100:1 Analog Dimming
    Xin (Shin) Qi The LT3796-1 is a switching controller designed to
    regulate a constant current or constant voltage at the
    output—necessary requirements for driving LEDs. It uniquely
    features two independent current sense amplifiers, and its
    high side PMOS disconnect switch driver, which can be
    operated either in combination with the switching regulator
    using the PWM pin or independently using the TGEN pin.
    These features allow the LT3796-1
    to satisfy the needs of some specific
    LED applications. For instance, in high
    reliability lighting, the controller can be
    configured to drive two LED strings in
    parallel so that it is possible to detect a
    single faulty LED in either string using the
    other as a reference. Or, for applications VIN
    8V TO 20V requiring accurate analog dimming,
    the two current sense amplifiers can be
    scaled to regulate the LED current at two
    ranges, high and low, thereby extending the analog dimming capability of a
    high power LED driver to 100:1, a tenfold
    improvement over what is typically available using a single current control loop. ...

Moldel Line

Series: LT3796-1 (6)

Manufacturer's Classification

  • Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers
  • Power Management > LED Driver ICs > Step-Up (Boost) LED Drivers | Step-Down (Buck) LED Drivers | Buck-Boost LED Drivers | Multitopology LED Driver
  • Power Management > Supercapacitor Chargers
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators | Extended Temperature (H & MP) LED Drivers

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