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LM5041AMTCX/NOPB

Texas Instruments

Current Mode PWM Controller 1.5A 16-Pin TSSOP T/R

Manufacturer Part #: LM5041AMTCX/NOPB

Alternate Part #: LM5041AMTCX/NOPB


legend RoHS Compliant

Descriptions

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Subs/Alternatives

Information

The LM5041A PWM controller contains all of the features necessary to implement either current-fed or voltage-fed push-pull or bridge power converters. These “Cascaded” topologies are well suited for multiple output and higher power applications. The LM5041A’s four control outputs include: the buck stage controls (HD and LD) and the push-pull control outputs (PUSH and PULL). Push-pull outputs are driven at 50% nominal duty cycle at one half of the switching frequency of the buck stage and can be configured for either an overlap time (for current-fed applications) or a both-off time (for voltage-fed applications). Push-pull stage MOSFETs can be driven directly from the internal gate drivers while the buck stage requires an external driver such as the LM5102. The LM5041A includes a high-voltage start-up regulator that operates over a wide input range of 15V to 100V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 1 MHz and total propagation delays of less than 100ns. Additional features include: line Under-Voltage Lockout (UVLO), soft-start, an error amplifier, precision voltage reference, and thermal shutdown.

The two differences between the LM5041 and the LM5041A are: No second level current limit in the 'A' version No softstart (SS) shutdown comparator in the 'A' version.

 

Key Features

  • Internal Start-up Bias Regulator
  • Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Current Mode Control
  • Internal Error Amplifier with Reference
  • Cycle-by-cycle Over-Current Protection
  • Leading Edge Blanking
  • Programmable Push-Pull Overlap or Dead Time
  • Internal 1.5A Push-Pull Gate Drivers
  • Programmable Soft-Start
  • Programmable Oscillator with Sync Capability
  • Precision Reference
  • Thermal Shutdown
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Switching Frequency
    600 kHz
    Maximum Duty Cycle
    50 %
    Fall Time
    20 ns
    Max Processing Temp
    260
    Output Current
    1500 mA
    Operating Temperature
    -40 to 125 °C
    Lead Finish
    Matte Tin
    Mounting
    Surface Mount
    Number of PWM Outputs
    1
    Adjustable Output
    Yes
    Rise Time
    20 ns
    On/Off Pin
    Yes

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8542.39.00.00
    HTSN:
    8542.39.00.00
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101
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    USD    $1.8571

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