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9-75V Wide Vin, 500mA Constant On-Time Non-Synchronous Buck Regulator


Package | PIN: NGT | 8
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.76
10-24 $2.48
25-99 $2.31
100-249 $2.03
250-499 $1.90
500-749 $1.61
750-999 $1.36
1000+ $1.30


  • Versatile Synchronous Buck DC/DC Converter
    • Operating Input Voltage Range of 9 V to 75 V
    • Integrated 80-V, 0.7-A N-Channel Buck Switch
    • InternalHigh-Voltage VCC Regulator
    • Adjustable OutputVoltage
    • High EfficiencyOperation
  • Adaptive Constant On-Time Control Architecture
    • Ultra-Fast Transient Response
    • No Control Loop CompensationRequired
  • Nearly Constant Switching Frequency
    • PWM On-Time Varies Inversely with InputVoltage
  • Precision 2.5-V Reference
  • Low Input Quiescent Current
  • Inherent Protection Features for Robust Design
    • Intelligent Current Limit Protection
    • VCC and Gate DriveUVLO Protection
    • Thermal Shutdown Protection With Hysteresis
    • ExternalShutdown Control
  • 8-Pin VSSOP and WSON Packages
  • Create a Custom Regulator Design Using WEBENCH® Power Designer

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Texas Instruments  LM5007SDX/NOPB

The LM5007 0.5-A step-down switching converter features all of the functions needed toimplement a low-cost and efficient buck regulator. This high-voltage converter has an integrated80-V, 0.7-A N-channel buck switch and operates over an input voltage range of 9 V to 75 V. Thedevice is easy to implement and is provided in 8-pin VSSOP and thermally enhanced 8-pin WSONpackages.

The converter uses a hysteretic control scheme with a PWM on-time inversely proportionalto VIN. This feature allows the operating frequency to remain relativelyconstant with load and input voltage variations. The hysteretic control requires no loopcompensation and provides fast transient response. An intelligent current limit is implemented withforced off-time that is inversely proportional to VOUT. This currentlimiting scheme ensures short-circuit protection while providing reduced load current foldback.Other protection features include thermal shutdown with automatic recovery,VCC and gate drive undervoltage lockout, and maximum duty cyclelimiter.