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6-95V Wide Vin, 350mA Constant On-Time Non-Synchronous Buck Regulator


Package | PIN: DGK | 8
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $2.55
10-24 $2.29
25-99 $2.13
100-249 $1.87
250-499 $1.75
500-749 $1.49
750-999 $1.26
1000+ $1.20


  • Operating Input Voltage Range: 6 V to 95 V
  • Integrated 100-V N-Channel Buck Switch
  • Internal Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • On-Time Varies Inversely With Input Voltage
  • Operating Frequency Remains Constant With Varying Line Voltage and Load Current
  • Adjustable Output Voltage From 2.5 V
  • Highly Efficient Operation
  • Precision Internal Reference
  • Low Bias Current
  • Intelligent Current Limit
  • Thermal Shutdown
  • 8-Pin VSSOP and 8-Pin WSON Packages
  • Create a Custom Design Using the LM5008A With the WEBENCH® Power Designer

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Texas Instruments  LM5008AMMX/NOPB

The LM5008A DC/DC converter is a functional variant of the LM5008 COT Buck SwitchingRegulator. The functional differences of the LM5008A are: the minimum input operating voltage is 6V, the on-time equation is slightly different, and the requirement for a minimum load current isremoved.

The LM5008A 350-mA step-down switching regulator features all of the functions requiredto implement a low-cost and efficient buck regulator. This high-voltage converter has an integrated100-V N-channel buck switch and operates over an input voltage range of 6 V to 95 V. The device iseasy to implement and is provided in 8-pin VSSOP and the thermally enhanced 8-pin WSON packages.The converter uses PWM control scheme with an on-time inversely proportional toVIN. This feature allows the operating frequency to remain relativelyconstant. The control scheme requires no loop compensation. An intelligent current limit isimplemented with forced off-time, which is inversely proportional to VOUT.This scheme ensures short-circuit control while providing minimum foldback. Other features include:thermal shutdown, VCC undervoltage lockout, gate drive undervoltage lockout,maximum duty cycle limiter, and a pre-charge switch.