NCV8518B: Linear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable

Description: The NCV8518B device is a precision micropower volt...
  • The NCV8518B device is a precision micropower voltage regulator. It has a fixed output voltage of 5.0 V and regulates within ±2%.

    Microprocessor control logic includes an active RESET (with DELAY), wakeup, watchdog and enable.
    The NCV8518B Wakeup function brings the microprocessor out of Sleep mode. The microprocessor in turn signals its Wakeup status back to the NCV8518B by issuing a Watchdog signal.
    The active RESET circuit operates correctly at an output voltage as low as 1.0 V. The RESET function is activated during the power up sequence, during normal operation if the output voltage drops below the regulation limits or if the regulator does not receive a Watchdog signal within a Wakeup period.
    The Watchdog logic function monitors an input signal (WDI) from the microprocessor. The device responds to the falling edge of the Watchdog signal which it expects at least once during each Wakeup period.
    Enable is a standard TTL and CMOS logic compatible input that can be used to turn the regulator on or off. In the disabled/shutdown state, the pass transistor is off and total quiescent current is less than 1 µA.

    Also encompassed in this device are safety features such as thermal shutdown and short circuit protection, an important consideration in automotive environments.

    NCV8518B is pin for pin compatible with NCV8518A and can replace this device in any new design.
  • Features
  • 5.0 V 2% Output Voltage / 250 mA Output Current - Tight Regulation Limits, Perfect for powering microprocessors.
  • Low Quiescent Current (100 µA typ) at full load - Quiescent current independant from load current; ideal for systems requiring interrupts while in standby
  • Micropower compatible control functions: Enable, Watchdog, Reset, Adjustable Reset Delay, Wake Up - MPU control - design flexibility
  • Protection Features:
    45 V operation
    Thermal shutdown
    Short ciruit - No external components required to enable protections required within any automotive applications.
  • Enable - Low sleep mode current of less than 1 µA. Save battery life.
  • AEC Q100 Qualified - Meets automotive qualification requirements.
  • Pin for pin compatible with NCV8518A - Can replace NCV8518A in any new design.
  • Applications
  • Body and Chassis
  • Instrument and Clusters
  • Engine Control Unit
  • Safety
  • Tyre Pressure Monitor
  • End Products
  • Automotive
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
  • Status: Active
  • Compliance: AEC Qualified PPAP Capable Pb-free 
  • Description: Linear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable, 5.0 V
  • Package Type: SOIC-8 EP
  • Package Case Outline: 751AC
  • MSL: 2
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):17 to 20
  • Arrow:0
  • Avnet:>1K
  • Digikey:>1K
  • Newark:>1K
  • NCV8518BPWR2G
  • Status: Active
  • Compliance: AEC Qualified PPAP Capable Pb-free Halide free 
  • Description: Linear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable, 5.0 V
  • Package Type: SOIC-16 WB EP
  • Package Case Outline: 751AG
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 1000
  • Inventory

  • Market Leadtime (weeks):17 to 20
  • Arrow:0
  • Digikey:<1K
  • Packages
  • Output: Single 
  • Polarity: Positive 
  • VO (V):
  • IO Typ (A): 0.25 
  • VI Min (V):
  • VI Max (V): 45 
  • VDO Typ (V): 0.425 
  • Iq Typ (mA): 0.1 
  • PSRR (dB): 70 
  • Noise (µVrms):
  • Enable: Yes 
  • PowerGood: No 
  • Package Type: SOIC-8 EP  SOIC-16 WB EP 
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