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

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.

应用功能框图

NCV8518B 应用功能框图

特性
  • 5.0 V 2% Output Voltage / 250 mA Output Current
  • Low Quiescent Current (100 µA typ) at full load
  • Micropower compatible control functions: Enable, Watchdog, Reset, Adjustable Reset Delay, Wake Up
  • Protection Features:45 V operationThermal shutdownShort ciruit
  • Enable
  • AEC Q100 Qualified
  • Pin for pin compatible with NCV8518A
优势
  • Tight Regulation Limits, Perfect for powering microprocessors.
  • Quiescent current independant from load current; ideal for systems requiring interrupts while in standby
  • MPU control - design flexibility
  • No external components required to enable protections required within any automotive applications.
  • Low sleep mode current of less than 1 µA. Save battery life.
  • Meets automotive qualification requirements.
  • Can replace NCV8518A in any new design.
应用
  • Body and Chassis Instrument and Clusters Engine Control Unit Safety Tyre Pressure Monitor
终端产品
  • Automotive
封装图纸 (2)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD WIDE BODY, EXPOSED PAD751AG (47.0kB)A
SOIC-8 EP751AC (33.6kB)B
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
Linear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and EnableNCV8518B/D (166.0kB)2
产品订购型号
产品状况Compliance具体说明封装MSL*容器预算价格 (1千个数量的单价)
NCV8518BPDR2GActiveAEC Qualified PPAP Capable Pb-freeLinear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable, 5.0 VSOIC-8 EP751AC2Tape and Reel2500$0.9066
NCV8518BPWR2GActiveAEC Qualified PPAP Capable Pb-free Halide freeLinear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable, 5.0 VSOIC-16W EP751AG1Tape and Reel1000$0.9066
订购产品技术参数
ProductOutputPolarityVO (V)IO Typ (A)VI Max (V)VDO Typ (V)Iq Typ (mA)PSRR (dB)Noise (µVrms)
NCV8518BPDR2GSinglePositive50.25450.4250.170
NCV8518BPWR2GSinglePositive50.25450.4250.170
Linear Voltage Regulator, LDO, with Watchdog, Wake Up, Reset and Enable (166.0kB) NCV8518B
SOIC-8 EP NCV8668
SOIC-16 Wide Body, Exposed Pad NCV7425
NCV8518B