NCV891234: Step-Down Regulator, Dual-Mode, 2 MHz Low-IQ

The NCV891x34 is a Dual Mode regulator intended for Automotive, battery−connected applications that must operate with up to a 45 V input supply. Hybrid Low Power Mode allows the NCV891x34 to operate either as a PWM Buck Converter or as a Low Drop−Out Linear Regulator, and the NCV891x34 is suitable for systems with Low Noise and Low Quiescent Current requirements often encountered in automotive driver information systems. A reset (with fixed delay) and a fault pin (flagging low input voltage and high temperature warnings) simplify interfacing with a microcontroller. Two pins are provided to synchronize switching to a clock, or to another NCV891x34. The NCV891x34 also provides several protection features expected in automotive power supply systems such as current limit, short circuit protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small inductor values and an all−ceramic output filter capacitor – forming a space−efficient switching regulator solution.

特性
  • 40 µA Iq in Light Load Condition
  • 2.0 A Maximum Output Current in PWM Mode in NCV891234
  • Internal N−channel Power Switch
  • VIN Operating Range 3.7 V to 36 V, Withstands Load Dump to 45 V
  • Logic Level Enable Pin can be Tied to Battery
  • Fixed Output Voltage of 5.0 V or 3.3 V with ±2% Accuracy
  • 2 MHz Free−running Switching Frequency
  • Input and Output Synchronization Pins
  • NCV Prefix for Automotive Requiring Site and Control Changes
  • Wettable Flanks DFN (pin edge plating)
  • These Devices are Pb−Free and are RoHS Compliant
应用
  • Safety−Vision Systems
  • Audio, Infotainment
  • Instrumentation
  • Telematics
终端产品
  • Automotive
数据表 (1)
Document TitleDocument ID/SizeRevisionRevision Date
2 MHz Low-Iq Dual-Mode Step-Down Regulator for AutomotiveNCV891334/D (138kB)0Jun, 2016
评估板文档 (9)
Document TitleDocument ID/SizeRevisionRevision Date
NCV891234, NCV891334 Evaluation Board User's ManualEVBUM2492/D (582kB)0Nov, 2016
NCV891234MW33GEVB Bill of Materials (ROHS Compliant)NCV891234MW33GEVB_BOM_ROHS (26kB)0
NCV891234MW33GEVB Gerber Layout Files (Zip Format)NCV891234MW33GEVB_GERBER (105kB)0
NCV891234MW33GEVB_BOMNCV891234MW33GEVB_BOM (118kB)0Sep, 2016
NCV891234MW33GEVB_SCHEMATICNCV891234MW33GEVB_Schematic (87kB)1
NCV891234MW50GEVB Bill of Materials (ROHS Compliant)NCV891234MW50GEVB_BOM_ROHS (26kB)0
NCV891234MW50GEVB Gerber Layout Files (Zip Format)NCV891234MW50GEVB_GERBER (105kB)0
NCV891234MW50GEVB_BOMNCV891234MW50GEVB_BOM (119kB)0Sep, 2016
NCV891234MW50GEVB_SCHEMATICNCV891234MW50GEVB_Schematic (87kB)1
封装图纸 (1)
Document TitleDocument ID/SizeRevision
DFN12, 4x4, 0.65P506CE (56.4kB)O
评估板与开发工具
产品状况Compliance简短说明
NCV891234MW33GEVBActivePb-freeStep-Down Regulator, Dual-Mode Evaluation Board
NCV891234MW50GEVBActivePb-freeStep-Down Regulator, Dual-Mode Evaluation Board
产品订购型号
产品状况Compliance封装MSL*容器预算价格 (1千个数量的单价)
NCV891234MW33R2GActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-12506CE1Tape and Reel3000$2.4999
NCV891234MW50R2GActiveAEC Qualified PPAP Capable Pb-free Halide freeDFN-12506CE1Tape and Reel3000$2.4999
订购产品技术参数
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCV891234MW33R2GStep-DownCurrent Mode3.7453.322000
NCV891234MW50R2GStep-DownCurrent Mode3.745522000
2 MHz Low-Iq Dual-Mode Step-Down Regulator for Automotive (138kB) NCV891334
NCV891334MW50GEVB
NCV891234MW33GEVB
NCV891234MW33GEVB
NCV891234MW33GEVB_BOM NCV891234
NCV891234MW33GEVB
NCV891234MW50GEVB
NCV891234MW50GEVB
NCV891234MW50GEVB_BOM NCV891234
NCV891234MW50GEVB
DFN12, 4x4, 0.65P NCV891334