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NCV891334MW33R2G Datasheet(PDF) 1 Page - ON Semiconductor |
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NCV891334MW33R2G Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 11 page © Semiconductor Components Industries, LLC, 2016 June, 2016 − Rev. 0 1 Publication Order Number: NCV891334/D NCV891234, NCV891334 2 MHz Low-IQ Dual-Mode Step-Down Regulator for Automotive 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. Features • 40 mA Iq in Light Load Condition • 2.0 A Maximum Output Current in PWM Mode in NCV891234 • 3.0 A Maximum Output Current in PWM Mode in NCV891334 • 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 Typical Applications • Safety−Vision Systems • Audio, Infotainment • Instrumentation • Telematics MARKING DIAGRAM www.onsemi.com DFN12 MW SUFFIX CASE 506CE PIN CONNECTIONS See detailed ordering and shipping information on page 10 of this data sheet. ORDERING INFORMATION (Top View) 1 891x34XX = Specific Device Code x = 2, 3 XX = 33, 50 A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Device (Note: Microdot may be in either location) 891x34 XX ALYW G G SW BST VOUT EN SYNCI FLTB VIN VIN2 DRV SYNCO RSTB GND 1 Figure 1. Application Schematic VIN VIN2 SYNCO VOUT SW BST DRV VIN VOUT CIN CBST DBST DFW COUT L1 CDRV NCV891x34 SYNCI RESET GND FLTB SYNCI RSTB FAULT SYNCO ENABLE EN |
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