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NCV890131MWTXG Datasheet(PDF) 1 Page - ON Semiconductor |
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NCV890131MWTXG Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 19 page © Semiconductor Components Industries, LLC, 2015 February, 2015 − Rev. 3 1 Publication Order Number: NCV890131/D NCV890131 1.2 A, 2 MHz Automotive Buck Switching Regulator The NCV890131 is a fixed−frequency, monolithic, Buck switching regulator intended for Automotive, battery−connected applications that must operate with up to a 36 V input supply. The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV890131 is capable of converting the typical 4.5 V to 18 V automotive input voltage range to outputs as low as 3.3 V at a constant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. Two pins are provided to synchronize switching to a clock, or to another NCV890131. The NCV890131 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 • Internal N−Channel Power Switch • Low VIN Operation Down to 4.5 V • High VIN Operation to 36 V • Withstands Load Dump to 45 V • 2 MHz Free−running Switching Frequency • Auto−synchronizes with Other NCV890131 or to an External Clock • Logic level Enable Input Can be Directly Tied to Battery • 1.4 A (min) Cycle−by−Cycle Peak Current Limit • Short Circuit Protection enhanced by Frequency Foldback • ±1.75% Output Voltage Tolerance • Output Voltage Adjustable Down to 0.8 V • 1.4 Millisecond Internal Soft−Start • Thermal Shutdown (TSD) • Low Shutdown Current • Wettable Flanks − DFN • NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable • These Devices are Pb−Free and are RoHS Compliant Applications • Audio • Infotainment • Safety − Vision Systems • Instrumentation VIN DRV SYNCO GND EN SW BST SYNCI FB COMP VIN SYNC OUT EN VOUT CIN CBST DBST DFW RCOMP CCOMP COUT L1 CDRV NCV890131 RFB2 RFB1 SYNC IN 1 2 3 4 56 7 8 9 10 Figure 1. Typical Application DFN10 CASE 485C MARKING DIAGRAM A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Device (Note: Microdot may be in either location) V8901 31 ALYW G G See detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet. ORDERING INFORMATION www.onsemi.com |
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