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NCV890231

ON Semiconductor
Part Number NCV890231
Manufacturer ON Semiconductor
Description Automotive Buck Switching Regulator
Published Aug 16, 2015
Detailed Description NCV890231 Buck Switching Regulator Automotive 2.0 A, 2 MHz The NCV890231 is a fixed−frequency, monolithic, Buck switch...
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NCV890231
NCV890231


Overview
NCV890231 Buck Switching Regulator Automotive 2.
0 A, 2 MHz The NCV890231 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 NCV890231 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 NCV890231.
The NCV890231 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.
www.
onsemi.
com MARKING DIAGRAM DFN10 CASE 485C V8902 31 ALYWG G A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb−Free Device (Note: Microdot may be in either location) 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 NCV890231 or to an External Clock • Logic level Enable Input Can be Directly Tied to Battery • 2.
2 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 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 18 of this data sheet.
• Thermal Shutdown (TSD) • Low Sh...


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