NCV890101 Series

Automotive Switching Regulator, Buck, 1.2 A, 2 MHz

Catalog

Automotive Switching Regulator, Buck, 1.2 A, 2 MHz

Part	Voltage - Input (Max) [Max]	Function	Current - Output	Output Type	Grade	Mounting Type	Qualification	Output Configuration	Frequency - Switching	Voltage - Output (Max) [Max]	Topology	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - Input (Min) [Min]	Package / Case	Synchronous Rectifier	Number of Outputs
ON Semiconductor NCV890101MWTXG	36 V	Step-Down	1.2 A	Adjustable	Automotive	Surface Mount	AEC-Q100	Positive	2 MHz	34 V	Buck	0.8 V	150 °C	-40 °C	10-DFN (3x3)	4.5 V	10-VFDFN Exposed Pad		1

Catalog

Automotive Switching Regulator, Buck, 1.2 A, 2 MHz

Key Features

• Internal N-Channel Power Switch

• Low VINOperation Down to 4.5 V

• High VINOperation to 36 V

• Withstands Load Dump to 40 V

• 2 MHz Free-running Switching Frequency

• Auto-synchronizes with Other NCV890101 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 ms Internal Soft-Start

• Thermal Shutdown (TSD)

• Low Shutdown Current

• NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls

• Wettable Flanks DFN

• This is a Pb-Free Device

Description

The NCV890101 is a fixed-frequency, monolithic, Buck switching regulator intended for Automotive, battery-connected applications that must operate with up to a 36V input supply. The regulator is suitable for systems with low noise and small form factor requirements often encountered in automotive driver information systems. The NCV890101 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 NCV890101. The NCV890101 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.