NCV890203 Buck Switching Regulator - Automotive, RESET 2.0 A, 2 MHz The NCV890203 is a fixedfrequency, monolithic, Buck switching www.onsemi.com regulator intended for Automotive, batteryconnected applications that must operate with up to a 36 V input supply. The regulator is MARKING DIAGRAM suitable for systems with low noise and small form factor requirements often encountered in automotive driver information V8902 systems. The NCV890203 is capable of converting the typical 4.5 V to 03 18 V automotive input voltage range to outputs as low as 3.3 V at DFN10 ALYW CASE 485C aconstant switching frequency above the sensitive AM band, eliminating the need for costly filters and EMI countermeasures. A = Assembly Location A Reset pin signals when the output is in regulation, and a pin is L = Wafer Lot Y = Year provided to adjust the delay before the RSTB signal goes high. W = Work Week The NCV890203 also provides several protection features expected in = PbFree Device Automotive power supply systems such as current limit, short circuit (Note: Microdot may be in either location) protection, and thermal shutdown. In addition, the high switching frequency produces low output voltage ripple even when using small ORDERING INFORMATION inductor values and an allceramic output filter capacitor forming See detailed ordering and shipping information in the package a spaceefficient switching regulator solution. dimensions section on page 17 of this data sheet. Features Internal NChannel Power Switch 1.4 Millisecond Internal SoftStart Low V Operation Down to 4.5 V Thermal Shutdown (TSD) IN High V Operation to 36 V Low Shutdown Current IN Withstands Load Dump to 40 V Wettable Flanks DFN (pin edge plating) 2 MHz Freerunning Switching Frequency NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Logic level Enable Input Can be Directly Tied to Requirements AECQ100 Qualified and PPAP Capable Battery These Devices are PbFree and are RoHS Compliant Reset with Adjustable Delay Applications 2.2 A (min) CyclebyCycle Peak Current Limit Audio Short Circuit Protection enhanced by Frequency Foldback Infotainment 1.75% Output Voltage Tolerance Safety Vision Systems Output Voltage Adjustable Down to 0.8 V Instrumentation Semiconductor Components Industries, LLC, 2014 1 Publication Order Number: August, 2019 Rev. 0 NCV890203/DNCV890203 CDRV DBST NCV890203 L1 VIN VOUT 1 VIN SW 10 CBST CIN COUT DFW 2 DRV BST 9 RFB1 RSTB DELAY 3 RSTB DELAY 8 CDELAY 4 GND FB 7 EN 56EN COMP RFB2 RCOMP CCOMP Figure 1. Typical Application CDRV DBST VIN SW VIN L1 VOUT CIN DFW 3 V COUT CBST Reg DRV Oscillator BST PWM VOUT LOGIC DELAY ON OFF RSTB RSTB CDELAY 2 A + + + Reset Delay FB GND + TSD SoftStart RESET COMP VOLTAGES MONITORS RCOMP EN Enable + CCOMP Figure 2. NCV890203 Block Diagram www.onsemi.com 2 + +