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NCV890230 Datasheet, PDF (1/18 Pages) ON Semiconductor – 2 A, 2 MHz Automotive Buck Switching Regulator | |||
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NCV890230
2 A, 2 MHz Automotive
Buck Switching Regulator
The NCV890230 is a fixedâfrequency, monolithic, Buck switching
regulator intended for Automotive, batteryâconnected 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
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requirements often encountered in automotive driver information
systems. The NCV890230 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,
MARKING
DIAGRAM
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eliminating the need for costly filters and EMI countermeasures. The
V890230
NCV890230 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
8
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SOICâ8 EP
CASE 751AC
ALYWX
G
1
inductor values and an allâceramic output filter capacitor â forming a
spaceâefficient switching regulator solution.
A
= Assembly Location
L
= Wafer Lot
Y
= Year
Features
⢠Internal NâChannel Power Switch
W
= Work Week
G
= PbâFree Device
⢠Low VIN Operation Down to 4.5 V
⢠High VIN Operation to 36 V
⢠Withstands Load Dump to 45 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
⢠2 MHz Freeârunning Switching Frequency
⢠Logic level Enable Input Can be Directly Tied to Battery
⢠2.2 A (min) CycleâbyâCycle 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 SoftâStart
⢠These Devices are PbâFree and are RoHS Compliant
⢠Thermal Shutdown (TSD)
Applications
⢠Low Shutdown Current
⢠Audio
⢠NCV Prefix for Automotive and Other Applications
⢠Infotainment
Requiring Unique Site and Control Change
⢠Safety â Vision Systems
Requirements; AECâQ100 Qualified and PPAP
Capable
⢠Instrumentation
VIN
CIN
EN
CDRV
NCV890230
1 VIN
SW 8
2 DRV
BST 7
3 GND
FB 6
4 EN COMP 5
DBST
CBST
L1
DFW
RFB1
VOUT
COUT
RCOMP
CCOMP
RFB2
Figure 1. Typical Application
© Semiconductor Components Industries, LLC, 2014
1
October, 2014 â Rev. 2
Publication Order Number:
NCV890230/D
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