NCV890200 Datasheet, PDF (1/18 Pages) ON Semiconductor – 2 A, 2 MHz Automotive Buck Switching Regulator

NCV890200
2 A, 2 MHz Automotive
Buck Switching Regulator
The NCV890200 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
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requirements often encountered in automotive driver information
systems. The NCV890200 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
NCV890200
NCV890200 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
1
SOIC−8 EP
CASE 751AC
ALYWX
G
1
inductor values and an all−ceramic output filter capacitor − forming a
space−efficient switching regulator solution.
A
= Assembly Location
L
= Wafer Lot
Y
= Year
Features
• Internal N−Channel Power Switch
W
= Work Week
G
= Pb−Free Device
• Low V_IN Operation Down to 4.5 V
• High V_IN Operation to 36 V
• Withstands Load Dump to 40 V
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 17 of this data sheet.
• 2 MHz Free−running Switching Frequency
• 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
• These Devices are Pb−Free 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 − Vision Systems
Requirements; AEC−Q100 Qualified and PPAP
Capable
• Instrumentation
VIN
CIN
EN
CDRV
NCV890200
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 − Rev. 2
Publication Order Number:
NCV890200/D