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NCV890131MWTXG Datasheet(PDF) 1 Page - ON Semiconductor

Part # NCV890131MWTXG
Description  1.2 A, 2 MHz Automotive Buck Switching Regulator
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCV890131MWTXG Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2015
February, 2015 − Rev. 3
1
Publication Order Number:
NCV890131/D
NCV890131
1.2 A, 2 MHz Automotive
Buck Switching Regulator
The NCV890131 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 NCV890131 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
NCV890131. The NCV890131 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.
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 NCV890131 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 Millisecond Internal Soft−Start
Thermal Shutdown (TSD)
Low Shutdown Current
Wettable Flanks − DFN
NCV Prefix for Automotive and Other Applications
Requiring Unique Site and Control Change
Requirements; AEC−Q100 Qualified and PPAP
Capable
These Devices are Pb−Free and are RoHS Compliant
Applications
Audio
Infotainment
Safety − Vision Systems
Instrumentation
VIN
DRV
SYNCO
GND
EN
SW
BST
SYNCI
FB
COMP
VIN
SYNC
OUT
EN
VOUT
CIN
CBST
DBST
DFW
RCOMP
CCOMP
COUT
L1
CDRV
NCV890131
RFB2
RFB1
SYNC IN
1
2
3
4
56
7
8
9
10
Figure 1. Typical Application
DFN10
CASE 485C
MARKING DIAGRAM
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Device
(Note: Microdot may be in either location)
V8901
31
ALYW
G
G
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
ORDERING INFORMATION
www.onsemi.com


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