Product Overview

Product Overview
NCV890230: Automotive Buck Switching Regulator, 2 A, 2 MHz , 45 V Load
Dump
For complete documentation, see the data sheet
Product Description
The NCV890230 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 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,
eliminating the need for costly filters and EMI countermeasures. The 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 inductor values and an all-ceramic output filter
capacitor - forming a space-efficient switching regulator solution.
Features
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Benefits
2 MHz Free-running Switching Frequency
Internal N-Channel Power Switch
Low VIN Operation Down to 4.5 V
High VIN Operation to 32 V
Withstands Load Dump to 45 V
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
For more features, see the data sheet
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Applications
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Enables to use small size, low cost inductor and EMC filter
Fewer external components
Maintains operation during battery transients
Maintains operation during battery transients
Protects the load from load dump
Flexible enable
Protects against over current faults
Protects against short circuits on the output
Highly accurate regulation.
Suitable for a wide range of applications
End Products
Audio
Infotainment
Safety - Vision Systems
Instrumentation
• Automotive
Part Electrical Specifications
Product
Compliance
Status
Topology
Control
Mode
VCC Min
(V)
VCC Max
(V)
VO Typ (V) IO Typ (A)
NCV890230PDR2G
AEC
Qualified
Active
StepDown
Current
Mode
4.5
45
Adjustable
PPAP
Capable
Pb-free
For more information please contact your local sales support at www.onsemi.com
Created on: 6/30/2016
2
Efficiency
(%)
fSW Typ
(kHz)
Package
Type
2250
SOIC-8
EP