Product Overview

Product Overview
NCV890231: Automotive Switching Regulator, Buck, 2 A, 2 MHz
For complete documentation, see the data sheet
Product Description
The NCV890231 is a fixed-frequency, monolithic, Buck switching regulator intended for Automotive, battery-connected applications
that must operate with up to a 32 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 NCV890231 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 NCV890231. The NCV890231 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
•
•
•
•
•
•
•
•
•
•
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
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
For more features, see the data sheet
•
•
•
•
•
•
•
•
•
•
Applications
•
•
•
•
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
Flexable 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
NCV890231MWTXG
AEC
Qualified
Active
Topology
Control
Mode
VCC Min
(V)
VCC Max
(V)
VO Typ (V) IO Typ (A)
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
Up to
2200
DFN-10