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NCV78M00

NCV890103 Evaluation Board User'sManual

ON Semiconductor 

NCV890103GEVB

NCV890103 Evaluation

Board User's Manual

Description

The NCV890103 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 NCV890103 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. A Reset pin signals when the output is in

regulation, and a pin is provided to adjust the delay before

the RSTB signal goes high. The NCV890103 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.

http://onsemi.com

EVAL BOARD USER’S MANUAL

Key Features

• Internal N-channel Power Switch

• Low VIN Operation Down to 4.5 V

• High VIN Operation to 36 V

• Withstands Load Dump to 40 V

• 2 MHz Free-running Switching Frequency

• Reset with Adjustable Delay

• 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

• NCV Prefix for Automotive and Other Applications

Requiring Unique Site and Control Change

Requirements; AEC−Q100 Qualified and PPAP

Capable

• Wettable Flanks DFN (Pin Edge Plating)

• These Devices are Pb-Free and are RoHS Compliant

Typical Applications

• Audio, Infotainment, Safety – Vision Systems,

Instrumentation

Figure 1. NCV890103 Evaluation Board

© Semiconductor Components Industries, LLC, 2014

1

April, 2014 − Rev. 0

Publication Order Number:

EVBUM2235/D

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