NCV890104 Datasheet, PDF (1/19 Pages) ON Semiconductor – Adjustable Front End Overvoltage Protection Controller

NCV890104
1.2 A, 2 MHz Automotive
Buck Switching Regulator
with Programmable Spread
Spectrum and Adjustable
RSTB
www.onsemi.com
The NCV890104 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 NCV890104 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 NCV890104 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.
MARKING DIAGRAM
1
DFN12
CASE 506CE
V8901
04
ALYWG
G
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Device
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
Features
• Internal N−Channel Power Switch
• Low V_IN Operation Down to 4.5 V
• High V_IN Operation to 36 V
• Withstands Load Dump to 40 V
• 2 MHz Free−running Switching Frequency
• Adjustable Spread Spectrum
• 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 RoHS Compliant
Applications
• Audio
• Infotainment
• Safety − Vision Systems
• Instrumentation
© Semiconductor Components Industries, LLC, 2015
1
November, 2015 − Rev. 3
Publication Order Number:
NCV890104/D