NCV894630 Datasheet, PDF (1/9 Pages) ON Semiconductor – High Efficiency Low Voltage Step-Down Converter

NCV894630
2 A - 2.1 MHz High
Efficiency Low Voltage
Step-Down Converter
The NCV894630 step−down dc−dc converter is a monolithic
integrated circuit dedicated to automotive driver information systems
from a downstream voltage rail. The output voltage is externally
adjustable from 0.9 V to 3.3 V and can source up to 2 A. The converter
is running at a 2.1 MHz switching frequency, above the sensitive AM
band. The NCV894630 provides additional features expected in
automotive power systems such as integrated soft−start, hiccup mode
current limit and thermal shutdown protection. The device can also be
synchronized to an external clock signal in the range of 2.1 MHz. The
NCV894630 is available in the same 3x3 mm 10−pin DFN package as
the dual NCV896530, with compatible pin−out.
Features
• Synchronous Rectification for Higher Efficiency
• 2.1 MHz Switching Frequency
• Sources up to 2 A
• Adjustable Output Voltage from 0.9 V to 3.3 V
• 2.7 V to 5.5 V Input Voltage Range
• Thermal Limit and Short Circuit Protection
• Auto Synchronizes with an External Clock
• Wettable Flanks − DFN
• Negative Current Limit for Low Side MOSFET to Prevent Inductor
Current Recirculating
• 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
Typical Applications
• Audio
• Infotainment
• Safety − Vision System
• Instrumentation
www.onsemi.com
MARKING
DIAGRAM
DFN10
CASE 485C
NCV89
4630
. ^{. ALYW}
NCV89
4630 = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
FB 1
EN 2
SYNC 3
VIN 4
SW 5
10 ^GND
9 NC
8 POR
7 ^GND
6 ^NC
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCV894630MWTXG DFN10 3000/Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2015
1
September, 2015 − Rev. 1
Publication Order Number:
NCV894630/D