NCV890430 Datasheet, PDF (1/9 Pages) ON Semiconductor – Duty Cycle Step-Down Synchronous Regulator

NCV890430
Product Preview
0.6 A 2 MHz 100% Duty Cycle
Step‐Down Synchronous
Regulator for Automotive
The NCV890430 is a fixed-frequency Synchronous Buck regulator
intended for Automotive, battery-connected applications that operate
with up to a 45 V input supply. It is suitable for automotive systems
with high efficiency, low noise and Low Shutdown Current
requirements that also need to operate at low input voltage close to the
output voltage. A reset pin (with adjustable delay) simplifies
interfacing with a microcontroller. This part also features an enable
input that can either be connected to a low voltage (such as
a micro-controller output) or high voltage (such as the battery input),
and a synchronization input.
The NCV890430 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 all-ceramic input output filter capacitors −
forming a space-efficient switching regulator solution
Features
• Internal 500 mW P-channel and 250 mW N-channel Power Switches
• Capable of 100% Duty Cycle Operation
• V_IN Operating Range 3.5 V to 37 V
• Withstands Load Dump to 45 V
• 2 MHz Free-running Switching Frequency
• Low Shutdown Current < 10 mA
• High Voltage Enable Pin
• Synchronization Input Pin
• DC Output Current of at Least 0.6 A
• Fixed Output Voltage (5 V, 3.3 V, 2.5 V Versions)
• ±2% Output Voltage Accuracy
• DFN Package with Wettable Flanks
(Pin Edge Plating per JEDEC MO220)
• NCV Prefix for Automotive Requiring Site and Control Changes
• These are Pb−Free Devices
Typical Applications
• Automotive Infotainment and Instrumentation
• Automotive Body Applications
• Linear Regulator Replacement
• Rear View Camera
www.onsemi.com
1
DFN8, 3x3, 0.65P
CASE 506CS
PIN CONNECTIONS
VIN
1
8
SW
RSTB
2
7
PGND
GND
3
6
SYNC
EN
4
5
VOUT
(DFN8 Top View)
MARKING DIAGRAM
1
XXXXXX
XXXXXX
ALYWG
G
XXXXX = Specific Device Code (TBD)
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 8 of this data sheet.
This document contains information on some products that are still under development. ON
Semiconductor reserves the right to change or discontinue these products without notice.
© Semiconductor Components Industries, LLC, 2015
1
June, 2015 − Rev. P3
Publication Order Number:
NCV890430/D