NCV8925 Datasheet, PDF (1/14 Pages) ON Semiconductor – Step-down Switching Regulator

NCV8925
3 MHz, 600 mA Step-Down
DC-DC Converter
High-Efficiency, Low Ripple, Adjustable
Output Voltage
The NCV8925 DC-DC buck converter is available in a space saving
low profile TSOP-5 and mUDFN6 package. The part can supply output
voltages from 0.9 V to 3.3 V by an external resistor divider and is able
to deliver output currents up to 600 mA. This switching regulator
operates at 3.0 MHz and automatically switches between PFM and
PWM modes to improve system efficiency.
Soft-start, cycle-by-cycle current limiting and thermal shutdown
protection are also integrated in NCV8925.
The device is optimized for automotive applications and bring a high
frequency DC-DC solution for automotive requirements.
Features
•ăUp to 93% Efficiency
•ăAllow Use of Small External Components
•ăSource up to 600 mA
•ă3 MHz Switching Frequency
•ăAdjustable Output Voltage from 0.9 V to 3.3 V
•ăSynchronous Rectification for Higher Efficiency
•ă2.7 V to 5.5 V Input Voltage Range
•ăLow Quiescent Current
•ăShutdown Current Consumption of 0.3 mA
•ăThermal Limit Protection
•ăShort Circuit Protection
•ăAll Pins are Fully ESD Protected
•ăThese are Pb-Free Devices
•ăNCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
http://onsemi.com
UDFN6
MU SUFFIX
CASE 517AB
MARKING
DIAGRAMS
1
6
2 ^ZEG 5
3 G4
5
1
TSOP-5
SN SUFFIX
CASE 483
5
ACNAYWG
G
1
ZE,ACN= Specific Device Code
A
= Assembly Location
Y
= Year
W
= Work Week
G
= Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package
Shipping^†
NCV8925MUTBG UDFN6 3000/Tape & Reel
(Pb-Free)
NCV8925SNT1G
TSOP-5 3000/Tape & Reel
(Pb-Free)
†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.
VIN
CIN
OFF ON
1 VIN LX 5
2 GND
3 EN
FB 4
L
COUT
VOUT
R1
R2
Figure 1. Typical Application - TSOP-5
OFF ON
Cff
1 EN FB 6
2 GND LX 5
3 VIN GND 4
R2
L R1
Cff
VOUT
COUT
CIN
VIN
Figure 2. Typical Application - UDFN6
©Ă Semiconductor Components Industries, LLC, 2008
1
April, 2008 - Rev. 0
Publication Order Number:
NCV8925/D