NCP1523_07 Datasheet, PDF (1/16 Pages) ON Semiconductor – 3 MHz, 600 mA, High−Efficiency, Adjustable Output Voltage Step−down Converter

NCP1523
3 MHz, 600 mA,
High−Efficiency, Adjustable
Output Voltage Step−down
Converter
The NCP1523 step−down PWM DC−DC converter is optimized for
portable applications powered from 1−cell Li−ion or 3 cell
Alkaline/NiCd/NiMH batteries. The device is available in an
adjustable output voltage from 0.9 V to 3.3 V. It uses synchronous
rectification to increase efficiency and reduce external part count. The
device also has a built−in 3 MHz (nominal) oscillator which reduces
component size by allowing use of a small inductor and capacitors.
NCP1523 is available in automatic switching PWM/PFM
(NCP1523FCT2G) improving system efficiency and in PWM mode
only (NCP1523BFCT2G) offering a very efficient load transient
solution.
Additional features include integrated soft−start, cycle−by−cycle
current limiting and thermal shutdown protection. The NCP1523 is
available in a space saving, 8 pin chip scale package.
Features
• Sources up to 600 mA
• 3 MHz Switching Frequency
• Up to 93% Efficiency
• Synchronous rectification for higher efficiency
• Thermal limit protection
• Shutdown current consumption of 0.3 mA
• These are Pb−Free Devices
Special Features for NCP1523FCT2G
• Auto PFM/PWM mode solution
• High efficiency at light load
Special Features for NCP1523BFCT2G
• Load Transient Highly Efficient Solution
• Very small Output Voltage Ripple
• Adjustable Output Voltage from 0.9 V to 3.3 V
Typical Applications
• Cellular Phones, Smart Phones and PDAs
• Digital Still Cameras
• MP3 Players and Portable Audio Systems
• Wireless and DSL Modems
• Portable Equipment
http://onsemi.com
A1
FLIP−CHIP−8
CASE 766AE
MARKING
DIAGRAM
NCPxxxxG
AYWW
A1
NCPxxxx =
A
=
Y
=
WW
=
G
=
Device Code
xxxx = 1523 or 523B
Assembly Location
Year
Work Week
Pb−Free Package
PIN CONNECTIONS
A1
A2
B1
B2
C1
C2
D1
D2
Top View
(Bumps Below)
PIN: A1 − GND
A2 − V_IN
B1 − SW
B2 − EN
C1 − GND
C2 − ADJ
D1 − V_OUT
D2 − FB
ORDERING INFORMATION
Device
Package
Shipping^†
NCP1523FCT2G FLIP−CHIP−8
3000 /
(NCP1523)
(Pb−Free) Tape & Reel
NCP1523BFCT2G FLIP−CHIP−8
3000 /
(NCP1523B)
(Pb−Free) Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2007
1
February, 2007 − Rev. 2
Publication Order Number:
NCP1523/D