NCP1596A Datasheet, PDF (1/12 Pages) ON Semiconductor – 1.5 A, 1.5 MHz Current Mode PWM Buck Down Converter

NCP1596A
1.5 A, 1.5 MHz Current
Mode PWM Buck Down
Converter
The NCP1596A is a current mode PWM buck converter with
integrated power switch. It can provide up to 1.5 A output current with
high conversion efficiency. High frequency PWM control scheme can
provide a low output ripple noise. Thus, it allows the usage of small
size passive components to reduce the board space. In a low load
condition, the controller will automatically change to PFM mode
which provides a higher efficiency at low load. Additionally, the
device includes soft−start, thermal shutdown with hysteresis,
cycle−by−cycle current limit, and short circuit protection. This device
is available in a compact 3x3 DFN package.
Features
• High Efficiency up to 90%, 1 A @ 3.3 V, 75% @ 1.2 V
• Fully Internal Compensation
• Low Output Voltage Ripple, 20 mV Typical
• ±1.5% Reference Voltage
• High PWM Switching Frequency, 1.5 MHz
• Automatic PWM / PFM Switchover at Light Load
• Built−in 1 ms Digital Soft Start
• Cycle−by−cycle Current Limit
• Thermal Shutdown with Hysteresis
• Internal UVLO Protection
• Ext. Adjustable Output Voltage
• Low Profile and Minimum External Components
• Designed for use with Ceramic Capacitor
• Compact 3x3 DFN Package
• These are Pb−Free Devices
Typical Applications
• Hard Disk Drives
• USB Power Device
• Wireless and DSL Modems
http://onsemi.com
1
6 PIN DFN 3x3
MN SUFFIX
CASE 506AH
MARKING DIAGRAM
1 1596A
ALYW
G
1596A = Specific Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
PIN CONNECTIONS
FB
GND
LX
EN
VCC
VCCP
(Top View)
ORDERING INFORMATION
Device
NCP1596AMNTWG
Package
DFN6
(Pb−Free)
Shipping^†
3000 /
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, 2009
1
June, 2009 − Rev. 0
Publication Order Number:
NCP1596A/D