|
NCP1597_13 Datasheet, PDF (1/13 Pages) ON Semiconductor – Synchronous Buck Regulator | |||
|
NCP1597A
1 MHz, 2.0 A Synchronous
Buck Regulator
The NCP1597A family are fixed 1 MHz, highâoutputâcurrent,
synchronous PWM converters that integrate a lowâresistance,
highâside Pâchannel MOSFET and a lowâside Nâchannel MOSFET.
The NCP1597A utilizes current mode control to provide fast transient
response and excellent loop stability. It regulates input voltages from
4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to
supply up to 2.0 A.
The NCP1597A includes an internally fixed switching frequency
(FSW), and an internal softâstart to limit inrush currents. Using the EN
pin, shutdown supply current is reduced to 3 mA maximum.
Other features include cycleâbyâcycle current limiting,
shortâcircuit protection, power saving mode and thermal shutdown.
Features
⢠Input Voltage Range: from 4.0 V to 5.5 V
⢠Internal 140 mW HighâSide Switching PâChannel MOSFET and
90 mW LowâSide NâChannel MOSFET
⢠Fixed 1 MHz Switching Frequency
⢠CycleâbyâCycle Current Limiting
⢠Overtemperature Protection
⢠Internal SoftâStart
⢠Startâup with PreâBiased Output Load
⢠Adjustable Output Voltage Down to 0.8 V
⢠Power Saving Mode During Light Load
⢠These are PbâFree Devices
Applications
⢠DSP Power
⢠Hard Disk Drivers
⢠Computer Peripherals
⢠Home Audio
⢠SetâTop Boxes
⢠Networking Equipment
⢠LCD TV
⢠Wireless and DSL/Cable Modem
⢠USB Power Devices
http://onsemi.com
1
DFN6
CASE 506AH
MARKING
DIAGRAM
1 1597A
AYWWG
G
A
= Assembly Location
Y
= Year
WW = Work Week
G
= PbâFree Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
FB 1
GND 2
LX 3
6 EN
5 VCC
4 VCCP
ORDERING INFORMATION
Device
Package
Shippingâ
NCP1597AMNTWG DFN6
3000 / Tape &
(PbâFree)
Reel
â 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, 2013
1
April, 2013 â Rev. 3
Publication Order Number:
NCP1597/D
|
▷ |