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NCP1570 Datasheet(PDF) 1 Page - ON Semiconductor

No. de Pieza. NCP1570
Descripción  Low Voltage Synchronous Buck Controller
Descarga  14 Pages
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Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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NCP1570 Datasheet(HTML) 1 Page - ON Semiconductor

 
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© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 5
1
Publication Order Number
NCP1570/D
NCP1570
Low Voltage Synchronous
Buck Controller
The NCP1570 is a low voltage buck controller. It provides the
control for a DC−DC power solution producing an output voltage as
low as 0.985 V over a wide current range. The NCP1570−based
solution is powered from 12 V with the output derived from a 5 V
supply. It contains all required circuitry for a synchronous NFET buck
regulator using the V2™ control method to achieve the fastest possible
transient response and best overall regulation. The NCP1570 operates
at a fixed internal 200 kHz frequency and is packaged in an SO−8.
The NCP1570 provides undervoltage lockout protection, Soft Start,
Power Good with delay, and built−in adaptive non−overlap.
Features
0.985 V ± 1.0% Reference
V2 Control Topology
200 ns Transient Response
Programmable Soft Start
Power Good
Programmable Power Good Delay
40 ns Gate Rise and Fall Times (3.3 nF Load)
50 ns Adaptive FET Non−Overlap Time
Fixed 200 kHz Oscillator Frequency
Undervoltage Lockout
On/Off Control Through Use of the COMP Pin
Overvoltage Protection through Synchronous MOSFETs
Synchronous N−Channel Buck Design
Dual Supply, 12 V Control, 5 V Power Source
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
NCP1570D
SO−8
98 Units/Rail
NCP1570DR2
SO−8
2500 Tape & Reel
SO−8
D SUFFIX
CASE 751
A
= Assembly Location
WL, L
= Wafer Lot
YY, Y
= Year
WW, W = Work Week
GATE(H)
COMP
1
8
GATE(L)
PGDELAY
VFB
PWRGD
GND
VCC
PIN CONNECTIONS AND
MARKING DIAGRAM
1
8


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