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NCP1571 Datasheet

  • NCP1571

  • Low Voltage Synchronous Buck Controller

  • 16頁

  • ONSEMI

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NCP1571
Low Voltage Synchronous
Buck Controller
The NCP1571 is a low voltage buck controller. It provides the
control for a DC鈭扗C power solution producing an output voltage as
low as 0.980 V over a wide current range. The NCP1571鈭抌ased
solution is powered from 12 V with the output derived from a 2鈭? V
supply. It contains all required circuitry for a synchronous NFET buck
regulator using the V
2
t
control method to achieve the fastest possible
transient response and best overall regulation. NCP1571 operates at a
fixed internal 200 kHz frequency and is packaged in an SOIC鈭?.
This device provides undervoltage lockout protection, Soft鈭扴tart,
Power Good with delay, and built鈭抜n adaptive non鈭抩verlap. During
undervoltage lockout, the NCP1571 controller allows the power
supply output to drift down, allowing the load time to shut off. This
operation distinguishes the NCP1571 from other parts in its family.
Features
http://onsemi.com
MARKING
DIAGRAM
8
8
1
SOIC鈭?
D SUFFIX
CASE 751
1
A
L
Y
W
= Assembly Location
= Wafer Lot
= Year
= Work Week
1571
ALYW
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Pb鈭扚ree Package is Available
0.980 V
鹵
1.0% Reference Voltage
V
2
Control Topology
200 ns Transient Response
Programmable Soft鈭扴tart
Power Good
Programmable Power Good Delay
40 ns Gate Rise and Fall Times (3.3 nF Load)
Adaptive FET Non鈭扥verlap Time
Fixed 200 kHz Oscillator Frequency
Undervoltage Lockout Holds Both Gate Outputs Low
On/Off Control Through Use of the COMP Pin
Overvoltage Protection through Synchronous MOSFETs
Synchronous N鈭扖hannel Buck Design
Dual Supply, 12 V Control, 2鈭? V Power Source
PIN CONNECTIONS
V
CC
PWRGD
PGDELAY
COMP
1
8
GND
V
FB
GATE(L)
GATE(H)
ORDERING INFORMATION
Device
NCP1571D
NCP1571DR2
NCP1571DR2G
Package
SOIC鈭?
SOIC鈭?
SOIC鈭?
(Pb鈭扚ree)
Shipping
鈥?/div>
98 Units/Rail
2500 Tape & Reel
2500 Tape & Reel
鈥燜or information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
漏
Semiconductor Components Industries, LLC, 2004
1
October, 2004 鈭?Rev. 4
Publication Order Number
NCP1571/D

NCP1571相關(guān)型號PDF文件下載

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    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
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    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
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    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
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  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON...
  • 英文版
    Self-Supplied Monolithic Switcher for Low Standby- Power Off...
    ONSEMI [ON Semi...

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