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NCV8843 Datasheet(PDF) 1 Page - ON Semiconductor

No. de Pieza. NCV8843
Descripción  1.5 A, 340 kHz, Buck Regulator with Synchronization Capability
Descarga  15 Pages
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Fabricante  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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NCV8843 Datasheet(HTML) 1 Page - ON Semiconductor

 
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© Semiconductor Components Industries, LLC, 2006
October, 2006 − Rev. 1
1
Publication Order Number:
NCV8843/D
NCV8843
1.5 A, 340 kHz, Buck
Regulator with
Synchronization Capability
The NCV8843 is a 1.5 A buck regulator IC operating at a
fixed−frequency of 340 kHz. The device uses the V2
t control
architecture to provide unmatched transient response, the best overall
regulation and the simplest loop compensation for today’s high−speed
logic. The NCV8843 accommodates input voltages from 4.5 V to 40 V
and contains synchronization circuitry.
The on−chip NPN transistor is capable of providing a minimum of
1.5 A of output current, and is biased by an external “boost” capacitor
to ensure saturation, thus minimizing on−chip power dissipation.
Protection circuitry includes thermal shutdown, cycle−by−cycle
current limiting and frequency foldback.
Features
V2 Architecture Provides Ultra−Fast Transient Response, Improved
Regulation and Simplified Design
2.0% Error Amp Reference Voltage Tolerance
Switch Frequency Decrease of 4:1 in Short Circuit Conditions
Reduces Short Circuit Power Dissipation
BOOST Lead Allows “Bootstrapped” Operation to Maximize
Efficiency
Sync Function for Parallel Supply Operation or Noise Minimization
Shutdown Lead Provides Power−Down Option
1.0 mA Quiescent Current During Power−Down
Thermal Shutdown
Soft−Start
Internally Fused Leads in SO−16L Package
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
Pb−Free Packages are Available
MARKING
DIAGRAMS
http://onsemi.com
SO−16 WB
PW SUFFIX
CASE 751AG
1
16
NCV8843
AWLYYWWG
1
16
18−LEAD DFN
MN SUFFIX
CASE 505
1
NCV8843
AWLYYWW
G
G
1
18
18
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
E
= Automotive Grade
G or
G
= Pb−Free Package
(Note: Microdot may be in either location)
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION


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