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NCV8842

ON Semiconductor
Part Number NCV8842
Manufacturer ON Semiconductor
Description Buck Regulator
Published Jan 16, 2007
Detailed Description NCV8842 1.5 A, 170 kHz, Buck Regulator with Synchronization Capability The NCV8842 is a 1.5 A buck regulator IC operati...
Datasheet PDF File NCV8842 PDF File

NCV8842
NCV8842

Overview
NCV8842 1.
5 A, 170 kHz, Buck Regulator with Synchronization Capability The NCV8842 is a 1.
5 A buck regulator IC operating at a fixed−frequency of 170 kHz.
The device uses the V2t control architecture to provide unmatched transient response, the best overall regulation and the simplest loop compensation for today’s high−speed logic.
The NCV8842 accommodates input voltages from 4.
0 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 • Wide Operating Range: 4 V to 40 V • 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 • Exposed Pad Packages for Enhanced Thermal Characteristics • NCV Prefix for Automotive and Other Applications Requiring Site and Change Controls • These are Pb−Free Devices http://onsemi.
com MARKING DIAGRAMS 16 16 1 SO−16W EP PW SUFFIX CASE 751AG NCV8842 AWLYYWWG 1 1 1 18 18 18−LEAD DFN MN SUFFIX CASE 505 NCV8842 AWLYYWW G G 8 1 SOIC−8 D SUFFIX CASE 751 8 V8842 ALYWE G 1 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week E = Automotive Grade G or G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 13 of this data sheet.
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