器件名称: 1N5819
功能描述: 1.5 A, 170 kHz, Buck Regulator with Synchronization Capability
文件大小: 152.38KB 共13页
简 介:NCP1546 1.5 A, 170 kHz, Buck Regulator with Synchronization Capability
The NCP1546 is a 1.5 A buck regulator IC operating at a fixedfrequency 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 highspeed logic. The NCP1546 accommodates input voltages from 4.5 V to 40 V and contains synchronization circuitry. The onchip 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 onchip power dissipation. Protection circuitry includes thermal shutdown, cyclebycycle current limiting and frequency foldback.
Features http://onsemi.com MARKING DIAGRAM
1 18 NCP1546 AWLYYWW G G 18LEAD DFN MN SUFFIX CASE 505 18
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Architecture Provides UltraFast 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 PowerDown Option 1.0 mA Quiescent Current During PowerDown Thermal Shutdown SoftStart PbFree Packages are Available
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A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week E = Automotive Grade G = PbFree Package (Note: Microdot may be in either loc……