NCP1573

NCP1573 Low Voltage Synchronous Buck Controller The NCP1573 is a low voltage buck controller. It provides the control for a DC−DC power solution producing an output voltage as low as 0.980 V over a wide current range. The NCP1573−based solution is powered from 12 V with the output derived from a 2−7 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. NCP1573 operates at a fixed internal 200 kHz frequency and is packaged in an SO−8. This device provides Power Good with delay and built−in adaptive non−overlap. Features 0.980 V ± 1.0% Reference Voltage V2 Control Topology 200 ns Transient Response Power Good Programmable Power Good Delay 40 ns Gate Rise and Fall Times (3.3 nF Load) Adaptive FET Non−Overlap Time Fixed 200 kHz Oscillator Frequency On/Off Control Through Use of the COMP Pin Overvoltage Protection through Synchronous MOSFETs Synchronous N−Channel Buck Design Dual Supply, 12 V Control, 2−7 V Power Source http://onsemi.com 8 1 SO−8 D SUFFIX CASE 751 PIN CONNECTIONS AND MARKING DIAGRAM 1 VCC PWRGD PGDELAY COMP 1573 ALYW 8 GND VFB GATE(L) GATE(H) A = Assembly Location L = Wafer Lot Y = Year W = Work Week ORDERING INFORMATION Device Package Shipping NCP1573D SO−8 98 Units/Rail NCP1573DR2 SO−8 2500 Tape & Reel © Semiconductor Components Industries, LLC, 2006 1 July, 2006 − Rev. 4 Publicatio...