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NCP1571DR2ONN/a2500avaiLow Voltage Synchronous Buck Controller


NCP1571DR2 ,Low Voltage Synchronous Buck ControllerELECTRICAL CHARACTERISTICS (0°C < T < 125°C, 11.4 V < V < 12.6 V, C = C = 3.3 nF,J CC GATE(H) GAT ..
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NCP1573D ,Buck ControllerELECTRICAL CHARACTERISTICS (0°C < T < 125°C, 11.4 V < V < 12.6 V, C = C = 3.3 nF,J CC GATE(H) GAT ..
NCP1575D ,Low Voltage Synchronous Buck ControllerFeaturesPIN CONNECTIONS• Pb−Free Packages are Available• 0.980 V ±1.0% Reference Voltage182V GND• V ..
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NCP1571DR2
Low Voltage Synchronous Buck Controller
NCP1571
Low Voltage Synchronous
Buck Controller
The NCP1571 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 NCP1571−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. NCP1571 operates at a
fixed internal 200 kHz frequency and is packaged in an SOIC−8.
This device provides undervoltage lockout protection, Soft−Start,
Power Good with delay, and built−in adaptive non−overlap. 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
Pb−Free Package is Available 0.980 V ± 1.0% Reference VoltageV2 Control Topology 200 ns Transient Response Programmable Soft−Start 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 Undervoltage Lockout Holds Both Gate Outputs Low 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
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