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NCP3065

Features: •Integrated 1.5 A Switch•Input Voltage Range from 3.0 V to 40 V•Low Feedback Voltage of 235 mV•Cycle-by-Cycle Current Limit•No Control Loop Compensation Required•Frequency of Operation Adjustable up to 250 kHz•Operation with All Ceramic Output Ca...

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SeekIC No. : 004433000 Detail

NCP3065: Features: •Integrated 1.5 A Switch•Input Voltage Range from 3.0 V to 40 V•Low Feedback Voltage of 235 mV•Cycle-by-Cycle Current Limit•No Control Loop Compensation Requi...

NCP3065 Data Sheet

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Part Number:
NCP3065
Supply Ability:
5000

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Upload time: 2024/11/24

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Product Details

Description



Features:

•Integrated 1.5 A Switch
•Input Voltage Range from 3.0 V to 40 V
•Low Feedback Voltage of 235 mV
•Cycle-by-Cycle Current Limit
•No Control Loop Compensation Required
•Frequency of Operation Adjustable up to 250 kHz
•Operation with All Ceramic Output Capacitors or No Output Capacitance
•Analog and Digital PWM Dimming Capability
•Internal Thermal Shutdown with Hysteresis
•Automotive Version Available


Application

•Automotive and Marine Lighting
•High Power LED Driver
•Constant Current Source
•Low Voltage LED Lighting
  (Landscape, Path, Solar, MR16 Replacement)


Pinout

Connection Diagram


Specifications

Rating

 Symbol Value Unit
VCC (Pin 6) VCC 0 to +40 V
Comparator Inverting Input (Pin 5 VCII -0.2 to +VCC V
Darlington Switch Collector (Pin 1) VSWC 0 to +40 V
Darlington Switch Emitter (Pin 2) (Transistor OFF) VSWE -0.6 to +VCC V
Darlington Switch Collector to Emitter (Pins 1-2) VSWCE 0 to +40 V
Darlington Switch Current ISW 1.5 A
Ipk Sense (Pin 7) VIPK -0.2 to VCC + 0.2 V
Timing Capacitor (Pin 3) VTCAP -0.2 to VCC + 0.2 V



Description

The NCP3065 is a monolithic switching regulator designed to deliver constant current for powering high brightness LEDs. The device has a very low feedback voltage of 235 mV (nominal) which is used to regulate the average current of the LED string. In addition, the NCP3065 has a wide input voltage up to 40 V to allow it to operate from 12 Vac or 12 Vdc supplies commonly used for lighting applications as well as unregulated supplies such as Lead Acid batteries. The NCP3065 can be configured in a controller topology with the addition of an external transistor to support higher LED currents beyond the 1.5 A rated switch current of the internal transistor. The NCP3065 switching regulator can be configured in Step-Down (Buck) and Step-Up (boost) topologies with a minimum number of external components.




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