The UC3874N-1G4 is a synchronous step-down (buck) DC-DC controller designed for high efficiency power conversion with an input voltage range of 4.5V to 36V. It features fixed frequency average current mode control, enabling tight regulation of output voltage and superior transient response. The controller can drive external N-channel MOSFETs, which enhances efficiency by replacing the catch diode typically found in standard buck converters. This device includes a programmable standby mode that significantly reduces quiescent current consumption at light loads, improving overall efficiency. It also supports virtual 100% duty cycle operation and has built-in protection against reverse current in the inductor. The UC3874N-1G4 is suitable for battery-powered applications, including laptops and consumer electronics, where performance and battery life are critical. The part is available in an 18-pin PDIP package and is compliant with RoHS standards.
Buck Regulator Positive Output Step-Down DC-DC Controller IC 18-PDIP
IC REG CTRLR BUCK 18DIP
| Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | UC3874N-1G4 | UC3874N-1G4 |
| Product Name | DC DC Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers |
| Output Voltage Type | Fixed; Transistor Driver | |
| Package Type | DIP; Other; 18-DIP (0.300\", 7.62mm) | |
| Life Cycle Stage | Removed; Obsolete | |
| VIN | 9 to 36 volts |
