UCC3808AN-1G4

UCC3808AN-1G4 Product Details

Product Parameters of UCC3808AN-1G4

•  Product Name: UCC3808AN-1G4

•  Manufacturer: Texas Instruments

•  Package: 8-DIP (0.300, 7.62mm)

•  Category: AC/DC & Isolated DC/DC Switching Regulators

•  Description: Low Power Current Mode Push-Pull PWM with Discharge Transistor, 12.5/8.3V UVLO, 0°C to 70°C

•  Operating Temperature: -55°C to 150°C

•  Output Current: 100mA

•  Switching Frequency: 1MHz

•  Input Voltage: 4.1V to 20V

•  Output Voltage: Adjustable

•  Duty Cycle: 50%

Product Introduction of UCC3808AN-1G4

The UCC3808AN-1G4 is a low power current mode push-pull PWM controller that can be used for isolated or non-isolated power converters. It features a discharge transistor that rapidly discharges the external capacitor when the UVLO (under voltage lockout) threshold is reached, ensuring a fast turn-off of the power switch. It also has a programmable soft-start function that reduces the stress on the transformer and the power switch during start-up. The UCC3808AN-1G4 operates from a wide input voltage range of 4.1V to 20V and can provide an adjustable output voltage with a 50% duty cycle. The switching frequency is fixed at 1MHz, which allows the use of small and low-cost components. The UCC3808AN-1G4 is available in an 8-DIP package and can operate from -55°C to 150°C.

Product Application Scope of UCC3808AN-1G4

The UCC3808AN-1G4 can be used for various applications that require low power, high efficiency, and high isolation, such as:

•  Telecom and datacom power supplies

•  Industrial and medical power supplies

•  Auxiliary power supplies for appliances and consumer electronics

•  Battery chargers and adapters

•  LED drivers and lighting systems

Common Questions and Answers of UCC3808AN-1G4

•  Q: What is the difference between UCC3808AN-1G4 and UCC3808-1?

•  A: The UCC3808AN-1G4 is a lead-free version of the UCC3808-1, which has the same functionality and performance. The UCC3808AN-1G4 is compliant with the RoHS (Restriction of Hazardous Substances) directive.

•  Q: What is the purpose of the discharge transistor of the UCC3808AN-1G4?

•  A: The discharge transistor of the UCC3808AN-1G4 is a feature that enhances the UVLO (under voltage lockout) function. When the input voltage falls below the UVLO threshold, the discharge transistor turns on and quickly discharges the external capacitor connected to the VDD (supply voltage) pin. This ensures that the power switch is turned off immediately and prevents any damage or malfunction caused by a prolonged low input voltage condition.