onsemi UC3844BD1R2G

The Onsemi UC3844BD1R2G is a high-performance current-mode controller IC that is designed to operate in various switching power supply topologies, including flyback, forward, and boost converters. The device features an internal oscillator that operates at a fixed frequency of approximately 50kHz, which can be externally programmed using a resistor and capacitor. The device has an error amplifier that can handle both current and voltage feedback modes for control loop stability. It also has an output driver stage that is capable of providing up to 1A of peak current to drive the power MOSFET or IGBT switch in the converter. The device also features a range of protection features, including overvoltage protection, cycle-by-cycle current limiting, and thermal shutdown protection.

The UC3844BD1R2G is housed in an 8-pin SOIC package and operates from a wide input voltage range of 8V to 35V. It is suitable for use in various DC-DC converter applications, including AC-DC converters, battery chargers, LED drivers, and switch-mode power supplies. The device also has a low standby current of less than 1mA, contributing to its high efficiency and low power consumption. With its high-performance features and versatile application use, the UC3844BD1R2G is an ideal solution for various power management requirements

Clock Sync	No
Control Features	Frequency Control
Duty Cycle (Max)	48%
Frequency - Switching	Up to 500kHz
Function	Step-Up, Step-Up/Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature	0°C ~ 70°C (TA)
Output Configuration	Positive, Isolation Capable
Output Phases	1
Output Type	Transistor Driver
Package / Case	8-SOIC (0.154", 3.90mm Width)
Packaging	Cut Tape (CT)
Supplier Device Package	8-SOIC
Synchronous Rectifier	No
Topology	Boost, Flyback
Voltage - Supply (Vcc/Vdd)	10V ~ 36V