UDN2982LW

The UDN2982LW is a high-current, low-side mosfet driver IC from among Power Distribution Switches, Load Drivers, PMICs (Power Management Integrated Circuits). They are available in 4-pins and 8-pins SOIC packages. It has adjustable current limit and low RDSON indicating programmable temperature sensing capability.

The UDN2982LW has a wide input voltage range from 2.7V to 36V, and provides 8A of output current for on-state applications. The device comes with an internal 500KHz oscillator and enables both PWM and linear mode operation. It also offers overload protection, under-voltage lockout, thermal shutdown and cycle-by-cycle current limiting.

In addition to their use as power switches, UDN2982LW devices can be used in LED displays and driver stages, motor control, telecom and data communication, industrial process control and other general purpose applications. The main purpose of the device is to control the flow of power in the system, and load drivers provide the interface between the controller and the load.

The basic working principle of the UDN2982LW is as follows: Once turned on, the device acts as a low RDSON switch between the supply voltage and the load. When turned off, the device shuts off the flow of power between the supply voltage and the load. The device can be operated in PWM or linear mode depending on the application.

The PWM mode provides a wide range of duty cycles and works by varying the voltage applied to the load. In linear mode, the duty cycle is fixed and the voltage is adjusted accordingly. In both modes, the current limit can be set to the desired limit based on the load requirements. The device also offers overload protection by shutting down the output if the current exceeds the programmed limit.

The UDN2982LW is an ideal device for controlling the flow of power in application where high currents are needed. Its wide voltage and current range, adjustable current limit, low RDSON and overload protection make it a great choice for applications in lighting systems, automotive, industrial, consumer and medical fields.

In conclusion, the UDN2982LW is a general purpose low-side mosfet driver IC from Power Distribution Switches, Load Drivers, PMICs. It is designed for applications where high currents are needed and offers adjustable current limit and low RDSON indicating programmable temperature sensing capability. It can be operated in either PWM or linear mode and offers overload protection by shutting down the output current if it exceeds the set limit. Overall, it is a great choice for applications in lighting systems, automotive, industrial, consumer and medical fields.