A4950KLJTR-T

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Motor Type - Stepper:	--
Motor Type - AC, DC:	Brushed DC
Function:	Driver - Fully Integrated, Control and Power Stage
Output Configuration:	Half Bridge (2)
Interface:	Analog
Technology:	DMOS
Step Resolution:	--
Applications:	Automotive
Current - Output:	3.5A
Voltage - Supply:	8 V ~ 40 V
Voltage - Load:	8 V ~ 40 V
Operating Temperature:	-40°C ~ 150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package:	8-SOIC-EP
Base Part Number:	A4950

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A4950KLJTR-T is a high-performance, integrated, extended temperature, full-bridge motor driver IC with advanced protection and control features. The device integrates two full-bridge power MOSFETs and provides up to 4 A (8 A source current) continuous source and 4 A (8 A drain current) continuous sink current. The device is designed for application such as small DC brush motors, tiny fan, screws and pumps for the temperature regulation systems. It supports a wide input voltage range of 4.5 V to 40 V.

Application Field and Working Principle

A4950KLJTR-T is a great device for powering small brushed motors, fans, pumps and other similar systems. It is designed for a wide range of applications including appliances, automation, robotics, security systems, power tools and automotive applications. The device is suitable for harsh environments as it is rated for an extended temperature range of -40 °C to +85 °C.
The A4950KLJTR-T works by connecting a supply voltage of 4.5V to 40V to the VS pin and applying logic level inputs to the inputs SENSE, SLEW, PWM, and FAULT. The inputs are then routed to the MOSFETs, which switch the power to the motor. The IC also supports a wide range of frequency control frequencies up to 250 kHz, as well as adjustable current-limit settings and protection functions.
The integrated protection includes a thermal overload protection, under-voltage lockout, cycle-by-cycle over-current shutdown, and short-circuit/over-current protection. The device is also capable of operating in either a lowside-only or full-bridge mode, making it easy to design systems to suit the application. Additionally, the device can be configured to support partial bridge or three-phase operation.
The device also includes an internal boost regulator that provides a regulated voltage supply for the IC’s internal circuitry. The IC is also capable of automatic slew-rate control for reducing the output current transition times and helps to reduce the electromagnetic interference (EMI) generated by the motor.
In conclusion, the A4950KLJTR-T is a versatile and robust integrated motor driver IC suitable for a wide range of applications. It is capable of high-performance operation, integration of a wide range of protection features, and wide operating temperature range. It is an ideal choice for powering small DC brushed motors, fans, screws and pumps in industrial, automotive, and other harsh environments.

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