ST890BD

Voltage - Supply (Vcc/Vdd):	Not Required
Base Part Number:	ST890
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Fault Protection:	Current Limiting (Adjustable), Over Temperature
Features:	--
Input Type:	Non-Inverting
Rds On (Typ):	75 mOhm
Current - Output (Max):	1.2A
Series:	--
Voltage - Load:	2.7 V ~ 5.5 V
Interface:	On/Off
Output Type:	P-Channel
Output Configuration:	High Side
Ratio - Input:Output:	1:1
Number of Outputs:	1
Switch Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tube

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Introduction to ST890BD

The ST890BD is a highly integrated Power Distribution Switch, Load Driver, and Voltage Supervisor integrated circuit from STMicroelectronics. It is designed to switch, control, and monitor the power distribution and loads of embedded systems. The ST890BD can be used for a variety of power distribution and switch management applications in embedded systems. The ST890BD integrates sophisticated protection features, such as current limit and thermal shutdown, to protect the IC and the system.

Application Fields

The ST890BD can be used in a wide range of applications such as power management, motor control and I/O expansion applications. The ST890BD can be used to control, switch and monitor the power distribution of embedded systems. It can be used in mobile phones, tablets, notebooks and other consumer products. It is also suitable for Industrial, Automotive and Medical applications.

Working Principle

The ST890BD works by performing two main functions: power distribution and load driver. The power distribution section of the ST890BD is designed to switch, control, and monitor the power distribution to the system and other devices. This section can provide up to 8 independent outputs with a maximum output current of 2.5A. The device also has an integrated voltage supervisor for monitoring system voltages.The load driver section of the ST890BD is designed to drive a variety of loads, such as motors, fans and relays. The device can provide up to 8 output control lines that can be used to turn on/off loads, increase/decrease speed, or activate other functions. The output control lines can be programmed to drive different types of loads, such as DC motors and step motors.The ST890BD can also monitor, detect, and manage a variety of conditions such as over-voltage, under-voltage, over-temperature, and under-current. When these conditions are detected, the device can activate a protection circuit, such as an over-current protection circuit, to protect the system.

Conclusion

The ST890BD is a highly integrated Power Distribution Switch, Load Driver, and Voltage Supervisor from STMicroelectronics. It is designed to switch, control, and monitor the power distribution and loads of embedded systems. The ST890BD is suitable for a wide range of power management, motor control, I/O expansion, Industrial, Automotive and Medical applications. The ST890BD integrates sophisticated protection features such as current limit and thermal shutdown for system protection.

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