ST2051BDR

$1.10

Description：IC PWR SWITCH N-CHANNEL 1:1 8SO
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:3f80761ce8a5 Category: Power Distribution Switches, Load Drivers Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC PWR SWITCH N-CHANNEL 1:1 8SO
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Switch Type：General Purpose
Number of Outputs：1
Ratio - Input:Output：1:01
Output Configuration：High Side
Output Type：N-Channel
Interface：On/Off
Voltage - Load：2.7V ~ 5.5V
Voltage - Supply (Vcc/Vdd)：Not Required
Current - Output (Max)：500mA
Rds On (Typ)：80mOhm
Input Type：Non-Inverting
Features：-
Fault Protection：Current Limiting (Fixed), Over Temperature, UVLO
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Supplier Device Package：8-SOIC
Package / Case：8-SOIC (0.154", 3.90mm Width)
Grade：-
Qualification：-

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ST2051BDR

Overview

The ST2051BDR is a single-channel N-channel power switch manufactured by STMicroelectronics, housed in an 8-SOIC surface-mount package. It operates with a load voltage range of 2.7V to 5.5V and supports a maximum output current of 500mA. The device features a typical on-resistance of 80 milliohms and utilizes a non-inverting input interface. Integrated fault protection mechanisms include fixed current limiting, overtemperature shutdown, and under-voltage lockout (UVLO). It functions as a high-side switch within the general-purpose category.

Feature Summary

Integrates comprehensive fault protection including fixed current limiting, thermal shutdown, and under-voltage lockout for system reliability.
Features low on-resistance characteristics to minimize conduction losses in power distribution applications.
Utilizes a simple non-inverting logic interface for straightforward control integration.

Applications

Power distribution in industrial automation systems
Load switching in automotive body electronics
Peripheral power management in consumer devices

Procurement Notes

Verify component status carefully as this part is officially obsolete and no longer manufactured. Confirm availability through authorized distributors or secondary market suppliers. Ensure replacement components meet identical electrical specifications and pin compatibility requirements before integration into existing designs.

Selection Notes

Select this component for applications requiring a single high-side switch with integrated protection in a compact SOIC package. Consider the 500mA current limit and 80mΩ on-resistance when designing load circuits. Verify that the 2.7V to 5.5V operating range aligns with the system supply voltage and logic levels.

Part Context

The ST2051 belongs to STMicroelectronics' intelligent high-side switch family designed for power management. These devices combine MOSFET technology with diagnostic and protection circuitry. The ST2051BDR specifically targets cost-sensitive applications requiring basic load switching capabilities without complex communication interfaces.