LB11948T-MPB-E

Overview

The LB11948T-MPB-E is a low saturation voltage output PWM current control bipolar drive stepping motor driver manufactured by onsemi. It features a full-integrated design combining control and power stages within a single package. The device supports a supply voltage range of 3V to 15V and delivers an output current of 400mA. It utilizes a parallel interface for operation and is housed in a 30-TSSOP surface-mount package with a width of 5.60mm. The component operates within a temperature range of -20°C to 85°C (TA) and is classified as a discontinued product.

Feature Summary

• Full-integrated driver with combined control and power stages
• Low saturation voltage output for efficient performance
• Supports PWM current control for bipolar stepper motors

Applications

• General purpose bipolar stepper motor driving
• Cooling fan motor drivers

Procurement Notes

This component is officially listed as discontinued by the manufacturer. Verification of final availability through authorized distributors or secondary market sources is required before integration into new designs. Engineers should confirm the specific manufacturing lot date code against reliability data sheets, as process changes may have occurred prior to end-of-life notification. Design-in activities are not recommended due to the lack of long-term supply assurance.

Selection Notes

Select this part only for maintenance or replacement of existing equipment where the original design specified the LB11948T series. Due to its discontinued status, it is unsuitable for new product development requiring long-term supply chain stability. Evaluate alternative modern stepper motor drivers from the manufacturer's current portfolio that offer similar voltage and current specifications but include active production support and updated packaging options.

Part Context

The LB11948T belongs to onsemi's legacy standard product line focused on motor control solutions. It was designed to provide a cost-effective, integrated solution for driving bipolar stepper motors in consumer and industrial applications. The device represents an earlier generation of motor driver technology, characterized by its specific TSSOP packaging and parallel interface requirements, which distinguishes it from newer I2C or SPI-controlled alternatives.

Replacement Considerations

As the LB11948T-MPB-E is discontinued, no direct public substitute part numbers are confirmed in the provided documentation. Designers must identify functional equivalents from current product lines that match the 3V-15V supply range, 400mA output capability, and bipolar stepper motor interface requirements.