LB1838M-TLM-E

Overview

The LB1838M-TLM-E is a monolithic digital IC low-voltage, low-saturation bidirectional motor driver. It features a two-channel H-bridge configuration designed for bipolar stepper motors and DC motors in portable devices. The device operates with a minimum supply voltage of 2.5V and provides a saturation voltage of 0.40V at 400mA output current. It includes built-in through-current prevention, spark killer diodes, and thermal shutdown circuits. The component utilizes an MFP14S (225 mil) surface-mount package.

Feature Summary

• Low-saturation bidirectional motor driver architecture
• Integrated protection against through-current and thermal overload
• Built-in spark killer diodes for noise suppression
• Separate logic and motor power supply inputs

Applications

• Bipolar stepper motor control in printers
• Motor drive systems in digital cameras
• Portable electronic device actuation

Procurement Notes

Verify the ordering suffix to confirm the specific tape and reel packaging quantity and lead time requirements. Ensure the procurement source explicitly lists the MFP14S package variant. Confirm RoHS compliance status matches project specifications before finalizing orders.

Selection Notes

Select this component for applications requiring low-voltage operation and minimal heat dissipation. It is suitable for designs where separate logic and motor supplies are available. Consider the MFP14S package constraints for PCB layout. Verify that the required motor current does not exceed the continuous rating without external cooling.

Part Context

This part belongs to the LB1838 series of motor drivers originally developed by Sanyo Semiconductor, now managed by ON Semiconductor. The series focuses on low-voltage, low-saturation performance for portable electronics. The LB1838M variant specifically denotes the standard bidirectional driver configuration within this family.

Replacement Considerations

LB1838JM

FAQ

Does the LB1838M-TLM-E support PWM speed control?

Yes, the enable input allows for pulse-width modulation to control motor speed.

What is the function of the built-in spark killer diodes?

They suppress voltage spikes generated by inductive loads during switching operations.