TC78H660FTG,EL

Overview

The TC78H660FTG,EL is a dual H-bridge motor driver IC manufactured by Toshiba Semiconductor and Storage. It utilizes DMOS technology to drive two brushed DC motors or one stepper motor. The device operates within a supply voltage range of 2.5V to 16V and supports a maximum output current of 2A per channel. It features an integrated PWM constant current control architecture with low on-resistance MOSFETs. Key electrical parameters include a typical high-side plus low-side on-resistance of 0.48Ω and a standby current of 0.1μA or less. The component is housed in a compact 16-pin WQFN (3x3mm) package with an exposed thermal pad.

Feature Summary

• Integrates dual H-bridge circuits with built-in PWM constant current control for precise motor regulation without external sampling resistors.
• Includes comprehensive error detection mechanisms such as thermal shutdown, over-current protection, and under-voltage lockout with dedicated status output pins.
• Features ultra-low standby power consumption suitable for battery-operated portable devices.
• Supports forward, reverse, stop, and brake modes via simple digital input interfaces.

Applications

• Battery-powered mobile robots and toy vehicles
• Household appliances including refrigerators, robotic vacuums, and electric curtains
• Precision transmission mechanisms in medical equipment
• Positioning systems for automated instrumentation

Procurement Notes

Verify the specific suffix EL against the manufacturer's official datasheet to confirm packaging and tape-and-reel specifications. Ensure that the ordering information matches the exact part number TC78H660FTG,EL to avoid discrepancies in pin configuration or thermal characteristics. Cross-reference the RoHS compliance status and moisture sensitivity level with the latest production documentation before finalizing procurement orders.

Selection Notes

Select this component for applications requiring compact form factors and efficient power management in small-to-medium brushed DC motor systems. The integrated thermal and current protection reduces the need for external safety circuitry. Consider the 3x3mm WQFN package constraints for PCB layout and thermal dissipation requirements when designing for continuous high-current operation.

Part Context

This device belongs to the TC78H6 series of brushed motor driver ICs from Toshiba. These silicon monolithic drivers are designed for low-profile applications incorporating DMOS output transistors. The series provides a unified solution for driving multiple DC motors or stepping motors while maintaining high efficiency and reliability in consumer and industrial electronics.

Replacement Considerations

Consult official Toshiba substitution guides for verified alternatives within the TC78H6 family. Ensure any replacement maintains compatibility with the 2.5V to 16V supply range and 2A output capability. Verify package footprint and pinout alignment to prevent redesign efforts.

FAQ

How does the TC78H660FTG,EL manage heat during operation?

The IC incorporates a thermal shutdown circuit that activates when the junction temperature exceeds safe limits. Additionally, the 16-pin WQFN package includes an exposed thermal pad designed to dissipate heat effectively through the PCB copper layers.

What is the purpose of the error detection output function?

The error detection output function signals peripheral modules when internal faults occur, such as thermal shutdown or over-current conditions. This allows the system controller to quickly respond to failures and protect the motor and driver hardware.