Toshiba TC78S122F Stepping Motor Drivers
Toshiba TC78S122F Dual-Stepping Motor Drivers feature a two-in-one chip that delivers a two-channel drive function, capable of running two stepping motors independently in a high-voltage, low-power MOS process. The TC78S122F also provides an interface for driving brushed DC motors. This enables the use of stepping motors and brushed DC motors together in six combinations. These include two 1.5A stepping motors, one 1.5A stepping motor with two 2.0A brushed DC motors, or four 2.0A brushed DC motors. The channels can also be paralleled to double the power handling.
With its built-in sleep function, this product can stop the regulator circuit for the IC internal logic at stand-by, allowing it to consume microamps of standby power. Toshiba TC78S122F Dual-Stepping Motor Drivers include thermal shutdown and overcurrent shutdown circuits.
Features
- Single-chip motor driver for bipolar stepping motor control
- Monolithic IC structured by CD process
- Low 0.6Ω ON-resistance
- In large mode, ON-resistance of combined H-bridges is: Ron = 0.3Ω
- Overcurrent detection (ISD), thermal shutdown (TSD), VM power-on reset
- External power supply (5V) is not required
- Maximum output withstand voltage: 40V (max)
- Output current: 2.0A (max) in DC Motor (S) mode; 1.5A (max) in Stepping Motor (S) mode
- Chopping frequency can be set by an external capacitor and resistor. High-speed chopping is possible at 100 kHz or higher.
- Packages
- TC78S122FNG: 12.5mm x 8.1mm x 1.2mm HTSSOP-48
- TC78S122FTG: 7.0mm x 7.0mm x 0.9mm QFN-48
Applications
- Surveillance cameras
- ATMs
- Office automation
- Factory automation
- Home appliances
Datasheets
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