Key Specs
| Spec | Value | Condition | Source |
|---|---|---|---|
| Applications | General Purpose | Digi-Key | |
| Function | Driver - Fully Integrated, Control and Power Stage | Digi-Key | |
| Interface | Parallel | Digi-Key | |
| Motor Type AC DC | Brushed DC | Digi-Key | |
| Motor Type Stepper | - | Digi-Key | |
| Mounting Type | Surface Mount | Digi-Key | |
| Operating Temperature Range | -20°C ~ 85°C (TA) | Digi-Key | |
| Output Configuration | Half Bridge (4) | Digi-Key | |
| Output Current (Max) | 1A | Digi-Key | |
| Package Case | 24-LSSOP (0.220”, 5.60mm Width) | Digi-Key | |
| Step Resolution | - | Digi-Key | |
| Supplier Device Package | 24-SSOP | Digi-Key | |
| Technology | Power MOSFET | Digi-Key | |
| Voltage Load | 2.5V ~ 13.5V | Digi-Key | |
| Voltage Supply | 2.7V ~ 5.5V | Digi-Key |
When To Use
Use the TB6612FNG,C,8,EL when designing low to medium power brushed DC motor drivers requiring up to 1A output current with a supply voltage between 2.7V and 5.5V. It is well suited for general-purpose motor control applications with a parallel interface and half-bridge output configuration. This device is ideal for surface mount designs where a compact 24-LSSOP package is needed and operating temperatures range from -20°C to 85°C.
When Not To Use
Do not use the TB6612FNG,C,8,EL for applications requiring stepper motor control, as it does not support stepper motor drive. Avoid using it in high current applications exceeding 1A output current or supply voltages above 5.5V. For such cases, select a driver with higher current rating and wider voltage supply range. Also, it is unsuitable for applications needing advanced integrated control beyond parallel interface, such as serial communication or microstepping.
Application Notes
The TB6612FNG,C,8,EL’s half-bridge output nodes switch rapidly and therefore require minimal loop area in the PCB layout to reduce EMI and switching losses. Place the decoupling capacitor as close as possible to the VCC pin to suppress supply noise. The logic input pins are noise-sensitive and should be routed away from high-current traces or switching nodes. At maximum output current of 1A and typical operating conditions, a heatsink is generally not required due to the device’s integrated Power MOSFET technology and package thermal characteristics, but thermal considerations should be verified in the final application environment.
Gotchas
-
Mistake: Connecting the motor supply voltage above 5.5V to the logic supply pins.
Failure Mode: The device logic circuitry may be damaged or malfunction due to exceeding the maximum voltage supply rating.
Fix: Ensure the logic supply pins are powered strictly within 2.7V to 5.5V as specified, and separate the motor load voltage supply (2.5V to 13.5V) from logic supply. -
Mistake: Omitting the required decoupling capacitor near the VCC pin.
Failure Mode: The IC experiences voltage spikes and noise, causing unstable operation or potential damage.
Fix: Always place a 0.1µF ceramic capacitor as close as possible to the VCC pin to stabilize the supply voltage. -
Mistake: Using the TB6612FNG,C,8,EL to drive stepper motors or motors requiring microstepping control.
Failure Mode: The motor will not operate correctly, resulting in poor performance or no movement.
Fix: Select a dedicated stepper motor driver IC designed for stepper control applications.