TB6613FTG Toshiba, TB6613FTG Datasheet - Page 9

• Manufacturer Part Number: TB6613FTG
• Manufacturer: Toshiba

Specifications of TB6613FTG

• Function: Driver
• Vopmax (vm*): 5.5V (6V)
• Io (lpeak): 0.6A (0.8A)
• Channel: 8-ch
• I/f: serial input
• Option: 6bit u-Step STM drive x2
• Package: VQON44
• Rohs Compatible†: yes

•
Constant-current setting:
Current Decay Mode: Only Applicable for Step-Down Control in STM µStep Mode
specified by Vref depending on the time constant of a motor coil, thus leading to a big distortion from the desired
output current waveform.
Fast-Decay mode very briefly immediately after each Vref step-down. In this mode, the output current
recirculates back to the power supply.
listed below:
In STM µStep mode, the output current step-down slope may not match the changes of the target current level
To improve the matching between the output current and the target current level, the TB6613FTG enters
The Fast-Decay time is generated by counting the internal clock signal and selectable from the four modes
Fast-Decay Mode
Fast0
Fast1
Fast2
Fast3
Number of Internal Clock Cycle
The maximum Vref voltage can be selected from 0.3 V, 0.225 V, 0.15 V and 0.075
V with a 2-bit DAC based on the 0.3-V on-chip reference voltage.
This DAC output is divided by the 6-bit DAC under control of the microstep
decoder to establish Vref for constant-current control.
0
1
2
3
9
Decay Rate
Medium
Small
Large
No
TB6613FTG
2008-06-27