Datasheet TB67S531FTG (Toshiba) - 5
| Manufacturer | Toshiba |
| Description | BiCD Constant-Current Two-Phase Bipolar Stepping Motor Driver IC in 32-VQFN (5x5) package |
| Pages / Page | 38 / 5 — 5. Pin Description 5.1. Pin Function Description TB67S531FTG. Table 5.1 … |
| File Format / Size | PDF / 3.0 Mb |
| Document Language | English |
5. Pin Description 5.1. Pin Function Description TB67S531FTG. Table 5.1 Pin Function Description. Pin. Pin name. Function. number
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TB67S531FTG
5. Pin Description 5.1. Pin Function Description TB67S531FTG Table 5.1 Pin Function Description Pin Pin name Function number
1 VM VM voltage input pin 2 OUTA1 Motor A ch output pin 3 RSGND_A Motor A ch GND pin 4 OUTA2 Motor A ch output pin 5 OUTB2 Motor B ch output pin 6 RSGND_B Motor B ch GND pin 7 OUTB1 Motor B ch output pin 8 VM VM voltage input pin 9 NC Non connection 10 VREFA A ch output current threshold reference pin 11 VREFB B ch output current threshold reference pin 12 AGND GND pin 13 NC Non connection 14 SLEEP_X SLEEP signal input pin 15 LO1 Reset signal output pin at error detection 16 LO2 Reset signal output pin at error detection 17 DECAY1 Constant-current chopping control change pin 18 DECAY2 Constant-current chopping control change pin 19 PHASE_A Control signal input pin for Ach motor output 20 IN_A1 Control signal input pin for Ach motor output 21 IN_A2 Control signal input pin for Ach motor output 22 NC Non connection 23 TRQ Torque change pin 24 PHASE_B Control signal input pin for Bch motor output 25 NC Non connection 26 IN_B1 Control signal input pin for Bch motor output 27 IN_B2 Control signal input pin for Bch motor output 28 OSCM Resistor connection pin for OSCM setting 29 NC Non connection 30 PGND Motor output GND pin 31 NC Non connection 32 NC Non connection Note: NC pins should be set open. ©2026 5 2026-04-07 Toshiba Electronic Devices & Storage Corporation Rev. 1.0.A Document Outline 1. Description 2. Features 3. Block Diagram 4. Pin Assignments 5. Pin Description 5.1. Pin Function Description TB67S531FTG 5.2. Input and Output Equivalent Circuit 6. Functional Description: TB67S531FTG 6.1. SLEEP_X function 6.2. Phase input control mode 6.2.1. Functions of IN_A1, IN_A2, IN_B1, IN_B2, PHASE_A, PHASE_B 6.2.2. Sequence by each drive mode in phase input control mode 6.2.2.1. Full-step resolution 6.2.2.2. Half-step resolution 6.2.2.3. Quarter-step resolution 6.3. Torque function 6.4. Selectable Mixed Decay Function 6.4.1. Mixed Decay Waveform (Current Waveform) 6.4.2. Each Time of Constant Current PWM Operation 6.4.3. Mixed Decay Current Waveform 6.4.3.1. When the set current value is increased 6.4.3.2. When the Charge period is more than 1 fCHOP cycle 6.4.3.3. When the set current value is decreased 6.5. ADMD (Advanced Dynamic Mixed Decay) Constant Current Control 6.6. ADMD Current Waveform 6.6.1. When the next current value is increased 6.6.2. When Charge period ≥ 1 fCHOP cycle 6.6.3. When the next current value is decreased 6.6.4. Fast period > 1 fCHOP cycle (The motor current does not reach the ADMD threshold during 1 fCHOP cycle.) 6.7. LO (Error detection flag output) function 6.8. Output Transistor Function mode (Advanced Dynamic Mixed Decay) 6.9. Set current value (IOUT) 6.10. Chopping frequency (fCHOP) 6.11. Power consumption of the IC 6.11.1. Power consumption of the power transistor 6.11.2. Power consumption of logic and IM systems 6.11.3. Power consumption 6.12. Detection Function 6.12.1. Thermal shutdown detection (This function is a latch type that maintains the operation at the time of detection.) 6.12.1.1. When over temperature is detected: 6.12.2. Over-current detection (This function is a latch type that maintains the operation at the time of detection.) 6.12.2.1. When over-current is detected in the lower DMOS of H-bridge by the short-circuiting to the power supply 6.12.2.2. When over-current is detected in the upper DMOS of H-bridge by the short-circuiting to the ground: 7. Absolute Maximum Ratings (Ta = 25 C) 8. Operating Ranges (Ta = -40 to 85 C) 9. Electrical Characteristics 9.1. Electrical Characteristics 1 (Ta = 25 C, VM = 24 V, unless otherwise specified) 9.2. Electrical Characteristics 2 (Ta = 25 C, VM = 24 V, unless otherwise specified) 9.3. AC Electrical Characteristics (Ta = 25 C, VM = 24 V) 9.3.1. AC Electrical Characteristics Timing Chart 10. Application Circuit Example 11. Package Information 11.1. Package Dimensions 12. IC Usage Considerations 12.1. Notes on Handling of ICs 12.2. Points to Remember on Handling of Ics RESTRICTIONS ON PRODUCT USE
5. Pin Description 5.1. Pin Function Description TB67S531FTG Table 5.1 Pin Function Description Pin Pin name Function number
1 VM VM voltage input pin 2 OUTA1 Motor A ch output pin 3 RSGND_A Motor A ch GND pin 4 OUTA2 Motor A ch output pin 5 OUTB2 Motor B ch output pin 6 RSGND_B Motor B ch GND pin 7 OUTB1 Motor B ch output pin 8 VM VM voltage input pin 9 NC Non connection 10 VREFA A ch output current threshold reference pin 11 VREFB B ch output current threshold reference pin 12 AGND GND pin 13 NC Non connection 14 SLEEP_X SLEEP signal input pin 15 LO1 Reset signal output pin at error detection 16 LO2 Reset signal output pin at error detection 17 DECAY1 Constant-current chopping control change pin 18 DECAY2 Constant-current chopping control change pin 19 PHASE_A Control signal input pin for Ach motor output 20 IN_A1 Control signal input pin for Ach motor output 21 IN_A2 Control signal input pin for Ach motor output 22 NC Non connection 23 TRQ Torque change pin 24 PHASE_B Control signal input pin for Bch motor output 25 NC Non connection 26 IN_B1 Control signal input pin for Bch motor output 27 IN_B2 Control signal input pin for Bch motor output 28 OSCM Resistor connection pin for OSCM setting 29 NC Non connection 30 PGND Motor output GND pin 31 NC Non connection 32 NC Non connection Note: NC pins should be set open. ©2026 5 2026-04-07 Toshiba Electronic Devices & Storage Corporation Rev. 1.0.A Document Outline 1. Description 2. Features 3. Block Diagram 4. Pin Assignments 5. Pin Description 5.1. Pin Function Description TB67S531FTG 5.2. Input and Output Equivalent Circuit 6. Functional Description: TB67S531FTG 6.1. SLEEP_X function 6.2. Phase input control mode 6.2.1. Functions of IN_A1, IN_A2, IN_B1, IN_B2, PHASE_A, PHASE_B 6.2.2. Sequence by each drive mode in phase input control mode 6.2.2.1. Full-step resolution 6.2.2.2. Half-step resolution 6.2.2.3. Quarter-step resolution 6.3. Torque function 6.4. Selectable Mixed Decay Function 6.4.1. Mixed Decay Waveform (Current Waveform) 6.4.2. Each Time of Constant Current PWM Operation 6.4.3. Mixed Decay Current Waveform 6.4.3.1. When the set current value is increased 6.4.3.2. When the Charge period is more than 1 fCHOP cycle 6.4.3.3. When the set current value is decreased 6.5. ADMD (Advanced Dynamic Mixed Decay) Constant Current Control 6.6. ADMD Current Waveform 6.6.1. When the next current value is increased 6.6.2. When Charge period ≥ 1 fCHOP cycle 6.6.3. When the next current value is decreased 6.6.4. Fast period > 1 fCHOP cycle (The motor current does not reach the ADMD threshold during 1 fCHOP cycle.) 6.7. LO (Error detection flag output) function 6.8. Output Transistor Function mode (Advanced Dynamic Mixed Decay) 6.9. Set current value (IOUT) 6.10. Chopping frequency (fCHOP) 6.11. Power consumption of the IC 6.11.1. Power consumption of the power transistor 6.11.2. Power consumption of logic and IM systems 6.11.3. Power consumption 6.12. Detection Function 6.12.1. Thermal shutdown detection (This function is a latch type that maintains the operation at the time of detection.) 6.12.1.1. When over temperature is detected: 6.12.2. Over-current detection (This function is a latch type that maintains the operation at the time of detection.) 6.12.2.1. When over-current is detected in the lower DMOS of H-bridge by the short-circuiting to the power supply 6.12.2.2. When over-current is detected in the upper DMOS of H-bridge by the short-circuiting to the ground: 7. Absolute Maximum Ratings (Ta = 25 C) 8. Operating Ranges (Ta = -40 to 85 C) 9. Electrical Characteristics 9.1. Electrical Characteristics 1 (Ta = 25 C, VM = 24 V, unless otherwise specified) 9.2. Electrical Characteristics 2 (Ta = 25 C, VM = 24 V, unless otherwise specified) 9.3. AC Electrical Characteristics (Ta = 25 C, VM = 24 V) 9.3.1. AC Electrical Characteristics Timing Chart 10. Application Circuit Example 11. Package Information 11.1. Package Dimensions 12. IC Usage Considerations 12.1. Notes on Handling of ICs 12.2. Points to Remember on Handling of Ics RESTRICTIONS ON PRODUCT USE