TB6608FNG Toshiba, TB6608FNG Datasheet - Page 19

• Manufacturer Part Number: TB6608FNG
• Description: STEPPER MOTOR DRIVE, 13V 0.8A SSOP20
• Manufacturer: Toshiba

Specifications of TB6608FNG

• No. Of Outputs: 2
• Output Current: 600mA
• Output Voltage: 15V
• Supply Voltage Range: 2.7V To 5.5V, 2.5V To 13.5V
• Driver Case Style: SSOP
• No. Of Pins: 20
• Operating Temperature Range: -20°C To +85°C
• Motor Type: Stepper
• Rohs Compliant: Yes
• Function: Driver
• Vopmax (vm*): 13.5V (15V)
• Io (lpeak): 0.6A (0.8A)
• Excitation: 1/8 step
• I/f: CLK input
• Mixed Decay Mode: no
• Package: SSOP24
• Rohs Compatible†: yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Setting the Current Decay Mode
reduction depends on the motor characteristics. If any distortion can be observed, the DCY pin should be kept Low.
Also, it should be ensured that the DCY input is set High only when the coil of a motor has an inductance of 1.5 mH
or higher where fosc is no less than 100 kHz.
Thermal Shutdown (TSD) Circuit
temperature (T
by a hysteresis of 40°C.
(, which is expressed as the number of CK cycles (an actual value may not exactly equal to the specified value).)
If no distortion can be observed in the output current waveform, the DCY pin should be kept High. The distortion
The TB6608FNG includes a thermal shutdown circuit, which turns the output transistors off when the junction
The output transistors are automatically turned on when T
* In thermal shutdown mode, the internal circuitry and outputs assume the same states as in Enable Wait mode.
Upon exit from thermal shutdown mode, they revert to those states which they assume when taken out of
Enable Wait mode.
T
ΔT
SD
SD
Input
DCY
= 160°C (design target value)
H
L
= 40°C (design target value)
j
) exceeds 160°C (typ.).
Predefined
Current
Table Fast-Decay Time Inserted During the Current Decay Period
100
100
98
92
83
71
56
38
20
98
92
83
71
56
38
20
%
0
0
2W1-2-Phase
TQ = H
Number of CK
0
0
0
0
0
0
0
0
2
2
2
2
4
4
4
0
Cycles
TQ = L
0
0
0
0
0
0
0
0
1
1
1
1
2
2
2
0
Predefined
Current
100
100
92
71
38
92
71
38
%
0
0
19
W1-2-Phase
TQ = H
j
Number of CK
cools past the shutdown threshold, which is lowered
0
0
0
0
2
4
4
0
Cycles
TQ = L
0
0
0
0
1
2
2
0
Predefined
Current
100
100
71
71
%
0
0
1-2-Phase
TQ = H
Number of CK
0
0
4
0
Cycles
TB6608FNG
TQ = L
2007-12-17
0
0
2
0