tb6674pg TOSHIBA Semiconductor CORPORATION, tb6674pg Datasheet - Page 6

• Manufacturer Part Number: tb6674pg
• Description: Stepping Motor Driver Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Undervoltage Lockout Circuit（UVLO）
The TB6674 incorporates an under voltage lockout circuit.
Outputs are turned off (Hi-Z) under the conditions as follows;
V
V
V
The UVLO circuit has a hysteresis and the function recovers under the conditions as follows;
V
CC
S1A
S2A
CC
Vs1A, Vs1B voltage
≤ 4.0 V (Design target) or
= 4.1 V (Design target), V
≤ 2.2 V (Design target)
≤ 6.0 V (Design target) and V
Vcc voltage
UVLO internal signal
<UVLO operation>
UVLO internal signal
<UVLO operation>
6.0 V (design target only)
6.5 V (design target only)
4.1 V (design target only)
4.0 V (design target only)
Output pin
Output pin
S1A
/ V
S1B
H
L
H
L
H
H
L
L
S1B
≤ 6.0 V (Design target) or
= 6.5 V (Design target), V
Normal operation
Normal operation
6
S2A
UVLO operation
UVLO operation
= 2.3 V (Design target)
OFF （ Hi-Z ）
OFF （ Hi-Z ）
TB6674PG/FG/FAG
Ver.3
2010-07-07