TB6608FNG Toshiba, TB6608FNG Datasheet - Page 18

• 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

3. Changing the Predefined Current to the Higher Value
In fast-decay mode, the regenerative current from a coil flows back to the power supply as shown below.
Even when the Vref voltage is increased, the regulator remains in Discharge mode for four CK cycles and
then enters Charge mode. During acceleration, the current decays only in slow-decay mode.
Internal CK
GND
OSC
Vref
Vref
Iout
OUT1
Charge
(Slow decay mode)
M
Discharge
Discharge
OUT2
V
M
18
V
RF
OUT1
Charge
Charge
(Fast decay mode)
M
Discharge
Discharge
OUT2
V
M
TB6608FNG
2007-12-17