tb62217afg TOSHIBA Semiconductor CORPORATION, tb62217afg Datasheet - Page 36

• Manufacturer Part Number: tb62217afg
• Description: Pwm Drive Stepping Motor Driver / Brush Dc Motor Driver Selectable, Dc-dc Converter And Reset Function Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Recommended Operating Conditions
VM supply voltage
Output current
DC-DC converter initial output
current
DC-DC converter output current
Logic input voltage
Clock frequency
Motor chopping frequency range
Vref reference voltage input
range
Note 1: A voltage of 7 V or higher is recommended for typical use. A VM voltage range between 6 V (POR voltage)
Note 2: When the power is turned on, soft start is put in effect by limiting the current to the DC-DC converter input
Characteristics
and 7 V inclusive allows the DC-DC converter to exhibit much the same characteristics as when VM = 7 V
(except that the voltage error becomes r10%). However, it is recommended to use the IC at 7 V or higher
(partly to allow for a margin of stability), because both the rising POR (power-on reset voltage) and falling
POR (shut-down voltage) are 6 V.
block. The limited current results in the output current being limited. If an attempt is made to turn on the
power with a load current flowing, it is likely that the DC-DC converter may fail to start or that the output
voltage may abruptly increase when the soft-start current is switched.

I
I
OLA
OSL
Symbol
I
I
I
I
fchop
I
I
DCi A
DCi B
DCi C
f
DC A
DC B
DC C
V
V
V
CLK
(Note 2)
(Note 2)

Stepper
ref
IN
M
DC
Excluding motor block
Motor block
Per phase (in single-axis drive) at Ta
25 q C
Per H-bridge with peak of 500 ns at Ta
Per H-bridge with pulse of 100 ms at
Ta
Before the ORT signal is output
Before the ORT signal is output
After the ORT signal is output
After the ORT signal is output
VM
25 q C
25 q C
(Ta
40 V
36
Test Condition
0 to 85°C)

(Note 1)
GND
Min
1.0
0.8
18









6
Typ.
100

0.6
0.8
0.8
3.3
2.0
27
27





TB62217AFG
2004-11-12
Max
100
100
600
300
1.0
6.4
2.4
5.0
3.0
40
40
25


MHz
Unit
kHz
mA
mA
mA
mA

V
A
V
V