tb62202afg TOSHIBA Semiconductor CORPORATION, tb62202afg Datasheet - Page 17

• Manufacturer Part Number: tb62202afg
• Description: Dual-stepping Motor Driver Ic For Oa Equipment Using Pwm Chopper Type
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Electrical Characteristics 2
(Unless otherwise specified, Ta = 25°C, V
V
V
V
TSD temperature
TSD return temperature difference
V
V
Over current protected circuit
operation current
Note 1: Thermal shut down (TSD) circuit
Note 2: Overcurrent protection circuit
ref
ref
ref
DD
M
return voltage
input voltage
input current
attenuation ratio
return voltage
When the IC junction temperature reaches the specified value and the TSD circuit is activated, the internal
reset circuit is activated switching the outputs of both motors to off.
When the temperature is set between 130 (min) to 170°C (max), the TSD circuit operates. When the TSD
circuit is activated, the function data latched at that time are cleared. Output is halted until the reset is
released. While the TSD circuit is in operation, the charge pump is halted.
Even if the TSD circuit is activated and RESET goes H → L → H instantaneously, the IC is not reset until
the IC junction temperature drops 35°C (typ.) below the TSD operating temperature (hysteresis function).
When current exceeding the specified value flows to the output, the internal reset circuit is activated
switching the outputs of both shafts to off.
When the ISD circuit is activated, the function data latched at that time are cleared.
Until the RESET signal is input, the overcurrent protection circuit remains activated.
During ISD, the charge pump halts.
For failsafe operation, be sure to add a fuse to the power supply.
Characteristics
T
V
j
TSD (Note
ref
(Note 2)
¨T
Symbol
V
V
V
I
I
DDR
(GAIN)
1)
j
SD
ref
MR
TSD
ref
Circuit
Test
DD
10
10
11
11
12
13
14
6
= 5 V, V
17
V
V
V
V
V
V
T
V
STROBE = H
V
STROBE = H
V
fchop = 100 kHz set
RESET = H, Output on
RESET = H, Output off
RESET = H, Output on,
j
M
M
ref
M
ref
DD
M
DD
DD
TSD = 130 to 170°C
= 24 V, V
= 24 V, V
= 24 V, V
= 24 V, RESET = H,
= 3.0 V
= 2.0 to V
= 5 V, V
= 5 V, RESET = H,
= 5V, V
M
Test Condition
= 24 V)
M
M
DD
DD
DD
DD
= 24V,
= 24 V
= 5 V,
= 5 V,
= 5 V,
− 1.0 V
1/4.8
Min
130
2.0
2.0
2.0


0
T
1/5.0
Typ.
− 35
j
2.6
TSD





TB62202AFG
2005-04-04
1/5.2
V
Max
100
170
4.0
4.0


DD
Unit
µ A
°C
°C

V
V
V
A