TB62202AFG Datasheet, PDF (17/84 Pages) Toshiba Semiconductor – Dual-Stepping Motor Driver IC for OA Equipment Using PWM Chopper Type

TB62202AFG
Electrical Characteristics 2
(Unless otherwise specified, Ta = 25°C, V_DD = 5 V, V_M = 24 V)
Characteristics
V_ref input voltage
V_ref input current
V_ref attenuation ratio
TSD temperature
Symbol
Test
Circuit
Test Condition
V_ref
10
V_M = 24 V, V_DD = 5 V,
RESET = H, Output on
I_ref
V_ref (GAIN)
RESET = H, Output off
10 V_M = 24 V, V_DD = 5 V,
V_ref = 3.0 V
V_M = 24 V, V_DD = 5 V,
6 RESET = H, Output on,
V_ref = 2.0 to V_DD − 1.0 V
T_jTSD (Note
1)
11
V_DD = 5 V, V_M = 24 V
TSD return temperature difference
∆T_jTSD
11 T_jTSD = 130 to 170°C
V_DD return voltage
V_M return voltage
Over current protected circuit
operation current
V_DDR
V_MR
I_SD
(Note 2)
12
V_M = 24 V, RESET = H,
STROBE = H
13
V_DD = 5 V, RESET = H,
STROBE = H
14
V_DD = 5V, V_M = 24V,
fchop = 100 kHz set
Min Typ. Max Unit
2.0
⎯
V_DD
V
0
⎯
100
µA
1/4.8 1/5.0 1/5.2 ⎯
130
⎯
170
°C
⎯
T_jTSD
− 35
⎯
°C
2.0
⎯
4.0
V
2.0
⎯
4.0
V
⎯
2.6
⎯
A
Note 1: Thermal shut down (TSD) circuit
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).
Note 2: Overcurrent protection circuit
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.
17
2005-04-04