TB62206FG Datasheet, PDF (7/27 Pages) Toshiba Semiconductor – BiCD PWM 2−Phase Bipolar Stepping Motor Driver

TB62206FG
Electrical Characteristics 2 (unless otherwise specified, Ta = 25°C, V_DD = 5 V, V_M = 24 V)
Characteristics
Symbol
Test
Circuit
Test Condition
V_ref input voltage
V_M = 24 V, V_DD = 5 V,
V_ref
DC _{STANDBY = H, Output on,}
PHASE = 1 kHz
V_ref input current
V_ref attenuation ratio
TSD temperature
I_ref
V_ref (GAIN)
(Note 1) T_jTSD
STANDBY = H, Output on,
DC V_M = 24 V, V_DD = 5 V,
V_ref = 3.0 V
V_M = 24 V, V_DD = 5 V,
DC _{STANDBY = H, Output on,}
V_ref = 0.0 to 4.0 V
DC V_DD = 5 V, V_M = 24 V
TSD return temperature difference
(Note 1)
∆T_jTSD
DC T_jTSD = 130 to 170°C
V_DD return voltage
V_M return voltage
V_DDR
V_MR
DC V_M = 24 V, STANDBY = H
DC V_DD = 5 V, STANDBY = H
Over current protected circuit
operation current
(Note 2)
ISD
⎯ V_DD = 5 V, V_M = 24 V
Min Typ. Max Unit
GND ⎯
4.0
V
20
35
50
µA
1/4.8 1/5.0 1/5.2 ⎯
130 ⎯ 170 °C
T_jTSD T_jTSD T_jTSD
− 50 − 35 − 20
°C
2.0 3.0 4.0
V
8.0
9.0
10
V
⎯
3.0
⎯
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 charge pump is halted, and TROTECT pin outputs V_DD voltage.
Even if the TSD circuit is activated and STANDBY goes H → L → H instantaneously, the IC is not reset
until the IC junction temperature drops −20°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, and the
ISD turns off the output.
Until the STANDBY signal goes Low to High, the overcurrent protection circuit remains activated.
During ISD, IC turns STANDBY mode and the charge pump halts.
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2005-03-02