tb62202afg TOSHIBA Semiconductor CORPORATION, tb62202afg Datasheet - Page 5

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

4. Output control circuit, current feedback circuit and current setting circuit
Note:
feedback
V
V
ISD:
TSD:
Current
Current
setting
circuit
circuit
DDR
MR
:
(C/D unit is the same as A/B unit)
: V
V
Current shutdown circuit
Thermal shutdown circuit
DD
The RESET pins is pulled down in the IC by 10-kΩ resistor.
When not using the pin, connect it to GND. Otherwise, malfunction may occur.
M
Output pin
power on Reset
power on Reset
RESET
V
V
DD
M
Output control circuit
LATCH CLEAR signal
NF
set current
reached signal
RNF
set current
monitor signal
Output stop
signal
Output control circuit
Protection circuit
CURRENT SETUP
ISD (current
shutdown)
shut down
Thermal
MICRO-STEP
circuit
circuit
V
circuit
(TSD)
circuit
V
DDR
MR
Charge start
PHASE
Micro-step current setting
Reset signal
TIMING
DECAY
MIXED
selector
LOGIC
circuit
Output RESET signal
data logic circuit
U
U
L
L
1
2
1
2
5
TIMING TABLE
MIXED DECAY
CLEAR signal
Charge
pump
signal
halt
DECAY
MODE
CR COUNTER
Charge pump
Charge pump
V
DD
circuit
circuit
COUNTER
CR
reference circuit
V
M
Chopping
DECAY
TIMING
MIXED
circuit
Power supply
output MOS
transistors
for upper
V
H
TB62202AFG
(A/B unit
Output circuit
2005-04-04
Output
circuit
Ccp A
Ccp B
Ccp C