BD6422EFV_12 Datasheet, PDF (1/9 Pages) Rohm – High Voltage Series Stepping Motor Drivers

Stepping Motor Driver series
High Voltage Series
Stepping Motor Drivers
BD6422EFV (PARALLEL-IN type)
BD6425, BD6423EFV (CLK-IN type)
No.12009EAT06
●Description
These products are a low power consumption PWM constant current-drive driver of bipolar stepping motor with power
supply’s rated voltage of 45V and rated output current of 1.0A, 1.5A.
●Feature
1) Power supply: one system drive (rated voltage of 45V)
2) Rated output current: 1.0A, 1.5A
3) Low ON resistance DMOS output
4) CLK-IN drive mode (BD6425/6423EFV)
5) Parallel IN drive mode (BD6422EFV)
6) PWM constant current control (other oscillation)
7) Built-in spike noise blanking function (external noise filter is unnecessary)
8) FULL STEP & HALF STEP (two kinds), applicable to QUARTER STEP
9) Current decay mode switching function (4 kinds of FAST/SLOW DECAY ratio)
10) Normal rotation & reverse rotation switching function (BD6425/6423EFV)
11) Power save function
12) Built-in logic input pull-down resistor
13) Power-on reset function(BD6425/6423EFV)
14) Thermal shutdown circuit (TSD)
15) Over current protection circuit (OCP)
16) Under voltage lock out circuit (UVLO)
17) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention)
18) Electrostatic discharge: 8kV (HBM specification)
19) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package
●Application
serial dot impact printer､sewing machine etc.
●Absolute maximum ratings(Ta=25℃)
Item
Symbol
BD6425EFV
BD6423/6422EFV
Supply voltage
Power dissipation
V_CC1,2
Pd
-0.2～+45.0
1.45^※1
4.70^※2
-0.2～+45.0
1.1^※3
4.0^※4
Input voltage for control pin
V_IN
-0.2～+5.5
-0.2～+5.5
RNF maximum voltage
Maximum output current
V_RNF
I_OUT
0.7
1.5^※5
0.7
1.0^※5
Operating temperature range
T_opr
-25～+85
-25～+85
Storage temperature range
T_stg
-55～+150
-55～+150
Junction temperature
T_jmax
+150
+150
※1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 11.6mW/℃ for operating above Ta=25℃.
※2 4-layer recommended board. Derating in done at 37.6mW/℃ for operating above Ta=25℃.
※3 70mm×70mm×1.6mm glass epoxy board. Derating in done at 8.8mW/℃ for operating above Ta=25℃.
※4 4-layer recommended board. Derating in done at 32.0mW/℃ for operating above Ta=25℃.
※5 Do not, however exceed Pd, ASO and Tjmax=150℃.
Unit
V
W
W
V
V
A/phase
℃
℃
℃
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2012.02 - Rev.A