Document
Stepping Motor Driver series
High Performance, High Reliability 36V Series Stepping Motor Drivers
BD6387xEFV Series
No.12009EAT10
●Description BD6387xEFV series are the high-grade type that provides the highest function and highest reliance in the ROHM stepping motor driver series. As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power BD63877/BD63875/BD63873EFV are CLK-IN type drivers and BD63876/BD63874/BD63872EFV are PARALLEL-IN type drivers. There are excitation modes of FULL STEP & HALF STEP (2 kinds), QUARTER STEP mode, and for current decay mode, the ratio of FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for every motor can be realized. In addition, being able to drive with one system of power supply makes contribution to the set design’s getting easy.
●Feature 1) Single power supply input (rated voltage of 36V) 2) Rated output current:(DC) 1.0A, 1.5A, 2.0A 3) Low ON resistance DMOS output 4) CLK-IN drive mode (BD63877/63875/63873EFV) 5) PARALLEL-IN drive mode (BD63876/63874/63872EFV) 6) PWM constant current control (other oscillation) 7) Built-in spike noise cancel function (external noise filter is unnecessary) 8) Full-, half (two kinds)-, quarter-step functionality 9) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio)
10) Normal rotation & reverse rotation switching function (BD63877/63875/63873EFV) 11) Power save function 12) Built-in logic input pull-down resistor 13) Power-on reset function (BD63877/63875/63873EFV) 14) Thermal shutdown circuit (TSD) 15) Over current protection circuit (OCP) 16) Under voltage lock out circuit (UVLO) 17) Over voltage lock out circuit (OVLO) 18) Ghost Supply Prevention (protects against malfunction when power supply is disconnected) 19) Electrostatic discharge: 8kV (HBM specification) 20) Adjacent pins short protection 21) Inverted mounting protection 22) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP-B28 package 23) Pin-compatible line-up (BD63877/63875/63873EFV, BD63876/63874/63872EFV)
●Application PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, sewing machine, photo printer, FAX, scanner, mini printer, toy, and robot etc.
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1/8
2012.02 - Rev.A
BD6387xEFV Series
Technical Note
●Absolute maximum ratings(Ta=25℃)
Item Symbol BD63877/63876EFV BD63875/63874EFV
Supply voltage Power dissipation
VCC1,2 Pd
-0.2~+36.0 1.45※1 4.70※2
Input voltage for control pin
VIN
-0.2~+5.5
RNF maximum voltage
VRNF
0.7
Maximum output current
IOUT
Maximum output current (PEAK)※4 IOUTPEAK
2.0※3 2.5※3
1.5※3 2.0※3
Operating temperature range
Topr
-25~+85
Storage temperature range
Tstg
-55~+150
Junction temperature
Tjmax
+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 Do not, however exceed Pd, ASO and Tjmax=150℃.
※4 Pulse width tw≦1ms, duty 20%.
BD63873/63872EFV
1.0※3 1.5※3
Unit V W W V V
A/phase A/phase
℃ ℃ ℃
●Operating conditions(Ta= -25~+85℃)
Item Symbol
Supply voltage
VCC1,2
MaximumOutput current (DC) IOUT
※5 Do not, however exceed Pd, ASO and .
BD63877/63876EFV 1.7※5
BD63875/63874EFV
19~28 1.2※5
BD63873/63872EFV 0.7※5
Unit V
A/phase
●Electrical characteristics (Unless otherwise specified Ta=25℃, VCC1,2=24V)
Limit Item Symbol
Min. Typ.
Whole
Circuit current at standby Circuit current Control input
ICCST ICC
-
1.0 2.5
H level input voltage
VINH
2.0
-
L level input voltage
VINL
-
-
H level input current L level input current Output (OUT1A, OUT1B, OUT2A, OUT2B)
IINH 35 IINL -10
50 0
Output ON resistance (BD63877/63876EFV) RON
-
0.65
Output ON resistance (BD63875/63874EFV) RON
-
1.00
Output ON resistance (BD63873/63872EFV)
Output leak current Current control
RNFXS input current RNFX input current VREF input current VREF input voltage range MTH input current MTH input voltage range Minimum on time (Blank time) BD63877EFV/63875EFV/63873EFV Comparator threshold BD63876EFV/63874EFV/63872EFV
Comparator threshold 100%
Comparator threshold 67%
RON ILEAK
IRNFS IRNF IVREF VREF IMTH VMTH tONMIN
VCTH
VCTH10
0
VCTH67
-
-2.0 -40 -2.0 0 -2.0 0 0.3
0.57
0.57
0.38
1.90 -
-0.1 -20 -0.1
-0.1
0.8
0.60
0.60
0.40
Comparator threshold 33%
VCTH33 0.18
0.20
Max.
2.5 5.0
0.8 100
-
0.85 1.30 2.47 10
3.0 3.5 1.5
0.63
0.63
0.42 0.22
Unit Conditions
mA PS=L mA PS=H, VREF=3V
V
V μA VIN=5V μA VIN=0V
Ω
IOUT=1.5A, Sum of upper and lower
Ω
IOUT=1.0A, Sum of upper and lower
Ω
IOUT=0.5A, Sum of upper and lower
μA
μA RNFXS=0V μA RNFX=0V μA VREF=0V
V μA MTH=0V
V μs C=1000pF, R=39kΩ
V VREF=3V
V VREF=3V, (I0X,I1X)=(L,L)
V
VREF=3V, (I0X,I1X)=(H,L)
V
VREF=3V.