98 ICs
■Electrical Characteristics (VCC = 5V, VS = 24V, Ta = 25°C, unless otherwise specified)
■Absolute Maximum Ratings
Unit
V
V
V
A
V
V
V
W
W
°C
°C
°C
Symbol
VM
VS
VCC
IO
VIN
VREF
VRS
PD1
PD2
Tj
Ta
Tstg
Parameter
Motor Supply Voltage
Load Supply Voltage
Logic Supply Voltage
Output Current
Logic Input Voltage
REF Input Voltage
Sense Voltage
Power Dissipation
Junction Temperature
Operating Ambient Temperature
Storage Temperature
(Ta=25°C)
Ratings
SLA7050M SLA7051M SLA7052M
46
46
6
123
–0.3 to VCC+0.3
–0.3 to VCC+0.3
–2 to +2
4 (Without Heatsink)
20 (TC=25°C)
+150
–20 to +85
–30 to +150
Unit
mA
µ
A
mA
V
Ω
V
kHz
V
µ
A
V
µ
A
V
µ
S
µ
S
µ
S
µ
S
Parameter
Main Supply Current
Logic Supply Current
Output MOSFET Breakdown
Voltage
Output MOSFET ON Resistance
Output MOSFET Diode Forward
Voltage
Maximum Clock Frequency
Logic Input Voltage
Logic Input Current
REF Input Voltage
REF Input Current
Sense Voltage
PWM OFF Time
PWM Minimum ON Time
Sleep - Enable Recovery Time
Switching Time
Symbol
ISS
Conditions
IS
Conditions
ICC
VDSS
Conditions
RDS (ON)
Conditions
VSD
Conditions
Fclock
VIL
VIH
IIL
IIH
VREF
Conditions
VREFS
Conditions
IREF
VRS
TOFF
TON (min)
TSE
Conditions
TONC
Conditions
TOFFC
Conditions
Ratings
SLA7050M SLA7051M SLA7052M
min. typ. max. min. typ. max. min. typ. max.
15 15 15
Normal operation Normal operation Normal operation
100 100 100
Sleep mode Sleep mode Sleep mode
333
100 100 100
VS=44V, IDSS=1mA VS=44V, IDSS=1mA VS=44V, IDSS=1mA
0.85 0.5 0.27
ID=1A ID=1A ID=3A
1.2 1.1 2.3
ISD=1A ISD=1A ISD=3A
100 100 100
VCC·0.25 VCC·0.25 VCC·0.25
VCC·0.75 VCC·0.75 VCC·0.75
±1±1±1
±1±1±1
01.5 0 1.5 0 1.5
Normal-operation current control Normal-operation current control Normal-operation current control
2VCC 2VCC 2VCC
Output OFF (sleep) Output OFF (sleep) Output OFF (sleep)
±10 ±10 ±10
VREF VREF VREF
12 12 12
555
100 100 100
VREF : 2.0→1.5V, IO : 0.75A VREF : 2.0→1.5V, IO : 1.5A VREF : 2.0→1.5V, IO : 2.0A
2.5 2.5 2.5
Clock→Out Clock→Out Clock→Out
2.0 2.0 2.0
Clock→Out Clock→Out Clock→Out
■Recommended Operating Conditions
2-Phase/1-2 Phase Excitation, Built-in Sequencer
SLA7050M/SLA7051M/SLA7052M
1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
Parameter
Motor Supply Voltage
Load Supply Voltage
Logic Supply Voltage
REF Input Voltage
Case Temperature
Symbol
VM
VS
VCC
VREF
TC
Unit
V
V
V
V
°C
Ratings
min. max.
44
10 44
3.0 5.5
0.1 1.0
100
Remarks
The VCC surge voltage should be 0.5V or lower.
The control current precision is degraded at 0.1V or lower.
Temperature at pin-10 Lead (Without heatsink)
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99
ICs
SLA7050M/SLA7051M/SLA7052M
Symbol Function
■Internal Block Diagram and Pin Assignment
OSC
Sequencer
OSC
PWM
Control Synchro
Control PWM
Control
Reg
Vcc
Clock
Full/Half
CW/CCW
Vs
GB
OutB/
OutB
OutA
OutA/
GA
NC SenseA
Sync
REF
GND
SenseB
MIC
GB
GB/GA/
GA
Sleep
Circuit
NC
123 4 1112 14 7 5 15 16 17 18
1310896
■Typical Connection Diagram
*VCC line noise precaution:
The device may malfunction if the VCC line noise exceeds 0.5V.
*Be sure to connect the unused logic input terminals (CW/CCW, F/H, Sync) to VCC
or GND. If they are open, the device will malfunction.
* GND pattern precaution:
Separating the VCC system GND (S-GND) and VS system GND (P-GND) from the
device GND (10-Pin) helps to reduce noise.
Clock
Full/Half
CW/CCW
SenseA
Sync
REF
GND
SenseB
Vs
GB
NC
OutB/
OutB
OutA
OutA/
GA
NC
Vs=10~44V
CA
Disable
Micro-
computer,
etc.
Vcc=3.0~5.5V
SLA7051M
SLA7050M
SLA7052M
r1
r2 RsA RsB
CB Q1
13
10
5
6
12
11
7
8
9
Vcc
11816171514432
P-GND
S-GND
* REF terminal turns into normal operation at VREF < 1.5V.
The output is disabled (Output OFF) at VREF > 2V.
Truth Table
CW/CCW
Full/Half
REF
Sync
Clock
L
CW
Full
Enable
Asynchronous
H
CCW
Half
Disable
Synchronous
■External Dimensions (ZIP18 with Fin [SLA18Pin]) (Unit : mm)
31±0.2
24.4±0.2
16.4±0.2
3.2±0.15
φ
16±0.2
13±0.2
9.9±0.2
Part Number
Lot No.
3.2±0.15×3.8
φ
4.8±0.2
1.7±0.1
2.45±0.2
R-End
6.7±0.5
9.7+1
–0.5
(3)
0.55+0.2
–0.1
4±0.7
1+0.2
–0.1
17×P1.68±0.4=28.56±1
0.65+0.2
–0.1
31.3±0.2
Forming No. No.871 Forming No. No.872
123 18 123 18
17×P1.68±0.4=28.56±1
0.65+0.2
–0.1 1+0.2
–0.1
3±0.6
0.55+0.2
–0.1
2.2±0.6
6±0.6
7.5±0.6
4.6±0.6
1.6±0.6
....... .......
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
OutA
NC
OutA/
GA
VCC
SenseA
Clock
Sync
Ref
GND
CW/CCW
Full/Half
SenseB
VS
GB
OutB/
NC
OutB
Phase A output
No Connection
Phase A output
No Connection
Logic supply
Phase A current sense
Step Clock input
Synchronous PWM control signal input
Control current setting & output OFF
Device GND
Normal/reverse control input
Full/Half Step control input
Phase B current sense
Load supply (motor supply)
No Connection
Phase B output
No Connection
Phase B output
Rs=0.1 to 2Ω (Power dissipation should be: P IO2 × RS)
R1=10kΩCA=100
µ
F/50V
R2=5.1kΩ (VR) CB=10
µ
F/10V
Q1:T.B.D
=
..
Product Mass : Approx.6g
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