LV8044LP-TLM-E [ONSEMI]
6-channel Motor Driver IC;
| 型号： | LV8044LP-TLM-E |
| 厂家： | 
ONSEMI |
| 描述： | 6-channel Motor Driver IC |
| 文件： | 总26页 (文件大小：377K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : ENA0438F
LV8044LP
Bi-CMOS IC
http://onsemi.com
6-channel Motor Driver IC
for Digital Still Camera
Overview
The LV8044LP is a 6-channel motor driver IC for digital still camera.
Functions
Two microstep drive H-bridge driver channels.
Two microstep drive/PWM saturated drive switchable H-bridge driver channels.
Two constant-current drive H-bridge driver channels.
Drive mode switchable between 2-phase, 1-2 phase full torque, 1-2 phase, and 4W1-2 phase (channels 1, 2, 3, and 4).
Microstep drive step advance controlled by a single step signal input (channels 1, 2, 3, and 4).
Ability to set the hold current to one of four levels (channels 1, 2, 3, and 4).
Ability to set the constant-current reference voltage to one of 16 levels from the serial data (channels 5 and 6).
Eight-bit 3-wire serial control.
Three on-chip photosensor driver circuits.
Specifications
Maximum Ratings at Ta = 25C
Parameter
Power supply voltage 1
Power supply voltage 2
Output peak current
Symbol
Conditions
Ratings
Unit
V
V
max
max
6.0
6.0
M
V
I
V
CC
peak
max
Each CH tw 10ms, duty 20%
Each CH
mA
mA
W
600
O
Output continuous current
Allowable power dissipation 2
Operating temperature
Storage temperature
I
O
400
Pd max
Topg
With substrate *
1.4
C
C
-20 to +85
-55 to +150
Tstg
*: With 40mm × 50mm × 0.8mm glass epoxy substrate (four-layer substrate).
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
ORDERING INFORMATION
See detailed ordering and shipping information on page 26 of this data sheet.
D2013HK 20130730-S00003/O1911SY/O2710SY/50710SY/
12408MS/32807MSPC/71906MSOT No.A0438-1/26
Semiconductor Components Industries, LLC, 2013
December, 2013
LV8044LP
Recommended Operating Conditions at Ta = 25C
Parameter
Power supply voltage range 1
Power supply voltage range 2
Logic input voltage range
STEP frequency
Symbol
Conditions
Ratings
Unit
V
V
2.7 to 5.5
2.7 to 5.5
M
V
V
CC
V
0 to V
CC
+0.3
V
IN
F
STEP1, STEP2
STEP3, STEP4
to 64
KHz
KHz
STEP
PWM frequency
F
to 100
PWM
Electrical Characteristics at Ta 25C, V = 5V, V
= 3.3V
CC
M
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
Standby supply current
Motor supply current
I
ST = “L”
1.0
A
A
STN
I
ST = “H”, PWM3 = PWM4 = “H”,
IN51 = IN61 = “H”, no load
50
100
M
Logic supply current
I
ST = “H”, PWM3 = PWM4 = “H”,
IN51 = IN61 = “H”, no load
2
3
4
mA
CC
V
V
low-voltage cut voltage
V
2.1
100
150
2.35
150
180
40
2.6
200
200
V
CC
th CC
Low-voltage hysteresis voltage
Thermal shutdown temperature
Thermal hysteresis width
V
HIS
mV
C
C
th
TSD
TSD
Design guarantee
Design guarantee
Microstep Driver (channels 1, 2, 3, and 4)
Output on resistance
Ronu
Rond
I
I
= 400mA, Upper ON resistance
= 400mA, Lower ON resistance
0.7
0.5
0.8
0.6
1.0
1.2
1.0
50
O
O
Output leak current
I
leak1
A
V
O
Diode forward voltage 1
Logic pin input current
V
1
ID = -400mA
0.9
33
D
I
L
V
= 0V (ST, STEP1, STEP2)
= 3.3V (ST, STEP1, STEP2)
A
A
V
in
IN
IN
I
H
h
V
20
in
Logic input “H” level voltage
Logic input “L” level voltage
V
ST, STEP1, STEP2
ST, STEP1, STEP2
2.5
in
V
l
1.0
V
in
Current
4W1-2 phase
Vstep16
Step 16
0.185
0.200
0.215
V
selection
reference
voltage level
(Initial level: the channel 1 comparator level)
Step 15 (Initial+1)
Vstep15
Vstep14
Vstep13
Vstep12
Vstep11
Vstep10
Vstep9
Vstep8
Vstep7
Vstep6
Vstep5
Vstep4
Vstep3
Vstep2
Vstep1
Vstep16
0.185
0.185
0.176
0.170
0.162
0.154
0.146
0.129
0.113
0.097
0.079
0.062
0.044
0.024
0.006
0.185
0.200
0.200
0.193
0.186
0.178
0.171
0.163
0.148
0.131
0.115
0.097
0.079
0.06
0.215
0.215
0.206
0.200
0.192
0.184
0.176
0.159
0.143
0.127
0.109
0.092
0.074
0.054
0.036
0.215
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Step 14 (Initial+2)
Step 13 (Initial+3)
Step 12 (Initial+4)
Step 11 (Initial+5)
Step 10 (Initial+6)
Step 9 (Initial+7)
Step 8 (Initial+8)
Step 7 (Initial+9)
Step 6 (Initial+10)
Step 5 (Initial+11)
Step 4 (Initial+12)
Step 3 (Initial+13)
Step 2 (Initial+14)
Step 1 (Initial+15)
0.04
0.02
1-2 phase
Step 16
0.200
(Initial level: the channel 1 comparator level)
Step 8 (Initial+1)
Vstep8
0.129
0.185
0.148
0.200
0.159
0.215
V
V
1-2 phase
Vstep16
Step 16
(Full torque)
(Initial level: the channel 1 comparator level)
Step 8 (Initial+1)
Vstep8
Vstep8
0.185
0.185
0.200
0.200
0.215
0.215
V
V
2 phase
Step 8
Continued on next page.
No.A0438-2/26
LV8044LP
Continued from preceding page.
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
156
Chopping frequency
fchop1
fchop2
104
52
130
KHz
KHz
KHz
KHz
V
65
200
78
240
fchop3
160
80
fchop4
100
120
Current setting reference voltage
VSEN00
VSEN01
VSEN10
VSEN11
(D5, D6) = (0, 0)
0.185
0.119
0.085
0.051
0.200
0.134
0.100
0.066
0.215
0.149
0.115
0.081
(D5, D6) = (0, 1)
(D5, D6) = (1, 0)
(D5, D6) = (1, 1)
V
V
V
Constant-Current Drive (channels 5 and 6)
Output on resistance
Ronu
Rond
I
I
= 400mA, Upper ON resistance
= 400mA, Lower ON resistance
0.7
0.5
0.8
0.6
1.0
1.2
1.0
50
O
O
Output leak current
I
leak
μA
V
O
Diode forward voltage 1
Logic pin input current
V
1
ID = -400mA
0.9
33
D
I
L
V
V
= 0V, (IN51, IN52, IN61, IN62)
= 3.3V, (IN51, IN52, IN61, IN62)
A
A
V
in
IN
I
H
20
in
IN
Logic input “H” level voltage
Logic input “L” level voltage
Output constant current
V
V
h
IN51, IN52, IN61, IN62
IN51, IN52, IN61, IN62
2.5
in
l
1.0
V
in
I
Rload = 3,RF = 0.5,
380
400
420
mA
OUT
Internal standard = 0.2V
(D4, D5, D6, D7) = (0, 0, 0, 0)
Current setting reference voltage
Vref0
Vref1
Vref2
Vref3
Vref4
Vref5
Vref6
Vref7
Vref8
Vref9
VrefA
VrefB
VrefC
VrefD
VrefE
VrefF
0.285
0.19
0.30
0.20
0.315
0.21
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
(D4, D5, D6, D7) = (1, 0, 0, 0)
(D4, D5, D6, D7) = (0, 1, 0, 0)
(D4, D5, D6, D7) = (1, 1, 0, 0)
(D4, D5, D6, D7) = (0, 0, 1, 0)
(D4, D5, D6, D7) = (1, 0, 1, 0)
(D4, D5, D6, D7) = (0, 1, 1, 0)
(D4, D5, D6, D7) = (1, 1, 1, 0)
(D4, D5, D6, D7) = (0, 0, 0, 1)
(D4, D5, D6, D7) = (1, 0, 0, 1)
(D4, D5, D6, D7) = (0, 1, 0, 1)
(D4, D5, D6, D7) = (1, 1, 0, 1)
(D4, D5, D6, D7) = (0, 0, 1, 1)
(D4, D5, D6, D7) = (1, 0, 1, 1)
(D4, D5, D6, D7) = (0, 1, 1, 1)
(D4, D5, D6, D7) = (1, 1, 1, 1)
0.18
0.190
0.180
0.170
0.165
0.160
0.155
0.150
0.145
0.140
0.135
0.130
0.120
0.110
0.100
0.2
0.171
0.161
0.156
0.152
0.147
0.143
0.137
0.133
0.128
0.123
0.114
0.104
0.095
0.189
0.179
0.173
0.168
0.163
0.158
0.152
0.147
0.142
0.137
0.126
0.116
0.105
Photo-sensor Drive Circuit
Output saturation voltage
Serial Data Transfer Pin
Logic pin input current
Vsat
I
= -20mA
0.09
33
0.12
V
O
I
L
V
V
= 0V (SCLK, SDATA, STB)
= 3.3V (SCLK, SDATA, STB)
1.0
50
A
A
V
in
IN
I
H
20
in
IN
Logic input “H” level voltage
Logic input “L” level voltage
Minimum SLCK “H” pulse width
Minimum SLCK “L” pulse width
V
V
h
SCLK, SDATA, STB
SCLK, SDATA, STB
2.5
in
l
1.0
V
in
Tckh
Tckl
0.125
0.125
0.125
s
s
s
Minimum setup time
Tsup1
(STB SCLK rising edge)
Minimum setup time
Tsup2
0.125
s
(SCLK rising edge STB)
Minimum STB pulse width
Tstbw
Tds
0.125
0.125
0.125
s
s
Data setup time
Data hold time
Tdh
s
Maximum SCLK frequency
Fclk
4
MHz
No.A0438-3/26
LV8044LP
Serial Input Switching Characteristics Timing Chart
Fclk
Tsup1
Tckh
Tckl
D2
SCLK
Tds Tdh
D1
D0
D6
D7
SDATA
STB
Tsup2
Tstbw
Package Dimensions
unit : mm (typ)
[LV8044LP]
TOP VIEW
5.0
SIDE VIEW
BOTTOM VIEW
0.35
40
2
1
(0.7)
0.2
SIDE VIEW
VQLP40(5.0X5.0)
Pd max -- Ta
[LV8044LP]
Specified substrate: 40×50×0.8mm3
glass epoxy four-layer board.
1.6
1.4
1.2
0.8
0.73
0.4
0
-20
0
20
40
60
8085
100
Ambient temperature, Ta -- °C
No.A0438-4/26
LV8044LP
Pin Assignment
30
29
28
27
26
25
24
23
22
21
PWM3/
STEP2
31
32
33
34
35
36
37
38
39
40
20
19
18
17
16
15
14
13
12
11
IN62
IN61
VM6
PWM4
VM34
V
SGND
PI1
CC
LV8044LP
4
STB
SDATA
SCLK
STEP1
VM12
ST
PI2
TOP VIEW
PI3/MO
VM5
IN52
IN51
1
2
3
4
5
6
7
8
9
10
The pin assignment of LV8044LP and LV8044LQ is the same.
No.A0438-5/26
LV8044LP
Block Diagram
No.A0438-6/26
LV8044LP
Pin Function
Pin No.
Pin name
Function
Equivalent circuit
13
STEP1
Channels 1/2 - STEP signal input
20
PWM3/STEP2
3ch PWM signal input
/ Channels 3/4 - STEP signal input
4ch PWM signal input
19
40
39
32
31
14
15
16
11
10
7
PWM4
IN51
Channel 5 - Logic input 1
IN52
IN61
Channel 6- Logic input 1
IN62
SCLK
SDATA
STB
Serial data transfer clock input
Serial data input
Serial data latch pulse input
Chip enable
ST
OUT1A
OUT2A
OUT3A
OUT4A
OUT5A
OUT6A
OUT1B
OUT2B
OUT3B
OUT4B
OUT5B
OUT6B
RF1
1ch
2ch
3ch
4ch
5ch
6ch
1ch
2ch
3ch
4ch
5ch
6ch
1ch
2ch
3ch
4ch
5ch
6ch
OUTA output
21
24
4
27
8
OUTB output
5
23
26
2
29
9
Current sensing resistor connection
6
RF2
22
25
3
RF3
RF4
RF5
28
12
18
38
33
RF6
VM12
VM34
VM5
Channels 1/2 - Motor power supply
Channels 3/4 - Motor power supply
Channels 5 - Motor power supply
Channels 6 - Motor power supply
Photosensor drive output
VM6
35
36
PI1
PI2
Continued on next page.
No.A0438-7/26
LV8044LP
Continued from preceding page.
Pin No.
37
Pin name
PI3/MO
Function
Equivalent circuit
Photosensor drive output 3/position detection monitor
17
1
V
Logic system power supply
CC
PGND1
PGND2
SGND
Channels 1/2/5 - Power system ground
Channels 3/4/6 - Power system ground
Signal system ground
30
34
Serial Data Input Specifications
1. Serial Data Input Setup
First set STB low and then input the SDATA and SCLK signals. The SCLK signal is not accepted when STB is high.
SDATA inputs the data in the order D0, D1, ... D6, D7.
Data is transferred on the rising edge of SCLK and after all data has been transferred, all the data is latched on the rising
edge of STB.
2. Timing with which the Serial Data Settings are Reflected in the Output
STP timing mode (applies to microstep driver settings)
Type 1: The hold, reset, and enable settings, as well as the reference voltage setting are reflected at the same time as
the STB signal data latch operation.
Type 2: The forward/reverse (FR) and the excitation setting mode (MS) setting that are set at STP setup are reflected
in the output at the next clock rising edge after data latch.
STB timing (applies to settings other than the above)
Type 1: The PWM driver, constant-current driver, PI, and other settings are reflected at the same time as the STB signal
data latch operation.
No.A0438-8/26
LV8044LP
Serial Data Truth Table
Serial Logic Table (1)
Serial data reflection
timing
Input
Set channel
Setting mode
Description
Remarks
PI
D0 D1 D2 D3 D4 D5 D6 D7
1ch 2ch 3ch 4ch 5ch 6ch
STEP1 STEP2 STB
0
1
0
1
*
0
0
1
1
*
*
*
*
*
*
*
*
*
*
*
*
*
0
1
*
*
*
*
*
*
*
*
0
1
2 phase
1-2 phase (full torque)
1-2 phase
Channels 1 and 2
excitation
*
*
mode selection
*
*
4W1-2 phase
100% (0.2V)
0
1
0
1
*
0
0
1
1
*
0
0
0
Channels 1 and 2
current reference
voltage selection
*
*
67% (0.134V)
50% (0.1V)
*
*
*
*
33% (0.066V)
*
*
(Dummy data)
*
*
*
*
0
1
*
*
*
*
CW (Forward)
CCW (Reverse)
Cancel
1/2ch energization
direction
*
*
*
0
1
*
*
*
1/2ch step hold
1/2ch counter reset
1/2ch output enable
(Dummy data)
*
*
*
Hold
*
0
1
*
*
Reset
1
0
0
*
*
*
Cancel
*
*
0
1
*
Output OFF
Output ON
*
*
*
*
*
*
*
*
*
*
No.A0438-9/26
LV8044LP
Serial Logic Table (2)
Serial data reflection
timing
Input
Set channel
Setting mode
Description
Remarks
PI
D0 D1 D2 D3 D4 D5 D6 D7
1ch 2ch 3ch 4ch 5ch 6ch
STEP1 STEP2 STB
0
1
0
1
*
0
0
1
1
*
*
*
*
*
*
*
2 phase
1-2 phase (full torque)
1-2 phase
3/4ch
excitation
*
*
*
mode selection
*
*
*
4W1-2 phase
100% (0.2V)
67% (0.134V)
50% (0.1V)
0
1
0
1
*
0
0
1
1
*
*
3/4ch
*
*
*
0
1
0
current reference
voltage selection
*
*
*
*
*
*
33% (0.066V)
PWM
*
*
0
1
3/4ch
Channels 3 and 4
saturation/microstep
selection
*
*
*
*
Microstep
0
1
0
1
*
0
0
1
1
*
*
*
*
*
*
*
*
*
*
*
*
*
0
1
*
*
*
*
*
*
*
*
0
1
OFF
OUT3A OUT3B
OUT3B OUT3A
Brake
3ch energization
direction
*
*
(Saturated mode)
*
*
0
1
0
1
*
0
0
1
1
*
OFF
4ch energization
direction
*
*
OUT4A OUT4B
OUT4B OUT4A
Brake
*
*
(Saturated mode)
*
*
*
*
Brake
3/4ch PWM DECAY
(Saturated mode)
*
*
*
*
Standby mode
CW (Forward)
CCW (Reverse)
Cancel
1
1
0
3/4ch energization
direction
(Microstep mode)
0
1
*
*
*
*
*
*
*
0
1
*
*
*
3/4ch step hold
*
*
*
(Microstep mode)
Hold
*
0
1
*
*
Reset
3/4ch counter reset
(Microstep mode)
*
*
*
Cancel
*
*
0
1
*
Output OFF
Output ON
3/4ch output enable
(Microstep mode)
*
*
*
*
*
*
(Dummy data)
*
*
*
*
No.A0438-10/26
LV8044LP
Serial Logic Table (3)
Serial data reflection
timing
Input
Set channel
Setting mode
Description
Remarks
PI
D0 D1 D2 D3 D4 D5 D6 D7
1ch 2ch 3ch 4ch 5ch 6ch
STEP1 STEP2 STB
0
1
0
1
*
0
0
1
1
*
*
*
*
*
*
*
OFF
OUT5A OUT5B
OUT5B OUT5A
Brake
5ch energization
direction
*1
*
*
*
*
*
*
0
1
0
1
*
0
0
1
1
*
*
OFF
0
0
1
*
*
*
OUT6A OUT6B
OUT6B OUT6A
Brake
6ch energization
direction
*2
*
*
*
*
*
*
*
*
0
1
(Dummy data)
*
*
*
*
Reference setting
channel selection
5ch setting
6ch setting
0.300V
0.200V
0.190V
0.180V
0.170V
0.165V
0.160V
0.155V
0.150V
0.145V
0.140V
0.135V
0.130V
0.120V
0.110V
0.100V
0
1
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
0
1
Constant-current
reference voltage
No.A0438-11/26
LV8044LP
Serial Logic Table (4)
Serial data reflection
timing
Input
Set channel
Setting mode
Description
Remarks
PI
D0 D1 D2 D3 D4 D5 D6 D7
1ch 2ch 3ch 4ch 5ch 6ch
STEP1 STEP2 STB
0
1
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
OFF
ON
Photo-sensor drive 1
Photo-sensor drive 2
0
1
OFF
ON
*
Photo-sensor drive 3
(When PI3 output
selected)
OFF
ON
*
*
*
*
*
*
*
*
*
*
0
1
*
0
1
1
0
1
*
*
*
(Dummy data)
(Dummy data)
PI3/MO select
*
*
0
*
*
*
*
*
*
*
*
*
*
1
*
0
1
PI3 Output
MO output
1/2ch
*
*
*
0
1
*
*
*
*
*
*
MO output channel
selection
(When MO output
selected)
*3
*4
3/4ch
*
*
*
*
*
*
*
*
*
*
*
*
0
1
*
*
*
*
*
Initial position
1-2 phase
130KHz
1
1
1
MO output position
0
1
0
1
0
0
1
1
*
65KHz
Chopping frequency
setting
*
200KHz
*
100KHz
Notes
*1: This serial data is only accepted when the IN51/IN52 pulse inputs are in the Low/Low states, respectively. It is
ignored at all other times.
*2: This serial data is only accepted when the IN61/IN62 pulse inputs are in the Low/Low states, respectively. It is
ignored at all other times.
*3: When D4 = 1, MO is only output if microstep mode is selected for channels 3 and 4. In PWM mode, this output is held
fixed at the high level.
*4: The MO output can be specified to be the 1-2 phase position only in 4W1-2 phase excitation mode. In all other
excitation modes, the MO output position becomes the initial position regardless of the serial data values.
No.A0438-12/26
LV8044LP
Channels 1 and 2 Driver Circuit (Microstep drive stepping mode driver)
STEP1 Pin Function
Input
Operating mode
ST
STEP1
*
Low
High
Standby mode
Excitation step feed
High
Excitation step hold
Excitation Mode Setting (D0 = 0, D1 = 0, D2 = 0)
Initial position
D3
D4
Excitation mode
1ch
2ch
-100%
0%
0
1
0
1
0
0
1
1
2 phase excitation
1-2 phase excitation (full torque)
1-2 phase excitation
100%
100%
100%
100%
0%
4W1-2 phase excitation
0%
The initial state at power on is the initial position for each excitation mode when the counter is reset.
Reference Voltage Setting Serial Data: (D0 = 0, D1 = 0, D2 = 0)
D5
0
D6
0
Current setting reference voltage (When microstep is 100%)
0.2V
0.134V
0.1V
1
0
0
1
1
1
0.066V
The output current setting reference voltage can be switched between four levels with the serial data.
This setting is useful for saving power in the motor powered hold state.
Calculating the Set Current
Since the reference voltage can be modified (0.2, 0.134, 0.1, and 0.66V) with the serial data, the output current can be
set with the reference voltage and the resistor RF connected between the RF pin and ground.
I
= (<reference voltage> × <set current ratio>)/<RF resistor value>
OUT
Example: If the reference voltage is 0.2 V, the set current ratio is 100%, and the RF resistor value is 1, then the output
current will be that shown below.
I
= 0.2V 100%/1 = 200mA
OUT
No.A0438-13/26
LV8044LP
Output Current Vector Locus (With one step normalized to 90 degrees)
Set Current Ratios in the Different Excitation Modes
STEP
4W1-2 phase (%)
1-2 phase (%)
1-2 phase full torque (%)
1ch 2ch
100
2 phase (%)
1ch 2ch
1ch 2ch
1ch
2ch
0
1
0
10
100
100
100
96.5
93.0
89
0
74.0
100
100
74.0
0
0
2
20
3
30
4
39.5
48.5
57.5
65.5
74.0
81.5
85.5
89
5
6
85.5
81.5
74.0
65.5
57.5
48.5
39.5
30
7
8
100
100
100
100
9
10
11
12
13
14
15
16
93.0
96.5
100
100
100
20
10
0
100
0
No.A0438-14/26
LV8044LP
2 Phase Excitation (CW mode)
1-2 Phase Excitation full torque (CW mode)
1-2 Phase Excitation (CW mode)
No.A0438-15/26
LV8044LP
4W1-2 Phase Excitation (CW mode)
No.A0438-16/26
LV8044LP
Current Control Operation Specifications
Sine wave increasing direction
STEP
Set current
Coil current
Set current
fchop
Current
mode
CHARGE
SLOW
FAST
CHARGE
SLOW
FAST
Sine wave decreasing direction
STEP
Set current
Coil current
Set current
fchop
CHARGE
SLOW
FAST
CHARGE
FAST
CHARGE
SLOW
Current
mode
Each of the current modes operates with the follow sequence.
The IC enters charge mode when the chopping oscillation starts. (A period of charge mode is forcibly present in 1/8
of the period, regardless of which of the coil current (ICOIL) and the set current (IREF) is larger.)
In charge mode, the coil current (ICOIL) and the set current (IREF) are compared.
If an ICOIL < IREF state exists during the charge period:
The IC operates in charge mode until ICOIL IREF. After that, it switches to slow decay mode and then switches to
fast decay mode in the last 1/8 of the period.
If no ICOIL < IREF state exists during the charge period:
The IC switches to fast decay mode and the coil current is attenuated with the fast decay operation until the end of the
chopping period.
The above operation is repeated. Normally, in the sine wave increasing direction the IC operates in slow (+fast) decay
mode, and in the sine wave decreasing direction the IC operates in fast decay mode until the current is attenuated and
reaches the set value and the IC operates in slow decay mode.
No.A0438-17/26
LV8044LP
Chopping Frequency Setting (D6 and D7 in the serial data)
This IC integrates an internal oscillator circuit and allows the chopping frequency used in constant-current control to be
switched with the serial data (111***, D6, D7) setting.
Data D6
Data D7
Chopping frequency
130KHz
0
1
0
1
0
0
1
1
65KHz
200KHz
100KHz
Monitor Output Setting (Serial data bits D3, D4, and D5)
The signal output from the PI3/MO pin can be switched with the serial data (111, D3, ****) setting.
Data D3
PI3/MO pin output
Photosensor drive output 3
0
1
Stepping position detection monitor output
It is also possible to select which of channels 1 and 2 or channels 3 and 4 are output from the monitor pin with the serial
data (111*, D4, D5, **) setting. The MO output position used to detect the driver excitation position in microstepping
drive mode can also be switched. The state MO = Low is output at the output position.
Channels 1 and 2
excitation mode
Channels 3 and 4 excitation
mode
Data D4
Data D5
MO output
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2 phase excitation
Channels 1 and 2 monitor/initial position
1-2 phase excitation
(full torque)
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/initial position
1-2 phase excitation
4W1-2 phase excitation
Channels 1 and 2 monitor/initial position
Channels 1 and 2 monitor/1-2 phase position
Channels 3 and 4 monitor/initial position
2 phase excitation
1-2 phase excitation (full torque)
1-2 phase excitation
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/initial position
4W1-2 phase excitation
PWM drive mode
Channels 3 and 4 monitor/initial position
Channels 3 and 4 monitor/1-2 phase position
Output held fixed at the high level
No.A0438-18/26
LV8044LP
Basic Set Current Step Switching (STEP pin) and Forward/Reverse Switching (D3 in the serial data)
Operations
The IC internal D/A converter advances by 1 bits on the rising edge of the input step pulse.
The CW/CCW mode can be switched with the serial data (100, D3, ****) setting. The operation progresses with the
position number decreasing in CW mode and increasing in CCW mode.
In CW mode, the channel 2 current phase is delayed by 90 degrees relative to the channel 1 current.
In CCW mode, the channel 2 current phase is advanced by 90 degrees relative to the channel 1 current.
No.A0438-19/26
LV8044LP
Excitation Mode Switching During Operation (D3 and D4 in the serial data)
If the excitation mode is switched when power is applied to the motor, the operation follows the sequence shown below.
(CW mode)
Before excitation mode switching
Step position after excitation mode switching
Excitation mode
Position
4W1-2 phase
1-2 phase
2 phase full
2 phase
torque
(8)’
(8)’
0
(16)
(8)
(8)
0
(8)’
(8)’
(8)’
(8)’
-(8)’
(8)’
(8)’
-(8)’
(8)’
(8)’
-(8)’
(15) to (9)
4W1-2 phase
1-2 phase
(8)
(7) to (1)
0
(8)
-(8)
(8)’
-(8)’
(8)’
0
(16)
(8)
(15)
(7)
0
-(1)
(15)
(7)
-(8)’
(16)
(8)’
0
(8)
0
2 phase full torque
2 phase
-(1)
(7)
-(8)
0
(8)’
0
No.A0438-20/26
LV8044LP
Output Enable Function (D6 in the serial data)
When the OE bit in the serial data, D6 (100, ***, D6, *), is set to 0, the output is turned off and set to the
high-impedance state at the rise of STB.
Since, however, the internal logic circuits operate in this state, the position number will be advanced if a step input is
applied. Therefore, when the OE bit (D6) is returned to 1, a level according to the position number advanced by the step
input will be output.
Counter Reset Function (D5 in the serial data)
When the reset bit in the serial data, D5 (100, **, D5, **), is set to 0, the output goes to the initial state at the rise of STB
and the MO output goes low.
Then, when the reset bit (D5) is next set to 1, the position number will advance at the next step input.
No.A0438-21/26
LV8044LP
Step Hold Function (D4 in the serial data)
When the hold bit in the serial data, D4 (100, *, D4, ***), is set to 1, the external step state at that time is held without
change as the internal step state.
Since the (external) step state is low at the timing of the step hold operation (1) in the figure, the internal step state is
held at the low level, and since the (external) step state is high at the timing of the step hold operation (1), the internal
step state is held at the high level.
When the hold data (D) is set to 0, the internal state is synchronized with the external step signal.
The output is held at the state at the point where the step hold was applied and after the step hold is released, it advances
with the timing of the next step input (rising edge).
As long as the IC is in the hold state, the position number does not advance even if external step pulses are applied.
No.A0438-22/26
LV8044LP
Channels 3 and 4 Driver Circuit (Saturated drive/microstep drive)
Driver Mode Setting (D0 = 0, D1 = 1, D2 = 0)
D7 data value
Drive mode
Saturated drive
Microstep drive
Pin functions
PWM3
Notes
0
1
Used as the channel 3 PWM input pin
Used as the channels 3 and 4 excitation step input pin
STEP2
The channels 3 and 4 driver circuit can be switched between the following operating modes by bit D7 in the serial data
(010, ****, D7).
(1) Two saturated mode driver channels
(2) One microstep drive stepping motor driver channel
Microstep Drive Stepping Motor Driver
The basic functionality provided is identical to that of the channels 1 and 2 stepping motor driver. See section 10-2 for
details on the serial data settings.
PWM Saturated Mode Driver
Channel 3 Truth Table (PWM mode: D0 = 1, D1 = 1, D2 = 0)
Input
Output
Operating mode
ST
PWM3
*
D3
D4
*
D7
*
OUT3A
OFF
OFF
High
Low
OUT3B
OFF
OFF
Low
Low
High
High
High
High
High
High
*
0
1
0
1
*
Standby mode
Output off
Low
Low
Low
Low
High
High
0
0
1
1
*
*
*
CW (forward)
*
High
Low
CCW (reverse)
Brake
*
Low
0
1
Low
Low
SLOW DECAY (brake)
FAST DECAY (output off)
*
*
OFF
OFF
Channel 4 Truth Table (PWM mode: D0 = 1, D1 = 1, D2 = 0)
Input
Output
Operating mode
ST
PWM4
*
D5
D6
*
D7
*
OUT4A
OFF
OFF
High
Low
OUT4B
OFF
OFF
Low
Low
High
High
High
High
High
High
*
0
1
0
1
*
Standby mode
Output off
Low
Low
Low
Low
High
High
0
0
1
1
*
*
*
CW (forward)
*
High
Low
CCW (reverse)
Brake
*
Low
0
1
Low
Low
SLOW DECAY (brake)
FAST DECAY (output off)
*
*
OFF
OFF
*: Don’t care
No.A0438-23/26
LV8044LP
Channels 5 and 6 Driver Circuit (Constant-current drive)
Output Function
When the channels 5 and 6 driver circuit is used to drive an actuator, it can be controlled either from the serial data or
from the IN51, IN52, IN61, and IN62 parallel signals.
When the parallel input signals IN51 (IN61)/IN52 (IN62) are in the low/low state (note that since these inputs are
pulled down internally in the IC, the open/open state can also be used), the output mode will be determined by the serial
data.
If the parallel input signals are in any state other than the above, the serial data will be ignored and the output mode will
be determined by the parallel inputs.
Truth Table (Channel 5: D0 = 0, D1 = 0, D2 = 1)
Parallel input
Serial data
Outputs
Mode
IN51
IN52
D3
0
1
0
1
*
D4
0
0
1
1
*
OUT5A
OFF
High
Low
OUT5B
OFF
Low
Standby mode
CW (forward)
CCW (reverse)
Brake
Low
Low
High
Low
Low
High
Low
High
Low
High
High
High
Low
Low
CW (forward)
CCW (reverse)
Brake
*
*
High
Low
*
*
Low
Truth Table (Channel 6: D0 = 0, D1 = 0, D2 = 1)
Parallel input
Serial data
Outputs
Mode
IN61
IN62
D5
0
1
0
1
*
D6
0
0
1
1
*
OUT6A
OFF
High
Low
OUT6B
OFF
Low
Standby mode
CW (forward)
CCW (reverse)
Brake
Low
Low
High
Low
Low
High
Low
High
Low
High
High
High
Low
Low
CW (forward)
CCW (reverse)
Brake
*
*
High
Low
*
*
Low
*: Don’t care
No.A0438-24/26
LV8044LP
Constant-Current Control
Reference Voltage Setting (D0 = 1, D1 = 0, D2 = 1, D3 = 0 (channel 5) or D3 = 1 (channel 6))
D4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
D5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
D7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Current setting reference voltage
0.300V
0.200V
0.190V
0.180V
0.170V
0.165V
0.160V
0.155V
0.150V
0.145V
0.140V
0.135V
0.130V
0.120V
0.110V
0.100V
The constant-current setting for channels 5 and 6 can be set individually for each channel.
(When D3 is 0, channel 5 is set, and when D3 is 1, channel 6 is set.)
The constant-current output value is set by the constant-current reference voltage set with the serial data and the value
of the resistor (referred to as "RF" here) connected to the RF5 or RF6 pin.
The formula below is used to calculated the constant-current output value.
<Constant-current output level> = <current setting reference voltage>/<RF resistor>
No.A0438-25/26
LV8044LP
Photosensor Drive Circuit (PI1, PI2, and PI3)
The photosensor drive circuit has open-drain outputs. The output is controlled (set to on or off) by a bit in the serial data
(0 or 1).
Truth Table
Input
Output
Drive circuit
ST
D3
*
D4
*
D5
*
PI1
PI2
PI3
Low
High
High
High
High
High
High
OFF
OFF
OFF
Standby mode
0
1
*
*
*
OFF
*
*
Off
On
Off
On
Off
On
*
*
Low
*
OFF
Low
*
*
*
0
1
*
*
*
*
*
*
*
*
*
*
0
1
OFF
Low
*
*
*
ORDERING INFORMATION
Device
Package
VQLP40(5.0X5.0)
(Pb-Free)
Shipping (Qty / Packing)
2450 / Tray JEDEC
LV8044LP-MPB-E
VQLP40(5.0X5.0)
(Pb-Free / Halogen Free)
LV8044LP-MPB-H
LV8044LP-TLM-E
LV8044LP-TLM-H
2450 / Tray JEDEC
2000 / Tape and Reel
2000 / Tape and Reel
VQLP40(5.0X5.0)
(Pb-Free)
VQLP40(5.0X5.0)
(Pb-Free / Halogen Free)
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PS No.A0438-26/26
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