Ordering number : ENA1961
LV8773
Bi-CMOS LSI
PWM Constant-Current Control
Stepping Motor Driver
Overview
http://onsemi.com
The LV8773 is a 2-channel H-bridge driver IC, which supports forward, reverse, brake, and standby of a motor. It is
ideally suited for driving brushed DC motors and stepping motors used in office equipment and amusement
applications.
Features
•
BiCDMOS process IC
•
Low on resistance (upper side : 0.3Ω ; lower side : 0.25Ω ; total of upper and lower : 0.55Ω ; Ta = 25°C, IO = 2A)
•
Motor current selectable in two steps
•
Output short-circuit protection circuit (selectable from latch-type or auto-reset-type) incorporated
•
Unusual condition warning output pins
•
No control power supply required
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Supply voltage
Output peak current
Output current
Logic input voltage
EMO1/EMO2 input voltage
Allowable power dissipation
Symbol
VM max
IO peak
IO max
VIN
Vemo/Vemo2
Pd max1
Pd max2
Operating temperature
Storage temperature
Topr
Tstg
1 unit
*
tw
≤
10ms, duty 20%
Conditions
Ratings
36
2.5
2
-0.3 to +6
-0.3 to +6
3.0
6.2
-20 to +85
-55 to +150
Unit
V
A
A
V
V
W
W
°C
°C
* Specified circuit board : 90.0mm×90.0mm×1.6mm, glass epoxy 2-layer board.
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.
Semiconductor Components Industries, LLC, 2013
June, 2013
62211 SY 20110609-S00001 No.A1961-1/14
LV8773
Allowable Operating Ratings
at Ta = 25°C
Parameter
Supply voltage range
Logic input voltage
VREF input voltage range
Symbol
VM
VIN
VREF
Conditions
Ratings
9 to 32
0 to 5.5
0 to 3
Unit
V
V
V
Electrical Characteristics
at Ta = 25°C, VM = 24V, VREF = 1.5V
Parameter
Standby mode current drain
Current drain
VREG5 output voltage
Thermal shutdown temperature
Thermal hysteresis width
Motor driver
Output on resistance
Ronu
Rond
Output leakage current
Diode forward voltage
Logic pin input current
IOleak
VD
IINL
IINH
Logic high-level input voltage
Logic low-level input voltage
Current setting comparator
threshold voltage
(current attenuation rate switching)
Chopping frequency
CHOP pin charge/discharge current
Chopping oscillation circuit
threshold voltage
VREF pin input current
Charge pump
VG output voltage
Rise time
Oscillator frequency
Output short-circuit protection
EMO1/EMO2 pin saturation voltage
CEM pin charge current
CEM pin threshold voltage
Vsatemo
Icem
Vtcem
Iemo = 1mA
Vcem = 0V
7
0.8
10
1
400
13
1.2
mV
μA
V
VG
tONG
Fosc
VG = 0.1μF
90
28
28.7
200
125
150
29.8
V
μS
kHz
Fchop
Ichop
Vtup
Vtdown
Iref
VREF = 1.5V
Cchop = 220pF
36.3
7
0.8
0.4
-0.5
45.4
10
1
0.5
54.5
13
1.2
0.6
kHz
μA
V
V
μA
VINH
VINL
Vtatt0
Vtatt1
ATT = L
ATT = H
0.291
0.143
0.3
0.15
ID = -2A
VIN = 0.8V
VIN = 5V
4
30
2.0
0.8
0.309
0.157
1.2
8
50
IO = 2A, Upper-side on resistance
IO = 2A, Lower-side on resistance
0.3
0.25
0.4
0.33
50
1.4
12
70
Ω
Ω
μA
V
μA
μA
V
V
V
V
Symbol
IMst
IM
Vreg5
TSD
ΔTSD
ST = “L”
ST = “H”, OE = “L”, with no load
IO = -1mA
Design guarantee
Design guarantee
4.5
150
Conditions
min
Ratings
typ
100
3.2
5
180
40
max
400
5
5.5
200
μA
mA
V
°C
°C
Unit
8.0
Pd max
-
Ta
Specified bord:90.0mm
¥
90.0mm
¥
1.6mm
3
2 Layer glass epoxy
with substrate
Allowable power dissipation, Pd max - W
6.2
6.0
4.0
1 unit
3.0
2.0
3.2
1.5
0
–
20
0
20
40
60
80
100
Ambient temperature, Ta - C
No.A1961-2/14
LV8773
Package Dimensions
unit : mm (typ)
3241A
26.75
(20.0)
(R1.7)
28
15
(8.4)
1.0
(1.81)
3.6
(4.0)
1.78
0.6
SANYO : DIP28HC(500mil)
Pin Assignment
CP2 1
CP1 2
VREG5 3
ATT 4
EMO1 5
CEM 6
EMM 7
0.4
1
14
11.2
12.7
28
27
26
25
24
23
VM
VG
OUT1A
PGND
VM1
RF1
22 OUT1B
LV8773
CHOP 8
EMO2 9
DC22 10
DC21 11
DC12 12
DC11 13
ST 14
Top view
21 OUT2A
20 RF2
19
VM2
18 PGND
17 OUT2B
16 GND
15 VREF
No.A1961-3/14
Block Diagram
CP1
OUT1A
VM2 OUT2A
OUT2B
RF2
CP2
VG
RF1
OUT1B VMI
VM
Charge pump
24V
+
-
Output preamplifier stage
Output preamplifier stage
Output preamplifier stage
LV8773
VREG5
Regulator
-
+
+
-
Oscillation
circuit
Output control logic
-
+
EMO1
TSD
5V
VREF
+
1.5V -
Output preamplifier stage
PGND
GND
Overcurrent
protection circuit
EMO2
CHOP
ST
ATT
DC11 DC12
DC21 DC22 EMM
CEM
No.A1961-4/14
LV8773
Pin Functions
Pin No.
4
7
10
11
12
13
Pin Name
ATT2
EMM
DC22
DC21
DC12
DC11
Pin Function
Motor holding current switching pin.
Output short-circuit protection mode
switching pin.
Channel 2 output control input pin 2
Channel 2 output control input pin 1
Channel 1 output control input pin 2
Channel 1 output control input pin 1
Equivalent Circuit
VREG5
10kΩ
100kΩ
GND
14
ST
Chip enable pin.
VREG5
20kΩ
10kΩ
80kΩ
GND
17
18, 25
19
20
21
22
23
24
26
OUT2B
PGND
VM2
RF2
OUT2A
OUT1B
RF1
VM1
OUT1A
Channel 2 OUTB output pin.
Power system ground.
Channel 2 motor power supply
connection pin.
Channel 2 current-sense resistor
connection pin.
Channel 2 OUTA output pin.
Channel 1 OUTB output pin.
Channel 1 current-sense resistor
connection pin.
Channel 1 motor power supply pin.
Channel 1 OUTA output pin.
19
24
21
26
17
22
25 18
20
23
GND
27
28
1
2
VG
VM
CP2
CP1
Charge pump capacitor connection pin.
Motor power supply connection pin.
Charge pump capacitor connection pin.
Charge pump capacitor connection pin.
2
VREG5
28
1
27
GND
16
GND
Ground.
Continued on next page.
No.A1961-5/14
嵌入式系统
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