Ordering number : ENA0612
Bi-CMOS LSI
LV8743V
Overview
PWM Constant-Current Control Stepping Motor
Driver and Switching Regulator Controller
The LV8743V is a PWM constant-current control stepping motor driver and switching regulator controller IC.
Features
•
Provides a single PWM constant-current control stepping motor driver circuit
•
Two switching regulator controller circuits
•
Can control stepping motors with up to W1-2 phase commutation
•
Built-in high-precision reference voltage circuit
•
Timer/latch type short circuit protection circuit
•
Built-in high and low side regenerative diodes
•
Thermal shutdown circuit
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
VM max
VCC max
Output voltage
Driver output peak current
Driver output continuous current
Regulator output current
Allowable power dissipation
VO max
MDIO peak
MDIO max
SWIO max
Pd max1
Pd max2
Operating temperature
Storage temperature
Topr
Tstg
Independent IC
Mounted on a circuit board.*
tw
≤
10ms, duty 20%
Conditions
Ratings
40
6
40
800
500
120
0.5
2.8
-20 to +85
-55 to +150
Unit
V
V
V
mA
mA
mA
W
W
°C
°C
* Specified circuit board : 90×90×1.7mm
3
: 2-layer glass epoxy printed circuit board
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'
s products or
equipment.
22807 MS PC 20060516-S00009 No.A0612-1/21
LV8743V
Recommended Operating Ratings
at Ta = 25°C
Parameter
Supply voltage range
Symbol
VM
VCC
Logic input voltage
VREF1 input voltage
Regulator output voltage
Regulator output current
Error amplifier input voltage
Timing capacitor
Timing resistor
Triangle wave frequency
VIN
VREF1
VO
IO
VOA
CT
RT
FOSC
Conditions
Ratings
10 to 35
4.5 to 5.5
0 to VCC+0.3
0 to 3
10 to VM
0 to 100
0 to 3
100 to 15000
5 to 50
10 to 800
Unit
V
V
V
V
V
mA
V
pF
kΩ
kHz
Electrical Characteristics
at Ta = 25°C, VM = 24V, VCC = 5V, VREF1 = 1.5V
Parameter
Overall Characteristics
VM current consumption
VCC current consumption
VCC low-voltage cutoff voltage
Low-voltage cutoff hysteresis
Thermal shutdown temperature
Thermal shutdown hysteresis
Motor Drivers
[Charge pump block]
Step-up voltage
Rise time
Oscillator frequency
[Output block]
Output on resistance
Ron1
Ron2
Output leakage current
Diode forward voltage
[Logic input block]
Logic pin input current
IINL
IINH
Logic high-level input voltage
Logic low-level input voltage
[Current control block]
VREF input current
CR pin current
MD pin voltage
Current setting comparator
threshold voltage
IREF1
ICR
VMD
VHH
VLH
VHL
VREF1 = 1.5V
CR = 1.0V
MD = open
VREF1 = 1.5V, IO = H, I1 = H
VREF1 = 1.5V, IO = L, I1 = H
VREF1 = 1.5V, IO = H, I1 = L
-0.5
-1.6
3.21
0.291
0.191
0.093
-1.25
3.38
0.300
0.200
0.100
-0.9
3.55
0.309
0.209
0.107
µA
mA
V
V
V
V
VINH
VINL
VIN = 0.8V
VIN = 5V
3
30
2.0
0.8
8
50
15
70
µA
µA
V
V
IOleak
VD
IO = 300mA, sink side
IO = -300mA, source side
VO = 35V
ID = -300mA
1.0
1.1
1.5
1.4
1.8
50
1.3
Ω
Ω
µA
V
VGH
tONG
Fchop
VM = 24V, VCC = 5V
VGH = 10µF
90
28.3
28.8
50
120
29.3
100
150
V
ms
kHz
IM
ICC
VthVCC
VthHIS
TSD
∆TSD
Design guarantee
Design guarantee
PS = High, no load
PS = High, no load
3.2
60
2.5
3.5
3.5
110
180
40
3.5
4.5
3.8
160
mA
mA
V
mV
°C
°C
Symbol
Conditions
min
Ratings
typ
max
Unit
Switching Regulator Controller
[Reference voltage block]
Output voltage
Input stability
Load stability
[Triangle wave oscillator block]
Oscillator frequency
Frequency stability
Current setting pin voltage
FOSC
FDV
VRT
RT = 10kΩ, CT = 200pF
VM = 10 to 35V
RT = 10kΩ
0.89
360
400
1
0.96
440
5
1.03
kHz
%
V
VREGS
VDLI
VDLO
Iregs = -1mA
VM = 10 to 35V
Iregs = 0 to -3mA
2.475
2.500
2.525
10
10
V
mV
mV
Continued on next page.
No.A0612-2/21
LV8743V
Continued from preceding page.
Parameter
[Protection circuit block]
Comparator threshold voltage
Standby voltage
Source current
Threshold voltage
Latch voltage
[Soft start circuit block]
Source current
Latch voltage
ISOFT
VltSOFT
VSOFT = 0V
ISOFT = 40µA
1.15
1.45
1.75
100
µA
mV
VthFB
VstSCP
ISCP
VthSCP
VltSCP
ISCP = 40µA
FB3, FB4
ISCP = 40µA
VSCP = 0V
1.5
1.55
2.4
1.7
1.38
1.53
1.68
100
3.3
1.85
100
V
mV
µA
V
mV
Symbol
Conditions
min
Ratings
typ
max
Unit
[Low input voltage malfunction prevention circuit]
Threshold voltage
Hysteresis voltage
[Error amplifier block]
Input offset voltage
Input offset current
Input bias current
Open-loop gain
Common-mode input voltage range
Common-mode rejection ratio
Maximum output voltage
Minimum output voltage
Output sink current
Output source current
[PWM comparator block]
Input threshold voltage
(Fosc = 10kHz)
Input bias current
Maximum duty cycle
[Output block]
Output on resistance
Leakage current
Ron
ILEAK
IO = 75mA
VO = 35V
7
10
5
Ω
µA
VT100
VT0
IBDT
Don
Duty cycle = 100%
Duty cycle = 0%
DT = 0.4V
With the VREGS voltage divided by 17kΩ
and 8kΩ resistors
57
67
0.90
0.45
0.96
0.48
1.02
0.51
1
77
V
V
µA
%
Vio
Iio
Iib
AV
VCM
CMRR
VOH
VOL
Isi
Iso
FB = 2.5V
FB = 2.5V
300
45
4.5
VM = 10 to 35V
80
5.0
0.2
600
75
0.5
1000
105
85
3.0
6
30
100
mV
nA
nA
dB
V
dB
V
V
µA
µA
VUT
VHIS
8.4
240
8.8
340
9.2
440
V
mV
Package Dimensions
unit : mm (typ)
3333
TOP VIEW
15.0
44
23
SIDE VIEW
BOTTOM VIEW
(4.7)
5.6
7.6
(3.5)
1
(0.68)
0.65
0.22
22
0.2
1.7MAX
SIDE VIEW
0.1 (1.5)
0.5
SANYO : SSOP44K(275mil)
No.A0612-3/21
LV8743V
3.5
Pd max – Ta
*1 With components mounted on the exposed die-pad board
*2 With no components mounted on the exposed die-pad board
Allowable power dissipation, Pd max – W
3.0
Two-layer circuit board 1 *1
2.8
2.5
Two-layer circuit board 2 *2
2.0
2
1.5
1.46
1.04
1.0
0.5
Independent IC
0.5
0.26
0
–
20
0
20
40
60
80
100
Ambient temperature, Ta – °C
Substrate Specifications
(Substrate recommended for operation of LV8743V)
Size
: 90mm × 90mm × 1.7mm (2-layer substrate [2S0P])
Material
: Glass epoxy
Copper wiring density : L1 = 80% / L2 = 90%
L1 : Copper wiring pattern diagram
L2 : Copper wiring pattern diagram
Cautions
1) The data for the case with the Exposed Die-Pad substrate mounted shows the values when 95% or more of the
Exposed Die-Pad is wet.
2) For the set design, employ the derating design with sufficient margin.
Stresses to be derated include the voltage, current, junction temperature, power loss, and mechanical stresses such as
vibration, impact, and tension.
Accordingly, the design must ensure these stresses to be as low or small as possible.
The guideline for ordinary derating is shown below :
(1)Maximum value 80% or less for the voltage rating
(2)Maximum value 80% or less for the current rating
(3)Maximum value 80% or less for the temperature rating
3) After the set design, be sure to verify the design with the actual product.
Confirm the solder joint state and verify also the reliability of solder joint for the Exposed Die-Pad, etc.
Any void or deterioration, if observed in the solder joint of these parts, causes deteriorated thermal conduction,
possibly resulting in thermal destruction of IC.
No.A0612-4/21
LV8743V
Pin Assignment
CR2 1
PHA2 2
I12 3
IO2 4
PS 5
PGND1 6
GND 7
OUT2B 8
RNF2 9
OUT2A 10
VMM 11
OUT1B 12
RNF1 13
OUT1A 14
PGND2 15
VG 16
VM 17
CP2 18
CP1 19
VCC 20
VREF1 21
CR1 22
Top view
44 GND
43 OUT4
42 OUT3
41 VMSW
40 INV4
39 FB4
38 DT4
37 NON4
36 INV3
35 FB3
LV8743V
34 DT3
33 NON3
32 SOFT
31 SCP
30 CREG
29 RT
28 CT
27 VREGS
26 MD
25 PHA1
24 I11
23 IO1
PCA01177
No.A0612-5/21
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
