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Ordering number : ENA1550
Bi-CMOS LSI
LV8081GQ Two channels Constant-current
H-bridge Driver
Overview
The LV8081GQ is a two-channel constant-current driver that supports low-voltage operation. It is optimal for
constant-current drive of stepping motors (AF and zoom) in portable equipment such as camera cell phones.
Features
Two channels constant-current H-bridge driver
Built-in position detection comparator, SW for the photo reflector (independent control)
Supports both 2 phase excitation drive and 1-2 phase excitation drive.
Implemented in a low-power MOS IC process.
Ultraminiature easy to solder UCT16 package (2.6 × 2.6 × 0.6mm)
Built-in thermal shutdown circuit and Low voltage shutdown circuit.
1.8V input interface with battery supply.
OUT1-3 short , OUT2-4 short and REG1-2 is short-circuited, and it is possible to correspond as 1ch driver.
Specifications
Absolute Maximum Ratings at Ta = -30 to 85°C(It becomes a design certification excluding 25.)
Parameter
Symbol
Conditions
Maximum supply voltage
Output voltage
Input voltage
Ground pin source current
VCC, VM max
VOUT max
VIN max
IGND
OUT1, OUT2, OUT3, OUT4
CONT, IN
Per channel
Allowable power dissipation
Pd max
Mounted on a circuit board.*
Operating temperature
Topr
Storage temperature
Tstg
* Specified circuit board : 40×50×0.8mm3 : 4-layer (2S2P) glass epoxy printed circuit board
Ratings
6.5
6.5
-0.3 to +6.5
400
700
-30 to +85
-40 to +150
Unit
V
V
V
mA
mW
°C
°C
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.
82609 SY 20071126-S00002 No.A1550-1/9
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LV8081GQ
Allowable Operating Ratings at Ta = -30 to 85°C(It becomes a design certification excluding 25.)
Parameter
Supply voltage
Renge of fixed corrent setting
High-level input voltage
Low-level input voltage
Symbol
VCC
IO
VIH
VIL
Conditions
100mA or more is the design certification.
CONT, IN
Ratings
2.5 to 6.0
70 to 250
1.25 to VCC
-0.3 to 0.5
Unit
V
mA
V
V
Electrical Characteristics at VCC = 3.0V ,Ta = -30 to 85°C(It becomes a design certification excluding 25.)
Parameter
Symbol
Conditions
Ratings
min typ max
Unit
Current drain
Output on resistance
Constant-current output
Output turn-on time
ICCO
ICCO1
ICCO2
Ron1
Ron2
IOUT1
IOUT2
Trise
IN = 0V
IN = 3V
VCC = 6.5V, IN = 6.5V
VCC = 3.0V (High and low side total)
EN = 3.0V, IOUT = 100mA
VCC = 5.0V (High and low side total)
EN = 5.0V, IOUT = 100mA
Between RFG and ground : 1Ω
Between RFG and ground : 0.5Ω
(Design specification)
With RFG1 and RFG2 shorted to ground
0.1
0.7
0.85
2.0
1.50
94 100
188 200
1.3
1 μA
1 mA
1.1 mA
3.0 Ω
2.0 Ω
106 mA
212 mA
3 μs
Output turn-off time
Tfall With RFG1 and RFG2 shorted to ground
0.25
0.7 μs
Position detection voltage
(high level)
Position detection voltage
(low level)
Detection voltage hysteresis
VH
VL
HYS
0.74
0.165
1.0
0.8
0.18
1.06
0.195
V
V
V
Comparator input current value
ICOMPIN VCOMPIN = 0V
Comparator output saturation
voltage
VOcomp
IO = 0.5mA
PI/PR pin resistance
RonPIPR IO = 10mA
PI/PR pin current
IPI/PR
Input current
IIN1 VIN = 3V
IIN2 VIN = 6.5V
Note : The design specification items are design guarantees and are not measured.
0.15
0.12
0.3 μA
0.21 V
17 32 Ω
20 mA
50 85 μA
120 155 μA
Package Dimensions
unit : mm (typ)
3341
TOP VIEW
2.6
SIDE VIEW
BOTTOM VIEW
(0.125)
(C0.116)
SIDE VIEW
16
21
0.5
(0.55)
0.25
Pd max -- Ta
1.0
Mounted on a specified board :
50.0mm x 40.0mm x 0.8mm
0.8 glass epoxy 4-layer substrate
0.7
0.6
0.4
0.36
0.2
SANYO : UCT16(2.6X2.6)
0
-30 -10 10 30 50 70 90
Ambient temperature, Ta - C
No.A1550-2/9
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LV8081GQ
Pin Assignment
(UCT16)
RFG1 VCC PI/PR COMPOUT
16 15 14 13
OUT1 1
12 COMPIN
OUT2 2
11 GND
OUT3 3
10 CONT
OUT4 4
9 IN2
(Top View)
5678
RFG2 IN3 IN4 IN1
Block Diagram
VCC
0.1uF
IN1 10k
IN 2 10k
IN3 10k
IN 4 10k
60k 60k 60k 60k
L
O
G
I
C
CONT
Micon signal
0.1V
1.0V
OUT1
OUT2
STM
RFG1
VM
OUT3
OUT4
LVS TSD
COMPIN
PI sensor
COMPOUT PI/PR
GND
RFG2
Constant-current calculation : IOUT = 0.1 ÷ RF Example : When an IOUT of 100mA is required, RF must be 1Ω.
Usage Notes
The constant current is set by the resource RF connected between RFG and ground according to the formula shown
above.
In the electrostatic destruction diode, the terminal PIPR, and the terminal COMP, other terminals are the upper and
lower diode specifications only in a lower diode.
No.A1550-3/9
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LV8081GQ
Truth Table
IN1
Low
Low
High
High
IN2
Low
High
Low
High
--
Input
IN3
Low
-
Low
High
High
IN4
Low
-
High
Low
High
CONT
Low
High
OUT1
Off
Low
High
Low
Off
Output
OUT2 OUT3
Off Off
High
Low Off
Low
Low
Off High
Low
OUT4
Off
Off
High
Low
Low
COMP
& PIPR
OFF
ON
Mode
Standby mode
Channel 1, reverse
Channel 1, forward
Channel 1, brake mode
Channel 2, reverse
Channel 2, forward
Channel 2, brake mode
Note : The "-" input unstable state. When off, a high-impedance state.
• The ENA goes to the standby state with a low-level input, and to the operating state with a high-level input.
• The control input switches the forward/reverse mode.
• The comparator and PIPR can independently control the terminal CONT. It is irrelevant to the state of IN4 from IN1.
Pin Description
Pin No.
Pin Name
Description
1 OUT1
2 OUT2
3 OUT3
4 OUT4
1-4 : Output pins
H-bridge type output pins
Pins 1 and 2 are paired and pins 3 and 4 are paired.
5 RFG2
16 RFG1
5, 16 : Current sensing resistor connection pins
Connect the current sensing resistor between these
pins and ground to detect the output currents for
constant current control.
Pin 16 corresponds to the output from pins 1 and 2 and
pin 5 to the output from pins 1 and 2.
6 IN3
7 IN4
8 IN1
9 IN2
10 CONT
Logic input pins
VCC
Equivalent Circuit
12
-
+ 10kΩ
0.1V
5
6
VCC
11 GND
Ground
GND
Continued on next page.
No.A1550-4/9
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LV8081GQ
Continued from preceding page.
Pin No.
Pin Name
Description
12 COMPIN
Photo reflector position sensing comparator input
Equivalent Circuit
VCC
1kΩ
12
13 COMPOUT
Photo reflector position sensing comparator output
This pin serves as an open-collector output of the NPN
transistor.
1kΩ
13
GND
14 PI/PR
A switch, with NMOS open-drain output, used to turn
on/off the power supply of the position sensor unit. When
using this switch, connect the position sensor unit
between this pin and the VCC pin.
On/off control of this switch is accomplished by CONT
pin. Setting the CONT pin high turns on the switch.
6
VCC
GND
15 VCC
Power supply pin
Timing Chart
(1) Stepper motor timing chart
Timing chart for 2-phase drive
IN1
IN2
IN3
IN4
GND
Channel 1
output mode
Channel 2
output mode
Standby Forward
Reverse
Forward Reverse Forward
Standby
Standby
Forward
Reverse
Forward
Reverse Forward Standby
No.A1550-5/9
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