ONSEMI LB1836M

Ordering number : EN3947F
LB1836M
Monolithic Digital IC
Low-Saturation Bidirectional Motor
Driver for Low-Voltage Drive
http://onsemi.com
Overview
The LB1836M is a low-saturation two-channel bidirectional motor driver IC for use in low-voltage applications.
The LB1836M is a bipolar stepper-motor driver IC that is ideal for use in printers, FDDs, cameras and other portable
devices.
Features
• Low voltage operation (2.5V min)
• Low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40V typ at 400mA).
• Parallel connection (Upper transistor + lower transistor residual voltage ; 0.5V typ at 800mA).
• Separate logic power supply and motor power supply
• Brake function
• Spark killer diodes built in
• Thermal shutdown circuit built in
• Compact package (14-pin MFP)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Maximum supply voltage
Output supply voltage
Conditions
VS max
-0.3 to +10.5
V
VS + VSF
V
VIN
GND pin flow-out current
IGND
Allowable power dissipation
Unit
-0.3 to +10.5
VOUT
Input supply voltage
Ratings
VCC max
Pd max
Per channel
* Mounted on a board.
V
-0.3 to +10
V
1.0
A
800
mW
Operating temperature
Topr
-40 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
3
* Mounted on a substrate: 30×30×1.5mm , glass epoxy 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
31110 SY/82207 MS/71807 MS 20070709-S00001/70407 MS PC/21097HA/D2293/O0693 No.3947-1/6
June, 2013
LB1836M
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Supply voltage
Conditions
Ratings
Unit
VCC
2.5 to 9.0
VS
1.8 to 9.0
V
V
Input “H”-level voltage
VIH
1.8 to 9.0
V
Input “L”-level voltage
VIL
-0.3 to +0.7
V
Electrical Characteristics at Ta = 25°C, VCC = VS = 3V
Parameter
Symbol
Ratings
Conditions
min
Supply current
typ
Unit
max
ICC0
VIN1, 2, 3, 4 = 0V, ICC + IS
0.1
10
μA
ICC1
VIN1 = 3V, VIN2, 3, 4 = 0V, ICC + IS
14
20
mA
ICC2
VIN1, 2 = 3V, VIN3, 4 = 0V, ICC + IS
22
35
mA
Output saturation voltage
VOUT1
IOUT = 200mA
0.20
0.28
V
(upper + lower)
VOUT2
IOUT = 400mA
0.40
0.60
V
VOUT3
IOUT = 400mA, Parallel connection
0.25
0.35
V
VOUT4
IOUT = 800mA, Parallel connection
0.50
0.70
V
80
μA
Output sustain voltage
VO (SUS)
Input current
IOUT = 400mA
IIN
9
V
VIN = 2V, VCC = 6V
Spark killer diode
Reverse current
IS (leak)
VCC1, 2 = 9V
30
μA
Forward voltage
VSF
IOUT = 400mA
1.7
V
Package Dimensions
unit : mm (typ)
3111A
Pd max -- Ta
Allowable power dissipation, Pd max -- mW
1000
8.0
14
0.63
4.4
6.4
8
1
1.7MAX
7
1.0
0.35
0.15
0.1 (1.5)
(1.0)
SANYO : MFP14S(225mil)
Specified board : 30×30×1.5mm3
glass epoxy
800
600
420
400
200
0
ñ 40
ñ 20
0
20
40
60
8085
100
Ambient temperature, Ta -- °C
Pin Assignment
GND
14
IN3
13
OUT3
12
VS2
11
OUT4
10
IN4
9
Vcont
8
LB1836M
1
VCC
2
IN1
3
OUT1
4
VS1
5
OUT2
6
IN2
7
GND
Top view
Note) Ground both GND pins.
No.3947-2/6
LB1836M
Block Diagram
VCC
VS2
VS1
10μF
IN1
Controller
OUT1
M
OUT2
IN2
Thermal shutdown
OUT3
Controller
IN3
M
OUT4
IN4
GND
GND
Truth Table
IN1/3
IN2/4
OUT1/3
OUT2/4
Mode
H
L
H
L
Forward
L
H
L
H
Reverse
H
H
L
L
Brake
L
L
OFF
OFF
Standby
No.3947-3/6
LB1836M
Design Notes
If large current flows on the power supply (VS) line and the GND line, then in some applications and layouts,
misoperation due to line oscillation may result.
The modes during which large current flows are as follows :
• Motor surge current when the DC motor starts up or when it shifts rotation directions (forward ↔ reverse).
• Passthrough current generated within the IC when shifting rotation directions (forward ↔ reverse) or when shifting
from forward/reverse rotation to braking, or vice versa.
The following points should be kept in mind regarding the pattern layout :
• Keep the wiring lines thick and short in order to reduce wiring inductance between the power supply (VS) and GND.
• Insert a passthrough capacitor near the IC. (Maximum effect is obtained by inserting the passthrough capacitor
between VS and the pin 7 GND at the closest distance possible.
• If the CPU and the LB1836M are mounted on separate boards and the difference between the ground potential of each
board is large, install resistors of about 10kΩ in series between the CPU and the LB1836M inputs.
Vcont pin
VCC
VS
OUT
IN
300Ω
M
ID
VZ
OUT
ID =
VZ
r (= constant)
Vcont
As shown in the above diagram, the Vcont pin outputs the voltage of the band gap Zener VZ + VF (=1.93V).
In normal use, this pin is left open.
The drive current ID is varied by the Vcont voltage. However, because the band gap Zener is shared, it functions as a
bridge.
No.3947-4/6
LB1836M
VO (sat) – IO
IIN – Ta
110
VCC = VS = IN = 3V
100
0.8
Input current, IIN – μA
Output saturation voltage, VO (sat) – V
1.0
0.6
0.4
0.2
90
IN
1
IN
2
80
70
0
0
100
200
300
400
500
0
– 40
600
– 20
0
VO (sat) – Ta
IO = 200mA
0.1
0
– 40
– 20
0
20
40
60
80
100
120
160
l
0.6
0.4
l
tota
on
cti
nne
l co
alle
Par
0.2
100
200
300
400
500
600
700
800
900
Output current, IO – mA
IS – Ta
ICC – Ta
6
VCC = VS = IN = 3V
VCC = VS = IN = 3V
5
Current drain, ICC – mA
Current drain, IS – mA
140
0.8
0
0
140
20
Bre
16
ak
12
Forwar
d
Revers
e
8
4
4
Brea
k
3
Forward
Reverse
2
1
0
– 40
– 20
0
20
40
60
80
100
120
140
0
– 40 – 20
160
0
Ambient temperature, Ta – °C
20
40
60
80
100
120
140
160
Ambient temperature, Ta – °C
IIN – VIN
400
IN1
IN2
IN3
IN4
300
200
100
ICC – VCC
28
VCC = VS = 3V
VS = IN = 3V
24
Current drain, ICC – mA
Input current, IIN – μA
120
VO (sat) – IO
1.0
Ambient temperature, Ta – °C
24
100
ta
A
= 400m
0.2
0.3
80
to
IO
60
h
0.5
0.4
40
1c
VCC = VS = IN = 3V
VO(sat) = total value
Output saturation voltage, VO (sat) – V
Output saturation voltage, VO (sat) – V
0.6
20
Ambient temperature, Ta – °C
Output current, IO – mA
k
ea
Br
20
16
12
se
ever
rd/R
a
Forw
8
4
Standby
0
0
0
1
2
3
4
5
6
7
Input voltage, VIN – V
8
9
10
0
1
2
3
4
5
6
7
8
9
10
11
Supply voltage, VCC – V
No.3947-5/6
LB1836M
IS – VS
24
VCC = IN = 3V
Break
Current drain, IS – mA
20
16
12
Forward/Reverse
8
4
Standby
0
0
1
2
3
4
5
6
7
8
9
10
11
Supply voltage, VS – V
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PS No.3947-6/6