Document
Ordering number : EN7233A
LB1936V
Monolithic Digital IC
1-2 Phase Excitation Stepper Motor Driver
http://onsemi.com
Overview
The LB1936V is a 2-phase bipolar drive stepper motor driver IC that supports low-voltage drive. The LB1936V's miniature package and minimal number of external components reduces the required mounting area. It also provides high-efficiency motor drive and can reduce circuit current consumption. Since it provides a current detection pin and supports PWM control input, it can be used to implement current chopper control at the system level. The LB1936V is optimal for the stepper motor drive in scanners, digital cameras, and printers.
Features
• Low saturation voltage forward/reverse motor driver (VO sat = 0.25V at IO = 200mA) • Two H-bridge channels • Wide usable voltage range (Allowable voltage range : 2.5V to 9.5V, absolute maximum rating : 10.5V) • Supports PWM input (Low power consumption can be achieved in slow delay mode that uses IN1/IN2 = H/H logic.) • Motor (coil) current detection pin • Built-in thermal shutdown circuit • Miniature package (SSOP16 : 225mil)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage
Maximum output voltage Maximum input voltage Ground pin source current Allowable power dissipation
Symbol VCC max VS max
VOUT max VIN max IGND max
Pd max
Conditions
Per channel When mounted on a circuit board *
Operating temperature Storage temperature
Topr Tstg
* Specified circuit board : 114.3 × 76.1 × 1.6mm3, glass epoxy
Ratings -0.3 to +10.5 -0.3 to +10.5 VS+ VSF -0.3 to +8.0 800 740 -20 to +85 -40 to +150
Unit V V V V mA
mW °C °C
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 5 of this data sheet.
Semiconductor Components Industries, LLC, 2013 September, 2013
90913NK /40407 TI PC B8-5595 No.7233-1/5
Allowable Operating Range at Ta = 25°C
Parameter Supply voltage
Symbol VCC VS
High-level input voltage Low-level input voltage
VIH VIL
LB1936V
Conditions
Electrical Characteristics at Ta = 25°C, VCC = VS = 5V
Parameter
Symbol
Conditions
VCC system power supply current VS system power supply current
Output saturation voltage
Input current Spark killer diode Reverse current Forward voltage
ICC0 ICC1 IS0 IS1 VOUT1
VOUT2
IIN
IS(leak) VSF
IN1 = IN2 = IN3 = IN4 = 0V IN1 = IN3 = 3V, IN2 = IN4 = 0V IN1 = IN2 = IN3 = IN4 = 0V IN1 = IN3 = 3V, IN2 = IN4 = 0V VCC = VS = 3V to 7.5V, VIN = 3V or 0V, IOUT = 200mA (High and low side) VCC = VS = 4V to 7.5V, VIN = 3V or 0V, IOUT = 400mA (High and low side) VIN = 5V
IOUT = 400mA
Ratings 2.5 to 9.5 2.5 to 9.5 2.0 to 7.5 -0.3 to 0.7
Unit V
V V
min -
Ratings typ 0.1 10 0.1 12 0.25
- 0.5
150
max 1
16 1
19 0.4
0.8
200
Unit
μA mA μA mA V
V
μA
30 μA 1.7 V
Package Dimensions
unit:mm (typ) 3178B
5.2 16
9
1
(0.33)
0.65
8 0.22
0.15
4.4 6.4 0.5
Allowable power dissipation, Pd max – W
Pd max – Ta
1.0
Specified circuit board : 114.3 × 76.1 × 1.6mm3 glass epoxy board
0.8 Mounted on the specified circuit board
0.74
0.6
0.4
0.2
0 -20 0
20 40 60 80 100
Ambient temperature, Ta – °C
0.1 (1.3) 1.5max
SSOP16(225mil)
No.7233-2/5
Pin Assignment
LB1936V
VS 1 VCC 2
IN1 3 IN2 4 S-GND 5 IN3 6 IN4 7 VS 8
Block Diagram
LB1936V
Top view
10μF
VCC
30kΩ IN1
30kΩ
30kΩ IN2
30kΩ
Control block
Thermal shutdown
30kΩ IN3
30kΩ
30kΩ IN4
30kΩ
S-GND
LB1936V
16 P-GND 15 RFG1 14 OUT1 13 OUT2 12 OUT3 11 OUT4 10 RFG2 9 (NC)
VS OUT1
Stepping Motor
10μF
OUT2
RFG1 VS
OUT3 OUT4
RFG2 P-GND
No.7233-3/5
LB1936V
Truth Table
IN1 IN2
IN3
IN4
OUT1
OUT2
OUT3
OUT4
LL
off off
LH
LH
HL
-
HL
-
H(*) H(*)
off H H off
LL
off off
LH
LH
- HL - H L
H(*) H(*)
off H H off
L : low, H : high *: The output logic mode when IN1/IN2 = H/H is determined by the immediately preceding IN1/IN2 mode.
The post-switching output modes will be as follows. When switching from (2): (4) When switching from (3): (4)' When switching from (1): Undefined (Either (4) or (4)')
The modes when IN3/IN4 = H/H operate similarly as described below. When switching from (6): (8) When switching from (7): (8)' When switching from (5): Undefined (Either (8) or (8)')
Output mode (1) (2) (3) (4) (4)′ (5) (6) (7) (8) (8)′
Supply current, ICC – mA
ICC -- VCC
20
15
10
5
0 0 1 2 3 4 5 6 7 8 9 10
Supply voltage, VCC – V
250 IIN -- VIN
200
150
100 IN1 to IN4
50
0 01
2 34 56 7
Input voltage, VIN – V
8
9
Output saturation voltage, VO(sat) – V
Supply current, IS – mA
IS -- VS
20
15
10
5
0 0 1 2 3 4 5 6 7 8 9 10
Supply voltage, VS – V
VO(sat) -- IO
0.8
0.7
0.6
0.5
0.4 0.3
High and low side
0.2
0.1
0 0 100 200 300 400 500 600
Output current, IO – mA
No.7233-4/5
Input current, IIN – µA
Sup.