LB1940T-TLM-H Datasheet, PDF (1/8 Pages) ON Semiconductor – 2-ch H-Bridge Constant Current Driver

Ordering number : EN7232C
LB1940T
Monolithic Digital IC
2-ch H-Bridge Constant Current Driver
http://onsemi.com
Overview
The LB1940T is 2-phase exciter type bipolar stepper motor driver ICs that feature low-voltage, (supporting 3V
battery) and low current operation with low saturation voltage. This IC enable constant-current control of actuators,
and are optimal for driving the actuators of PC peripherals such as USB compatible scanners, FDDs, and printers, as
well as for controlling the shutter, iris, and AF of a digital still camera.
Features
Low-voltage driving
2-power source type:
VS = 1.6 to 7.5V, VDD = 1.9 to 6.5V
Single power source type: VS = VDD = 1.9 to 7.5V
Low saturation output: VO(sat) = 0.3V at IO of 200mA
Constant-current control
Built-in reference voltage (Vref = 0.9V)
Small-sized, low-profile package (TSSOP20; 225mil; thickness (t) = 1.2mm max.)
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter
Symbol
Conditions
Maximum supply voltage
Output applied voltage
Output Current
Input applied voltage
Allowable power dissipation
VB max
VOUT max
IO max
VIN max
Pd max
VS1, VS2, VDD
OUT1, OUT2, OUT3, OUT4
ENA1, ENA2, IN1, IN2, VC
Mounted on a specified board *
Operating temperature
Topr
Storage temperature
Tstg
* Mounted on a Specified board: 114.3mm76.1mm1.6mm, glass epoxy
Ratings
Unit
-0.3 to +10.5
V
-0.3 to +10.5
V
400
mA
-0.3 to +10.5
V
800
mW
-20 to +85
C
-55 to +150
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 8 of this data sheet.
Semiconductor Components Industries, LLC, 2013
December, 2013
D2013HK/D0512HK 20080624-S00002/D2706 MSIM/93004JOIM No.7232-1/8