LB1945H Datasheet, PDF (1/7 Pages) Sanyo Semicon Device – PWM Current Control Type Stepping Motor Driver

Ordering number : ENN*6193
LB1945H
Monolithic Digital IC
LB1945H
PWM Current Control Type Stepping Motor Driver
Preliminary
Features
• PWM current control (external excitation)
• Load current digital selection (1–2, W1–2, and 2 phase
excitation drives possible)
• Built-in upper/lower diode
• Simultaneous ON prevention function (feedthrough
current prevention)
• Built-in thermal shutdown circuit
• Built-in noise canceler
Package Dimensions
unit: mm
3233-HSOP28H
[LB1945H]
15.3
6.2
2.7
28
15
1
0.85
14
0.25
0.8
0.3
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum motor supply voltage
Output peak current
Output continuous current
Logic supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VBB max
I OPEAK
I O max
VCC max
VIN max
VE max
Pd max
Topr
Tstg
tw ≤ 20 µs
Conditions
Ta = 25˚C, with specified substrate*
* Specified substrate: 114.3 × 76.1 × 1.6 mm³, glass epoxy
Allowable Operating Ranges at Ta = 25°C
Parameter
Symbol
Motor supply voltage
VBB
Logic supply voltage
VCC
Reference voltage
VREF
Conditions
SANYO : HSOP28H
Ratings
Unit
30
V
1.0
A
0.8
A
6.0
V
–0.3 to VCC
V
1.0
V
1.9 W
–20 to +90 °C
–55 to +150 °C
Ratings
Unit
10 to 28
V
4.75 to 5.25
V
1.5 to 5.0
V
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
82799RM(KI) No. 6193-1/7