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PDF LB1945H Data sheet ( Hoja de datos )
| Número de pieza | LB1945H | |
| Descripción | PWM Current Control Type Stepping Motor Driver | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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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
30
1.0
0.8
6.0
–0.3 to VCC
1.0
1.9
–20 to +90
–55 to +150
Unit
V
A
A
V
V
V
W
°C
°C
Ratings
10 to 28
4.75 to 5.25
1.5 to 5.0
Unit
V
V
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
1 page  
Sample Application Circuit
LB1945H
L
0.51Ω (1W)
24V
47µF
10µF
5V
0.1µF
Voltage from 1.5 to
5V can be applied.
1 OUTA–
2 OUTA
3 NC
4 NC
5 E1
6 D-GND
7 VBB1
OUTB– 28
OUTB 27
NC 26
NC 25
VBB2 24
E2 23
D-GND 22
LB1945H
8 VCC
9 PHASE1
10 ENABLE1
11 IA 2
12 IA 1
13 VREF1
14 GND
CR 21
PHASE2 20
ENABLE2 19
IB 2 18
IB 1 17
VREF2 16
S-GND 15
L
0.51Ω(1W)
82kΩ
820pF
The fin on the bottom of HSOP-28H package and the fins between pins 7 and 8 and 21 and 22 should be grounded.
No. 6193-5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet LB1945H.PDF ] | |
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