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PDF A3973 Data sheet ( Hoja de datos )
| Número de pieza | A3973 | |
| Descripción | Dual DMOS Full-Bridge Microstepping PWM Motor Driver | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de A3973 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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A3973
Dual DMOS Full-Bridge Microstepping PWM Motor Driver
Discontinued Product
This device is no longer in production. The device should not be
purchased for new design applications. Samples are no longer available.
Date of status change: November 1, 2010
Recommended Substitutions:
For existing customer transition, and for new customers or new appli-
cations, refer to the A3992.
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
Free Datasheet http://www.datasheet4u.com/
1 page  
A3973
Dual DMOS Full-Bridge
Microstepping PWM Motor Driver
ELECTRICAL CHARACTERISTICS at TA = +25°C, VBB = 35 V, VDD = 5.0 V, VS = 0.5 V,
fPWM < 50 kHz (unless otherwise noted).
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max.
Load Supply Voltage Range
VBB
Operating
15 — 35
During sleep mode
0 — 35
Logic Supply Voltage Range
VDD
Load Supply Current
IBB
Operating
fPWM < 50 kHz
Operating, outputs disabled
4.5 5.0 5.5
— — 8.0
— — 6.0
Logic Supply Current
IDD
Sleep or idle mode
fPWM < 50 kHz
Outputs off
Idle mode (D0 = 1, D18 = 0)
— — 20
— — 12
— — 10
— — 1.5
Sleep mode
Output Drivers
Output Leakage Current
IDSS
Output On Resistance
rDS(on)
VOUT = VBB
VOUT = 0 V
Source driver, IOUT = –1.0 A
Body Diode Forward Voltage
VF
Sink driver, IOUT = 1.0 A
Source diode, IF = 1.0 A
Control Logic
Sink diode, IF = 1.0 A
Logic Input Voltage
Logic Input Current
VIN(1)
VIN(0)
IIN(1)
VIN = 2.0 V
OSC Input Frequency Range
IIN(0)
fOSC
VIN = 0.8 V
Divide by one
(D0 =1, D13 = 0, D14 = 1)
— — 100
— <1.0 50
— <-1.0 -50
— 0.54 0.60
— 0.54 0.60
— — 1.2
— — 1.2
2.0 — —
— — 0.8
— <1.0 20
— <-2.0 -20
2.5 — 6.0
OSC Input Duty Cycle
—
40 — 60
Input Hysterisis
∆VIN
0.20 — 0.40
Units
V
V
V
mA
mA
µA
mA
mA
mA
µA
µA
µA
Ω
Ω
V
V
V
V
µA
µA
MHz
%
V
continued next page ...
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
4
Free Datasheet http://www.datasheet4u.com/
5 Page 
A3973
Dual DMOS Full-Bridge
Microstepping PWM Motor Driver
B Package, 24-Pin DIP
24
A
30.10
+0.25
–0.64
6.35
+0.76
–0.25
10.92
+0.38
–0.25
0.38
+0.10
–0.05
7.62
12
1.27 MIN
1.52
+0.25
–0.38
0.018
0.46 ±0.12
5.33 MAX
For Reference Only
(reference JEDEC MS-001 BE)
3.30
+0.51
–0.38
Dimensions in millimeters
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
2.54 A Terminal #1 mark area
LB Package, 24-Pin SOICW
15.40±0.20
24
4° ±4
0.27
+0.07
–0.06
24
2.20
7.50±0.10 10.30±0.33
A
0.84
+0.44
–0.43
9.60
12
24X
0.10 C
SEATING C
PLANE
0.25
SEATING PLANE
GAUGE PLANE
12
0.65
B PCB Layout Reference View
1.27
0.41 ±0.10
1.27 2.65 MAX
0.20 ±0.10
For reference only
Pins 6 and 7, and 18 and 19 internally fused
Dimensions in millimeters
(Reference JEDEC MS-013 AD)
Dimensions exclusive of mold flash, gate burrs, and dambar protrusions
Exact case and lead configuration at supplier discretion within limits shown
A Terminal #1 mark area
B Reference pad layout (reference IPC SOIC127P1030X265-24M)
All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary
to meet application process requirements and PCB layout tolerances
Copyright ©2000-2008, Allegro MicroSystems, Inc.
The products described here are manufactured under one or more U.S. patents or U.S. patents pending.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to per-
mit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the
information being relied upon is current.
Allegro’s products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the
failure of that life support device or system, or to affect the safety or effectiveness of that device or system.
The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use;
nor for any infringement of patents or other rights of third parties which may result from its use.
For the latest version of this document, visit our website:
www.allegromicro.com
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
10
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet A3973.PDF ] | |
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