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CS3717A Scheda tecnica(PDF) 1 Page - Cherry Semiconductor Corporation

Il numero della parte CS3717A
Spiegazioni elettronici  1A H-Bridge Stepper Motor Driver
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Produttore elettronici  CHERRY [Cherry Semiconductor Corporation]
Homepage  http://www.cherrycorp.com/
Logo CHERRY - Cherry Semiconductor Corporation

CS3717A Scheda tecnica(HTML) 1 Page - Cherry Semiconductor Corporation

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1
Features
THERMAL
SHUTDOWN
VDD
A
Pulse
Comp In
Sense
OUTA OUTB VDDB
DIRECTION
IN1
IN0
VCC
VREF
Gnd
+
-
+
-
+
-
MONO-
STABLE
105
W
223
W
223
W
6K
W
00
01
10
11
s
Full/Half /Quarter Step
Operation
s
Output Current Up to 1 A
s
Motor Supply Voltage 10V
to 46V
s
Integrated Bootstrap
Lowers Saturation Voltage
s
Built In Protection Diodes
s
Externally Selectable
Current Level
s
Digital or Analog Control
of Output Current Level
s
Thermal Overload
Protection
s
Minimum External
Components
Package Options
1A H-Bridge Stepper Motor Driver
CS3717A
Description
The CS3717A controls and drives
one phase of a bipolar stepper
motor with chopper control of the
phase current. Current levels may
be selected in three steps by means
of two logic inputs which select one
of three current comparators. When
both of these inputs are high the
device is disabled. A separate logic
input controls the direction of cur-
rent flow. A monostable, pro-
grammed by an external RC net-
work, sets the current decay time.
The power section is a full H-bridge
driver with four internal clamp
diodes for current recirculation. An
external connection to the lower
emitters is available for the inser-
tion of a sensing resistor. Two
CS3717AÕs and several external
components form a complete step-
per motor drive subsystem.
The recommended operating ambi-
ent temperature range is from 0 to
70¡C.
The CS3717A is supplied in a 16
lead PDIP.
Block Diagram
16L PDIP
(Internally Fused Leads)
1
OUTB
Pulse
VDD
B
Gnd
VCC
IN1
DIRECTION
Sense
OUTA
VDD
A
Gnd
Gnd
VREF
Comp In
IN0
Gnd
Power Supply Voltage (VDDA, VDDB)............................................................50V
Logic Supply Voltage (VCC)..............................................................................7V
Logic Input Voltage (IN0, IN1, DIRECTION)................................................6V
Comparator Input............................................................................................VCC
Reference Input Voltage..................................................................................15V
Output Current (DC Operation)...................................................................1.2A
Storage Temperature .................................................................Ð55¡C to +150¡C
Operating Junction Temperature.............................................Ð40¡C to +150¡C
Lead Temperature Soldering
Wave Solder(through hole styles only) ............10 sec. max, 260¡C peak
Absolute Maximum Ratings
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
A
Company
¨
Rev. 4/29/99


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