TEA3718SFP STMicroelectronics, TEA3718SFP Datasheet - Page 19

• Manufacturer Part Number: TEA3718SFP
• Description: IC STEPPER MOTOR DRIVER 20-SOIC
• Manufacturer: STMicroelectronics
• Type: Stepper Motor Controller/Driverr

Specifications of TEA3718SFP

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±1.5A
• Voltage - Load: 10 V ~ 45 V
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 50 V
• Supply Current: 25 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6
6.1
6.2
6.3
Application notes
Motor selection
Some stepper motors are not designed for continuous operation at maximum current. As the
circuit drives a constant current through the motor, its temperature might increase
excessively both at low and high speed operation.
Also, some stepper motors have such high core losses that they are not suited for switch
mode current regulation.
Unused inputs
Unused inputs should be connected to proper voltage levels in order to get the highest noise
immunity.
Interference
As the circuit operates with switch mode current regulation, interference generation
problems might arise in some applications. A good measure might then be to decouple the
circuit with a 15 nF ceramic capacitor, located near the package between power
line V
short as possible. This applies also to the lead between the sensing resistor R
See
Section 4: Functional blocks
S
and ground. The ground lead between R
.
S
, C
C
and circuit GND should be kept as
Application notes
S
and point S.
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