TEA3718SFP STMicroelectronics, TEA3718SFP Datasheet - Page 14

• 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

Functional blocks
4.1
14/26
Alarm output (TEA3718SP, TEA3718DP and TEA3718SDP)
The ALARM output pin becomes low when the junction temperature reaches T ° C. When an
alarm condition occurs, parts of the supply voltage (dividing bridge R - R
comparator input pin (
an alarm condition is as follows:
●
●
with V
For several Multiwatt packages a common detection can be obtained as in
Figure 16. Alarm detection for power DIP package
R
R
approximate formula: (see also
TH
C
C
> 80 ohms, the output stage is switched off
> 60 ohms, the current in the motor windings is reduced according to the
= threshold of the comparator (V
Figure 16
). Depending on the R
Im
Figure 18
=
V
----------
R
CH
TH
S
, V
–
----------------- -
R
CM
and
V
+
CC
, V
R
C
Figure 19
CL
•
) R = 700 ohms (typical).
C
R
------- -
R
value the behavior of the circuit on
C
S
)
C
) is fed to the
Figure 17
.