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PDF TCA3727G Data sheet ( Hoja de datos )
| Número de pieza | TCA3727G | |
| Descripción | 2-Phase Stepper-Motor Driver | |
| Fabricantes | Siemens Semiconductor | |
| Logotipo |  |
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2-Phase Stepper-Motor Driver
TCA 3727
Overview
Features
• 2 x 0.75 amp. / 50 V outputs
• Integrated driver, control logic and current control
(chopper)
• Fast free-wheeling diodes
• Max. supply voltage 52 V
• Outputs free of crossover current
• Offset-phase turn-ON of output stages
• Z-diode for logic supply
• Low standby-current drain
• Full, half, quarter, mini step
Bipolar IC
P-DIP-20-6
P-DSO-24-3
Type
TCA 3727
TCA 3727 G
Ordering Code
Q67000-A8302
Q67000-A8335
Package
P-DIP-20-6
P-DSO-24-3
Description
TCA 3727 is a bipolar, monolithic IC for driving bipolar stepper motors, DC motors and
other inductive loads that operate on constant current. The control logic and power
output stages for two bipolar windings are integrated on a single chip which permits
switched current control of motors with 0.75 A per phase at operating voltages up to
50 V.
Semiconductor Group
1
1998-02-01
1 page  
TCA 3727
Pin Definitions and Functions (cont’d)
Pin No.
Function
17 (21) 1)
Inhibit input; the IC can be put on standby by low potential on this
pin. This reduces the current consumption substantially.
18 (22) 1)
Input phase 2; controls the current flow through phase winding 2. On
H-potential the phase current flows from Q21 to Q22, on L potential in
the reverse direction.
1) TCA 3727 G only
Semiconductor Group
5
1998-02-01
5 Page 
TCA 3727
Characteristics (cont’d)
VS = 40 V; VL = 5 V; – 25 °C ≤ Tj ≤ 125 °C
Parameter
Symbol
Limit Values
min. typ. max.
Unit Test Condition
Standby Cutout (inhibit)
Threshold
Threshold
Hysteresis
VInh
(L→H)
2
34
V–
VInh 1.7 2.3 2.9 V –
(H→L)
VInhhy
0.3 0.7 1.1 V –
Internal Z-Diode
Z-voltage
VLZ 6.5 7.4 8.2 V IL = 50 mA
Power Outputs
Diode Transistor Sink Pair
(D13, T13; D14, T14; D23, T23; D24, T24)
Saturation voltage
Saturation voltage
Reverse current
Forward voltage
Forward voltage
Vsatl – 0.3 0.6 V IQ = – 0.5 A
Vsatl – 0.5 1 V IQ = – 0.75 A
IRl – – 300 µA VQ = 40 V
VFl – 0.9 1.3 V IQ = 0.5 A
VFl – 1 1.4 V IQ = 0.75 A
Diode Transistor Source Pair
(D11, T11; D12, T12; D21, T21; D22, T22)
Saturation voltage
Saturation voltage
Saturation voltage
Saturation voltage
Reverse current
Forward voltage
Forward voltage
Diode leakage current
VsatuC
VsatuD
VsatuC
VsatuD
IRu
VFu
VFu
ISL
–
–
–
–
–
–
–
–
0.9 1.2 V IQ = 0.5 A;
charge
0.3 0.7 V IQ = 0.5 A;
discharge
1.1 1.4 V IQ = 0.75 A;
charge
0.5 1
V IQ = 0.75 A;
discharge
– 300 µA VQ = 0 V
1 1.3 V IQ = – 0.5 A
1.1 1.4 V IQ = – 0.75 A
12
mA IF = – 0.75 A
Semiconductor Group
11
1998-02-01
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet TCA3727G.PDF ] | |
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