TCA 3727 Infineon Technologies, TCA 3727 Datasheet - Page 4

• Manufacturer Part Number: TCA 3727
• Manufacturer: Infineon Technologies

Specifications of TCA 3727

• Packages: P-DIP-20
• Ipeak: 2 x 1.0 A
• Inhibit: Y
• Iq (typ): 20.0 µA
• Mounting: THT
• Technology: Bipolar

Table 1
Pin No.
9 (11)
12 (14)
11, 14
(13, 16)
13 (15)
17 (21)
18 (22)
1) TCA 3727 G only
Table 2
typical
IX1
H
H
L
L
Data Sheet
1)
I
1)
1)
1)
1)
1)
max
IX0
H
L
H
L
with
Pin Definitions and Functions (cont’d)
Digital Control Inputs IX0, IX1
R
Function
Supply voltage; block to ground, as close as possible to the IC, with
a stable electrolytic capacitor of at least 10 F in parallel with a
ceramic capacitor of 220 nF.
Logic supply voltage; either supply with 5 V or connect to +
across a series resistor. A Z-diode of approx. 7 V is integrated. In both
cases block to ground directly on the IC with a stable electrolytic
capacitor of 10 F in parallel with a ceramic capacitor of 100 nF.
Push-pull outputs Q22, Q21 for phase 2 with integrated free
wheeling diodes.
Resistor
Inhibit input; the IC can be put on standby by low potential on this
pin. This reduces the current consumption substantially.
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.
sense
Phase Current
0
1/3
2/3
I
max
I
I
max
max
= 1 , 750 mA
R
2
for sensing the current in phase 2.
4
Example of Motor Status
No current
Hold
Set
Accelerate
Rev. 2.0, 2004-10-01
TCA 3727
V
S