TA7267 View Datasheet(PDF) - Toshiba

Part Name

Description

Manufacturer

TA7267

TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic

Toshiba 

(2) Basic application circuit

TA7267BP

TA7267BP

Figure 3

Note 1: Figure 3 shows the basic application circuit.

Optimum values of the C, R depend on the inherent constant of a motor and parasitic C, R values around the

circuit.

Note 2: Utmost care is necessary in the design of the output, VCC, VM, and GND lines since the IC may be destroyed

by short-circuiting between outputs, air contamination faults, or faults due to improper grounding, or by

short-circuiting between contiguous pins.

Note 3: Be careful when switching the input because rush current may occur.

When switching, stop mode should be entered or current limitation resister R should be inserted.

Note 4: The IC functions cannot be guaranteed when turning power on of off.

Before using the IC for application, check that there are no problems.

(3) Additional diode

i) If the braking operation is so loose, connect a additional diode between each output to GND. (See

Figure 4)

ii) If the back electromotive pulse generated in output coil is so strong. Internally connected back

electromotive suppression diode may be damaged by this pulse. In such a case connect a additional

diode between each output to VCC. (See Figure 5)

TA7267BP

Figure 4

TA7267BP

Figure 5

9

2007-2-28

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