TDA7272A datasheet(11/16 Pages) STMICROELECTRONICS

Part #	TDA7272A

Description	HIGH PERFORMANCE MOTOR SPEED REGULATOR

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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- fast forward, by putting a resistor. In this

case it is necessary that also at the higher

speed for the duty cycle to be significately

less than 1 (see value of RT,CT on pin 2,

pin 3 sections).

Fig. 19 shows the function controlled with a

µP.

Pin 18

Right function control. The voltages applied to this

pin and to pin 19 determine the function, as

showed in the table.

The typical value of the threshold (L-H) is 1.2 V.

Pin 19

Left function control. (see pin 18 sect).

Pin 20

Right speed adjustment. (see pin 17 sect).

Figure 18.

Figure 19.

CONDITION

OUTPUT FUNCTION

OUTPUT VOLT AGE

Pin 18

Pin 19

Pin 12

Pin 9

STOP

LEFT

RIGHT

OPEN

LOW

REG

HIGH IMP.

LOW

REG

LOW

HIGH IMP.

Figure 20: Typical application.

TDA7272A

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TDA7272A Datasheet(PDF) 11 Page - STMicroelectronics