IP4001S 데이터 시트보기 (PDF) - Interpion semiconductor

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IP4001S

5-CH MOTOR DRIVE IC

Interpion semiconductor 

IP4001S

5-CH MOTOR DRIVE IC

APPLICATION SUMMARY

- All mute function using the REF pin

When the all mute function is required, you can use the reference pin as follows;

Fig. 1. All mute function using the reference pin

Pin 23

Above 1.0V

Below 1.0V

Mute

off

on

Muting all channel drivers can be obtained using the

REF (signal reference) pin. The simplified schematic

diagram for reference all mute function is shown in

Fig.1. When the input voltage of the signal reference

pin (pin23) is below 1.0V, the comparator turns Q1 on

and the bias currents of all output drivers are shut

down.

- All mute function using the Mute pin

All mute function can be also obtained using the MUTE pin as follows;

VCC2

7

30k

30k

Bias currents

for output

drivers

Q3

Q2

Pin 7

High

Low

Mute

off

on

As we can see in Fig. 2, if the voltage of the pin7

becomes low (below 0.5V) or open, the bias currents

for all output drivers are shut down.

On the contrary, when the voltage of the pin7 becomes

high (above 2.0V), the drivers operate normally.

Fig. 2. All mute function using the MUTE pin

- Thermal shutdown

The IP4001S has a thermal protection against the

abnormal operation. When the junction temperature

rises above 175OC, and channel drivers are muted.

This makes the junction temperature be continuously

decreased.

When the junction temperature falls below 150OC, all

channel operature again.

Temperature

Above 175 OC

Falls below 150 OC

Hysteresis

mute

on

off

25 OC

Nov. 2004 (Rev. 1)

www.interpionsemi.com

-5-

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