IP9001 View Datasheet(PDF) - Interpion semiconductor
Part Name
Description
MFG CO.
'IP9001' PDF : 32 Pages View PDF
IP9001
4-CH MOTOR DRIVE IC FOR PORTABLE CDP
APPLICATION SUMMARY
1. BTL driver
- Mute function using the MUTE and BRAKE pin (Channel mute)
Mute function for each channels can be obtained using the MUTE pin (pin19,pin21) and BRAKE pin (pin23).
* When the voltage of the pin19 becomes low , the bias currents for CH3,CH4 are shut down and those
corresponding channels are muted. On the contrary, when the voltage of the pin19 becomes high, the channel
drivers operate normally.
* When the voltage of the pin21,23 become high , the bias currents for CH1,CH2 are shut down and those
corresponding channels are muted. On the contrary, when the voltage of the pin21,23 become low, the channel
drivers operate normally.
HIGH
LOW
MUTE34(pin19)
MUTE2(pin21)
CH3,CH4
normal operation
CH3,CH4 shut down
CH2 shut down
CH2 normal operation
Table1. Channel mute & brake
BRAKE1(pin23)
CH1 shut down
CH1 normal operation
- All mute function using the REF pin (Reference all mute)
Muting all channel drivers can be obtained using the REF (signal reference) pin.
* When the input voltage of the signal reference pin (pin16) is below 1.0V, the bias currents of all channel
drivers are shut down.
Above 1.0V
Below 1.0V
VREF(Pin16)
CH1,CH2,CH3,CH4 normal operation
CH1,CH2,CH3,CH4 shut down
Table2. Reference all mute
- Thermal shutdown (TSD)
The IP9001 has a thermal protection.
If the chip temperature rises above 175OC, then the main bias current will be shut down by the protection
circuit. The hysteresis temperature is 25OC
September. 2003 (Rev.0)
Temperature All channel mute
Above 175 OC
on
Falls below 150 OC
off
Hysteresis
25 OC
Table3. Thermal shut down
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