IP4001S-TF INTERPION [Interpion semiconductor], IP4001S-TF Datasheet - Page 5

• Manufacturer Part Number: IP4001S-TF
• Description: 5-CH MOTOR DRIVEIC
• Manufacturer: INTERPION [Interpion semiconductor]

- Thermal shutdown
The IP4001S has a thermal protection against the
abnormal operation. When the junction temperature
rises above 175
This makes the junction temperature be continuously
decreased.
When the junction temperature falls below 150
channel operature again.
Nov. 2004
- All mute function using the REF pin
- All mute function using the Mute pin
APPLICATION SUMMARY
Fig. 1. All mute function using the reference pin
When the all mute function is required, you can use the reference pin as follows;
All mute function can be also obtained using the MUTE pin as follows;
Fig. 2. All mute function using the MUTE pin
7
30k
30k
(Rev. 1)
O
C, and channel drivers are muted.
VCC2
Q2
Q3
Bias currents
for output
drivers
www.interpionsemi.com
5-CH MOTOR DRIVE IC
O
C, all
IP4001S
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.
As we can see in Fig. 2, if the voltage of the pin7
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.
Above 1.0V
Below 1.0V
Falls below 150
Pin 7
High
Low
Above 175
Pin 23
Temperature
Hysteresis
O
C
O
C
Mute
off
on
Mute
off
on
25
mute
on
off
O
C
- 5 -