ip4011tf Interpion semiconductor Inc., ip4011tf Datasheet - Page 9

• Manufacturer Part Number: ip4011tf
• Description: 5-ch Motor Drive Ic
• Manufacturer: Interpion semiconductor Inc.

August. 2002
APPLICATION SUMMARY (Continued)
- Tray motor speed control
- Regulator part
Normally, the differential output voltage is 3.1V when the pin20(CTL) is open.
If you want to control differential output voltage of the tray drive part, insert external resistor R and zener
diode ZD as shown in figure 6.
Zener diode ZD is only needed when you want to obtain a precision output voltage,
In other case you only insert an external resistor R.
The amplitude of the output voltage is controlled by pin20(CTL).
IP4011 has a temperature independent voltage source internally.
So in the figure 7, the reference voltage (2.5V) is generated by the internal circuit (bandgab reference).
2.5V
(Rev.5)
R
VCC
Fig7. Regulator
ZD
20
Internal circuit
50k
50k
VCC1
Fig6. Tray motor speed control
3.3K
3.3K
VCC2
WWW.INTERPIONSEMI.COM
External circuit
Control
Speed
+
-
103
5-CH MOTOR DRIVE IC
6
IP4011
Because the power NPN TR Q5 is inserted
internally, there is no need to attach
an external active component.
The output voltage of the regulator is
Calculated as follows
And he capacitor 1uF is used as a ripple
& noise eliminator and should have a good
Temperature characteristics.
Vreo
Level
Shift
=
(1
+
3.3K
3.3K
)
x
2.5
=
5V
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