KA3031 Fairchild Semiconductor, KA3031 Datasheet - Page 13

• Manufacturer Part Number: KA3031
• Description: Motor / Motion / Ignition Controllers & Drivers Motor Driver 4Ch BTL+2Ch DC
• Manufacturer: Fairchild Semiconductor
• Type: Motor Drive ICr

Specifications of KA3031

• Operating Supply Voltage: 4.5 V to 16 V
• Mounting Style: SMD/SMT
• Package / Case: QFPH-48
• Operating Temperature: - 35 C to + 85 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Application Information
1. REFERENCE INPUT & ALL MUTE FUNCTION
Pin 45 (REF) can use the reference Input pin or the all mute signal input pin.
• Reference input
• All mute input
2. SEPARATED CHANNEL MUTE FUNCTION
These pins are used for individual channel mute operation.
• When the mute pins (pin19, 20, 21 and 22) are high level, the mute circuits are activated so that the output circuit is muted.
• When the voltage of the mute pins (pin19, 20, 21 and 22) are low level, the mute circuit is stopped and output circuits
• If the chip temperature rises above 175 C, then the thermal shutdown (TSD) circuit is activated and the output circuits are
3. PROTECTION FUNCTION
• Thermal shutdown (TSD)
• Under voltage lockout (UVLO) and over voltage protection (OVP)
In the case of the reference input pin, you must keep the applied voltage range between 2[V] and 6.5[V] at
V
When using the all mute function pin, applied voltage condition is as follows.
operate normally.
muted.
- Mute 1 (pin 19)-CH1 mute control input pin.
- Mute 2 (pin 20)-CH2 mute control input pin.
- Mute 3 (pin 21)-CH3 mute control input pin.
- Mute 4 (pin 22)-CH4 mute control input pin.
If the chip temperature rises above 175 C, then the thermal shutdown (TSD) circuit is activated and the output circuit is will
be mute. The TSD circuit is temperature hysteresis 25 C.
It is designed to mute-operate the internal bias by the function of UVLO and OVP, when the power supply voltage falls
below 3.5[V] or above 20[V].
CC
= 8[V].
All mute on voltage
All mute off voltage
Below 0.5[V]
Above 2[V]
13
Mute function operation
Normal operation
KA3031