FAN8033 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FAN8033

6-Channel Motor Drive IC

Fairchild Semiconductor 

FAN8033

Application Information

1. REFERENCE INPUT

Pin 45 (REF) can use the reference Input pin .

• Reference input

In the case of the reference input pin, you must keep the applied voltage range between 2[V] and 6.5[V] at VCC = 8[V].

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

operate normally.

• If the chip temperature rises above 175°C, then the thermal shutdown (TSD) circuit is activated and the output circuits are

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.

3. PROTECTION FUNCTION

• Thermal shutdown (TSD)

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.

• Under voltage lockout (UVLO) and over voltage protection (OVP)

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].

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