FAN8038B 데이터 시트보기 (PDF) - Fairchild Semiconductor

부품명

상세내역

일치하는 목록

FAN8038B

4-Channel Motor Drive IC

Fairchild Semiconductor 

FAN8038B(KA3038)

Application Information

1. Mute Function

• When The BRAKE Pin is low is normal opration (high is CH1 mute on).

• When The Mute2 Pin is low is normal opration (high is CH2 mute on).

• When The Mute34 Pin is high is normal opration (low is CH3,4 mute on).

2. Vref Drop Mute (Figure 1)

• When the Voltage of the mute pin is above 1V, the mute circuit is stopped and the output circuit is.

VCC

VCC

VREF

CH Bias Block

Hysteresis

2

CH Bias Block

Q1 1

Figure 1. VREF Drop MUTE Circuit

Figure 2. TSD Circuit

3. Thermal Shutdown(Figure 2)

• If the chip temperature rises above 150°C, then the thermal shutdown (TSD) circuit is activated and the output circuit will

be mute.

4. H-bridge Driver (4-Channels)

Driver input resistance is 10kΩ of CH1, CH3, CH4 and input resistance of CH2 is 7.5kΩ.

Driver gain can obtain under -mentioned

CH1, 3, 4:

CH2

GV = 20log ------5---5----K--------

11K + R

GV = 20log -----1---1----0---K-------

7.5K + R

R is External resistance.

10

Share Link: