KA3030D View Datasheet(PDF) - Fairchild Semiconductor

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Description

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KA3030D

6-Channel Motor Drive IC

Fairchild Semiconductor 

3. UNDER / HIGH VOLTAGE PROTECTION CIRCUIT

VREF BG

R1

+

R2

−

Mute control

Q

[UNDER VOLTGE PROTECTION]

• [UNDER VOLTGE PROTECTION]

• Normal state: VBGR = 2.5V < V1 = VCC × R2 / (R1 + R2)

• Normal state: VZ = V1 + V2 + V3 + VR

• [HIGH VOLTAGE]

• Mute state: V1 < VBGR (VCC is below 4V)

• Mute state: VCC > VZ (VCC is above 20V)

KA3030D

VCC

V1

V2

V3

VR

Mute control

Q

[HIGH VOLTAGE]

9

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