LV4924VH 데이터 시트보기 (PDF) - SANYO -> Panasonic

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LV4924VH

Class-D Audio power Amplifier Power cell BTL 10W×2ch

SANYO -> Panasonic 

LV4924VH

Sequence at power OFF

To reduce the pop noise, turn OFF power supply while controlling in the following timing (PWM=BD mode).

Protection Circuit

LV4924VH incorporates the over-current protection circuit, thermal protection circuit, supply voltage drop protection

circuit and output offset detection protection circuit. Activation of any one of these circuits causes the SOS output pin

to become active and thus "L".

Over-current protection circuit

This circuit is a protection circuit* to protect the output transistor from the over-current and compatible with any mode

of lightning, ground fault, and load short-circuit.

Protection is done when the detection current value (about 6A) set inside IC is reached, forcing the output transistor to

remain OFF for about 20μs. After forced OFF, the transistor returns automatically to the normal operation and performs

protection again if the over-current continues to flow.

Output Current

Control

Self-recovery &

Operation Normal Operation

Internal Control Signal

* The over-current protection circuit functions only to avoid the abnormal state, such as output short-circuit, etc.,

temporarily, and does not guarantee to offer the protection to prevent damage to IC.

No.A1997-8/15

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