LV4920H Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
Fabricante
LV4920H Datasheet PDF : 12 Pages
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LV4920H
2.3 Power Down Sequence
The power shut-down sequence must be controlled by timing as shown below (PWM=BD mode) to minimize
impulse noise.
3. Protection Circuits
The LV4920H has full complement of built-in protection circuits: overcurrent protection, thermal protection, and low
power supply voltage protection circuits.
3.1 Overcurrent protection circuit
The overcurrent protection circuit protects the output transistors by detecting current that exceeds a predetermined
value due to load shorting, shorting to power, shorting to ground, etc.
When the protection circuit is activated, both the high- and low-side output transistors are turned off and the
output is placed in a high-impedance state.
The figure below shows the waveform of current that flows when load shorting (1Ω) occurs.
+3.8A
-3.8A
Overcurrent hold time (approx. 20µs)
No.A0989-9/12
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