BD5446EFV Rohm, BD5446EFV Datasheet - Page 20

• Manufacturer Part Number: BD5446EFV
• Description: Class-D Speaker Amplifier
• Manufacturer: Rohm

© 2010 ROHM Co., Ltd. All rights reserved.
BD5446EFV
www.rohm.com
4)Output short protection(Short to the power supply)
5) Output short protection(Short to GND)
This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is short-circuited to
the power supply due to abnormality.
This IC has the PWM output short protection circuit that stops the PWM output when the PWM output is short-circuited to
GND due to abnormality.
Detecting condition - It will detect when MUTE pin is set High and the current that flows in the PWM output pin
Releasing method - ①After the MUTEX pin is set Low once, the MUTEX pin is set High again.
Detecting condition - It will detect when MUTE pin is set High and the current that flows in the PWM output terminal
Releasing method – ①After the MUTEX pin is set Low once, the MUTEX pin is set High again.
OUT1P (50, 51pin)
OUT1N (43, 44pin)
OUT2P (31, 32pin)
OUT2N (38, 39pin)
OUT1P (50, 51pin)
OUT1N (43, 44pin)
OUT2P (31, 32pin)
OUT2N (38, 39pin)
ERROR (24pin)
MUTEX（13pin）
ERROR (24pin)
Over current
MUTEX(13pin)
Over current
②Turning on the power supply again.
becomes 10A(TYP.) or more. The PWM output instantaneously enters the state of HiZ-Low if
detected, and IC does the latch.
②Turning on the power supply again.
becomes 10A(TYP.) or more. The PWM output instantaneously enters the state of HiZ-Low if
detected, and IC does the latch.
10A(TYP.)
Short to GND
10A(TYP.)
Short to VCC
１μsec(TYP.)
１μsec(TYP.)
Release from short to VCC
PWM out ： IC latches with HiZ-Low.
PWM out ： IC latches with HiZ-Low.
Release from short to
20/30
GND
Latch release
Latch release
Released from latch state.
Released from latch state.
t
t
t
t
t
t
t
t
www.DataSheet4U.com
Technical Note
2010.05 - Rev.B