YDA135 Datasheet, PDF (7/22 Pages) YAMAHA CORPORATION – STEREO 5W-20W DIGITAL AUDIO POWER AMPLIFIER CONTROLLER

YDA135
PROT (Pin No.6)
PROT is the warning signal output terminal that has both overcurrent and high temperature detection functions.
The terminal outputs "H" level when either function detects an abnormality state.
When the warning signal (PROT terminal="H" level) is outputted by abnormality state detection, this IC keep the
warning signal output after return to normal state.
The warning signal is cancelled by changing the state of SLEEP terminal to "H" level or turning off the power supply.
TEST (Pin No.9)
This is the terminal for testing. Connect to VSSR terminal.
Mode setting and error detection
L channel
R channel
Mode
H ＊ ＊ ＊ ＊ H L H L L L ＊ ＊ H L H L L L L Sleep mode
L H P ＊ ＊ H L H L L L ＊ ＊ H L H L L L X Mute mode
L H F ＊ ＊ H L H L L L ＊ ＊ H L H L L L H Mute mode / High temperature detection
L L P P P X X X X X X P P X X X X X X X 2 channel output mode
L L F P P X X X X X X P P X X X X X X H 2 channel output mode / High temperature detection
L L P F P X X X X X X P P X X X X X X H 2 channel output mode / L channel overcurrent detection
L L P P F X X X X X X P P X X X X X X H 2 channel output mode / L channel overcurrent detection
L L P P P X X X X X X F P X X X X X X H 2 channel output mode / R channel overcurrent detection
L L P P P X X X X X X P F X X X X X X H 2 channel output mode / R channel overcurrent detection
Note:
1) HMOS_L, LMOS_L, HMOS_R and LMOS_R terminal mean outputs of Power MOSFET that are positive at left
channel side, negative at left channel side, positive at right channel side, and negative at right channel side
respectively.
"L" means that the terminals are pulled down by the resistor that is used in the "Example of application circuit".
"X" means pulse outputting state.
2) "X" of PROT terminal means that is in state of either "L" or "H" by the previous state.
3) "P" of SENSE* and TPP terminals means normal state (Pass), and "F" means abnormal state (Fail).
4) "X" of output terminals such as HP_L, HN_L terminals means pulse outputting state.
5) "*" means "Don't care".
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