Continued from preceding page.
Pin No.
Pin name
I/O
15
RF_CAP
O
LV4901H
Description
Headphone Ripple filter
16
HP_IN1
I
Headphone channel 1 input
17
HP_IN2
I
Headphone channel 2 input
18
HP_STBY
I
Headphone standby mode control
19
PVD2
20
PVD2
21
OUT2+
Channel 2 power system power supply
Channel 2 power system power supply
O Channel 2 high side output
Equivalent Circuit
VD
1kΩ 500Ω
15
5kΩ
30kΩ
HP_GND
VD
PREVD
200Ω
16
20kΩ
VREF
HP_GND
VD
PREVD
200Ω
17
20kΩ
VREF
HP_GND
VD
50kΩ
10kΩ
18
HP_GND
VD
22
BOOT2+
I/O Boot strap terminal, Channe 2 positive supply of
high side
*PREVD : 6V line of Headphone Amp block
21
GND
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