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PCB-POWER
IC907 LM2594M-5.0
4
FEEDBACK
PCB-AUDIO
SMALL SIGNAL
IC901 MC33232D
Zero-current
detection
2.5V
Reference
Timer
one-shot
Overvoltage
detection
1.067Vref
3
Mult
6
GND
CURRENT
1.235V
2.5V
SOURCE
REFERENCE
REGULATOR
BIAS
2.5V
GM
R2
AMP
R1 = 2.5k
ACTIVE
CAPACITOR
OP AMP
3.3V,R2 = 4.2k
5V,R2 = 7.6k
12V,R2 = 21.8k
ADJ,R2 = 0Ω
R1 = OPEN
IC380 UPC1406HA(MS)
INPUT1
4
ATT1
3
OUTPUT1 CONTROL1 OUTPUT2 CONTROL2 STABILIZING
IC390 LA4525
6
CH2 in
CH2
INPUT
5
AMP
BTL IN
R12
RNF2
8
GND
RNF1
R11
CH1
INPUT
7
AMP
CH1 in
8
Vcc
1.4V
28V
5
ZCD
5.3V
1.6V
/1.4V
POR
UVLO
7
Output
16V
TSD
Current
5K
detection
4
CS
2p
1.5V
Vref
Multiplier
1
VFB
Err Amp
Quickstart
2
COMP
ON/OFF
5
220mV
START
UP
COMP.
CURRENT
LIMIT
COMP.
COMP.
LATCH
DRIVER
RESET
FREQ. SHIFT
150kHz
TERMINAL
OSC.
LIMIT
INPUT2
VCC
6
1
ATT2
REGULATOR
2
8
9
7
POWER
Vcc
2
PRE
OUTPUT
DRIVE
AMP
AMP
PRE
OUTPUT
DRIVE
AMP
AMP
B-8
200mV
7
V
IN
0.5A
SWITCH
8
OUTPUT
6
GND
5
GND
3
CH2 out
4
LARGE SIGNAL
GND
1
CH1 out
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