SRS-GD50iP
17
• IC Block Diagrams
– MAIN Board –
IC101 TS3USB221RSER
IC105, 510 SI-8008TM-TLS
1D+
D+
1
8
S
VCC
9
D–
7
1D– 2
OE
6
5
10
CONTROL
SWITCH
2D+ 3
2D–
GND
4
OVER
CURRENT
PROTECTOR
LATCH
&
DRIVER
OVER HEAT
PROTECTOR
REGULATOR
ON/OFF
SOFT
START
+
–
+
–
RESET
VREF
COMPARATOR
ERROR AMP
OSC
1
VIN
2
SW OUT
3
GND
4
ADJ
5
SOFT
ST
AR
T
VOUT
VCC
VIN3 (MUTE)
1
2
3
4
5
6
7
GND
BUFFER
VIN1
VIN2
SW1
SW2
8
BIAS
VDD 2
GND 1
+
–
VREF
CD
3
OUT
4
IC106, 107 NJM2521V (TE2)
IC108, 503 PST3660UL