Pioneer PDP-427XD - Page 205

PDP-427XD
205
5678
56
7
8
C
D
F
A
B
E
• Regulator IC
LTC3412EFE (MAIN ASSY: IC4103)
Block Diagram
Pin Arrangement (Top view)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SVIN
PGOOD
ITH
VFB
RT
SYNC/MODE
SGND
PVIN
PGND
SW
PVIN
SW
SW
PGND
SW
RUN/SS
1
4
2
7
5
8 3
9
16
OSCILLATOR
LOGIC
6
0.74V
0.86V
RUN
15
14
11
10
SGND
BCLAMP
RUN/SS
PGOOD
SYNC/MODE
PGND
PGND
SW
SW
SW
SW
13
12
SYNC/MODE
+
V
0.8V
SVIN ITH
VOLTAGE
REFERENCE
SLOPE
COMPENSATION
RECOVERY
PMOS CURRENT
COMPARATOR
SLOPE
COMPENSATION
BURST
COMPARATOR
ERROR
AMPLIFIER
VFB
NMOS CURRENT
COMPARATOR
P-CH
N-CH
REVERSE
CURRENT
COMPARTOR
PVIN PVIN
RT
Pin Function
−
−
−
−
−
−
No.
Pin Name
I/O Pin Function No. Pin Name I/O Pin Function
1 SVIN I Signal Input Supply. 9 PVIN I Power Input Supply
2 PGOOD O Power Good Output. 10 SW
Switch Node Connection to the Inductor.
3 ITH
−
Error Amplifier Compensation Point.
11 SW
Switch Node Connection to the Inductor.
4 VFB I
Feedback Pin.
12 PGND Power Ground
5RTIOscillator Resistor Input. 13 PGND Power Ground
6 SYNC/MODE I
Mode Select and External Clock
Synchronization Input.
14 SW:
Switch Node Connection to the
Inductor.
7 RUN/SS I Run Control and Soft-Start Input. 15 SW
Switch Node Connection to the Inductor.
8 SGND
−
Signal Ground.
16 PVIN I Power Input Supply