Pioneer PDP-507XD Service Manual page 211

5
LTC3412EFE (MAIN ASSY: IC4103)
• Regulator IC
Pin Arrangement (Top view)
SVIN
PGOOD
ITH
VFB
SYNC/MODE
RUN/SS
SGND
Block Diagram
0.8V
4
VFB
0.74V
RUN/SS 7 RUN
0.86V
2
PGOOD
Pin Function
No. Pin Name I/O
1 SVIN I Signal Input Supply.
2 PGOOD O Power Good Output.
−
3 ITH Error Amplifier Compensation Point.
Feedback Pin.
4 VFB I
5 RT I Oscillator Resistor Input.
Mode Select and External Clock
6 SYNC/MODE I
Synchronization Input.
7 RUN/SS I Run Control and Soft-Start Input.
−
8 SGND Signal Ground.
5
6
1 16 PVIN
2 15
SW
3 14 SW
4 13
PGND
PGND
RT 5 12
6 11
SW
7 10
SW
8 9 PVIN
SVIN SGND ITH
1 8 3
VOLTAGE
COMPENSATION
REFERENCE
BCLAMP
ERROR
AMPLIFIER
+
BURST
V
SYNC/MODE
COMPARATOR
OSCILLATOR
5
RT
Pin Function
6
7
PMOS CURRENT
COMPARATOR
SLOPE
RECOVERY
SLOPE
COMPENSATION
NMOS CURRENT
COMPARATOR
LOGIC
REVERSE
CURRENT
COMPARTOR
6
SYNC/MODE
No. Pin Name I/O
9 PVIN I
−
10 SW
−
11 SW
−
12 PGND
−
13 PGND
−
14 SW:
−
15 SW
16 PVIN I
PDP-507XD
7
8
PVIN PVIN
9 16
P-CH
SW
10
SW
11
SW
14
SW
15
N-CH
12 PGND
13 PGND
Pin Function
Power Input Supply
Switch Node Connection to the Inductor.
Switch Node Connection to the Inductor.
Power Ground
Power Ground
Switch Node Connection to the
Inductor.
Switch Node Connection to the Inductor.
Power Input Supply
8
A
B
C
D
E
F
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