Marantz PMD620 - Recording Format

44
Q304, Q604 : LTC3400BES6
SW 1
GND 2
FB 3
6 V
IN
5 V
OUT
4 SHDN
S6 PACKAGE
6-LEAD PLASTIC SOT-23
TOP VIEW
1.23V
REF
Burst Mode
OPERATION
CONTROL
SHUTDOWN
CONTROL
SLOPE
COMP
PWM
CONTROL
START-UP
OSC
MUX
A
B
A/B
RAMP
GEN
1.2MHz
FB
3400 BD
3
V
OUT
OPTIONAL
SCHOTTKY
L1
4.7μH
5
SW
1
V
IN
SINGLE
CELL
INPUT
6
SHDN
4
GND
2
–
+
g
m
ERROR
AMP
–
+
V
OUT
GOOD
–
–
+
PWM
COMPARATOR
R
C
80k
SHUTDOWN
C
C
150pF
C
P2
2.5pF
R2
604k
1%
(EXTERNAL)
R1
1.02M
1%
(EXTERNAL)
SLEEP
Σ
SYNC
DRIVE
CONTROL
0.35Ω
0.45Ω
2.3V
C
OUT
4.7μF
3.3V
OUTPUT
C
IN
1μF
+
CURRENT
SENSE
C
FF
(OPTIONAL)
BLOCK DIAGRAM