Sony HKDV-900, Maintenance Manual

Page: 53 / 88

4-3
HKDV-900
A0
IN
A1
IN
A2
IN
GND
1
2
3
4
8
7
6
5
V
CC
WP
IN
SCL
IN
SDA
I/O
64K-BIT SERIAL INTERFACE EEPROM
TOP VIEW
INPUTS
A0 - A2
SCL
WP
INPUT/OUTPUT
SDA
: ADDRESS
: SERIAL CLOCK
: WRITE PROTECT
: SERIAL DATA
HN58X2464FPSRZ (HITACHI)
1
2
3
4
5
6
7
8
EXTV
CC
SYNC
RUN/SS
FCB
I
TH
S.GND
V
OSENSE
V
PROG
16
15
14
13
12
11
10
9
V
IN
TK
SW
TG
BOOST
INTV
CC
BG
P.GND
SWTCHING REGULATOR
—TOP VIEW—
INPUTS
BOOST
EXTV
CC
FCB
I
TH
RUN/SS
SW
SYNC
TK
V IN
V
OSENSE
V
PROG
OUTPUTS
BG
INTV
CC
TG
: TOPSIDE FLOATING DRIVER SUPPLY
: INTV
CC
SWITCH
: FORCED CONTINUOUS
: ERROR AMPLIFIER COMPENSATION POINT
: RUN CONTROL/SOFT START
: SWITCH NODE
: SYNC
: TOP MOSFET KELVIN SENSE
: MAIN POWER SUPPLY
: OUTPUT VOLTAGE SENSE
: OUTPUT VOLTAGE PROGRAMMING
: BOTTOM GATE DRIVE
: INTERNAL 5.2 V REGULATOR
: TOP GATE DRIVE
SWITCH
LOGIC/
DROPOUT
COUNTER
_
+
+
_
OV
+
_
B
TA
x 11
_
+
BA
x 11
+
_
I
2
_
+
CL
+
_
F
1.19 V
1.19 V
6 V
4.7 V
1 u A
3 u A
1.28 V
0.6 V
0.6 V
0.5 V
SLEEP
V
FB
gm=1m Z
_
+
EA
_
+
SHUTDOWN
OVERVOLTAGE
FCNT
REV
+_
+
_
1.19 V
REF
5.2 V
LDO REG
8
S.GND
6
RUN/SS
3
I
TH
5
V
PROG
7
V
OSENSE
+
_
I
1
0.6 V
I
THB
+_
S
R
Q
OSC
TOP
2
SYNC
4
FCB 1
EXTV
CC
TK
15
BOOST
12
TG
13
SW
14
INTV
CC
11
BG
10
P.GND
9
V
IN
16
LTC1625CGN-E2 (LINEAR TECH)
IC