Sony BKPF-L753A User Manual
Page 21
4-3
BKPF-L753A
IC
IC
PCF8574AT (PHILIPS)
NJM5534M (JRC)
NJM5534M(TE2)
MAX742CWP-TE2 (MAXIM)
FB
+
CC
+
AV
+
100/
200
12/
15
VREF
SS
CC
_
FB
_
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
GND
CSH
+
CSL
+
EXT
+
PUMP
PDRV
_
EXT
_
V
+
CSH
_
CSL
_
A-GND
DUAL-OUTPUT, SWITCH-MODE REGURATOR
—TOP VIEW—
INPUT
12/
15
100/
200
AV
+
CC
_
CC
+
CSH
_
CSH
+
CSL
_
CSL
+
FB
_
FB
+
PDRV
SS
V
+
OUTPUT
EXT
_
EXT
+
VREF
: SELECTS VOUTS (
±
15 V/
±
12 V)
: SELECTS OSC FREQUENCY (200 kHz/100 kHz)
: ANALOG SUPPLY VOLTAGE INPUT (
+
5 V)
: INVERTING COMPENSATION CAPACITOR
: STEP-UP COMPENSATION CAPACITOR
: CURRENT SENSE HIGH (INVERTING SECTION)
: CURRENT SENSE HIGH (STEP-UP SECTION)
: CURRENT SENSE LOW (INVERTING SECTION)
: CURRENT SENSE LOW (STEP-UP SECTION)
: INVERTING SECTION FEEDBACK INPUT
: STEP-UP FEEDBACK INPUT
: VOLTAGE INPUT
: SOFT-START TIMING CAPACITOR
: HIGH-CURRENT SUPPLY VOLTAGE INPUT (
+
5 V)
: PUSH-PULL OUTPUT
: PUSH-PULL OUTPUT
: REFERENCE VOLTAGE OUTPUT
SOFT-START
AND
THERMAL
SHUTDOWN
PAMP
OSC
SQUARE
PULSE
12/
15
SELECT
VREF
VREF
7
S
Q
R
+
_
S
Q
R
+
_
EXT
+
17
V
+
13
GND
18
EXT
_
14
PDRV
15
PUMP
16
CSH
_
12
CSL
_
11
CSH
+
20
CSL
+
19
∑
∑
SS
8
FB
+
1
A-GND
3
12/
15
6
FB
_
10
5
100/
200
4
AV
+
2
CC
+
9
CC
_
1
2
3
4
_
+
8
7
6
5
V
EE
V
CC
BALANCE
COMPENSATE
/BALANCE
COMPENSATE
OPERATINAL AMPLIFIER
—TOP VIEW—
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
IN
A1
IN
A2
IN
P0
I/O
P1
I/O
P2
I/O
P3
I/O
SDA
SCL
INT
P7
I/O
P6
I/O
P5
I/O
P4
I/O
13
4
5
6
7
9
10
11
12
15
INT
P0
P1
P2
P3
P4
P5
P6
P7
SDA
A0
A1
A2
SCL
1
2
3
14
INPUT
A0 - A2
SCL
OUTPUT
INT
SDA
INPUT/OUTPUT
P0 - P7
; ADDRESS INPUTS
; SYSTEM CLOCK LINE
; INTERRUPT OUTPUT
; SERIAL DATA LINE
; 8-BIT QUASI-BIDIRECTIONAL I/O PORT
GND
V
DD
C-MOS REMOTE 8-BIT I/O EXPANDER
—TOP VIEW—
INTERRUPT
LOGIC
INPUT
FILTER
POWER-ON
RESET
LP FILTER
SHIFT
REGISTER
I/O
PORTS
8-BIT
INT
13
A0
1
A1
2
A2
3
SCL
14
SDA
15
VDD
16
VSS
8
PCF8574
PCF8574A
P0
4
P1
5
P2
6
P3
7
P4
9
P5
10
P6
11
P7
12
write pulse
read pulse
I
2
C BUS
CONTROL