Sony DSX-GS80 Service Manual page 46

DSX-GS80/M80
IC1053 TPS2543RTER
16 15
CURRENT
SENSE
IN 1 CS
CURRENT LIMIT CURRENT
SELECT LIMIT
UVLO
DM_OUT 2
DP_OUT 3
CDP
DETECTION
LOGIC
CONTROL
ILIM_SEL 4
5 6 7 8
IC1055 NJW4190R-A (TE2)
VREF
–
FB 1
+
DIVIDER
LEVEL
C+ 2
INTERNAL CLK: 1/2
SHIFT
EXTERNAL CLK: 1/4
V+ 3
THERMAL
LEVEL
C– 4 SHUT DOWN
SHIFT
LEVEL
SHIFT
IC1308 NJM2815GM1-51A
REVERSE
CURRENT
PROTECTION
VOUT 1
FEED BACK
OVER CURRENT
VOADJ 2
PROTECTION
SHORT CIRCUIT
PROTECTION
VOLTAGE
LOAD_ADJ 3
CORRECTION
GND 4
46
DISABLE + UVLO + DISCHARGE
OTSD
THERMAL
SENSE
CHARGE 8-MS DEGLITCH
PUMP (FALLING EDGE)
8-MS
DEGLITCH
DRIVER
DCP DIVIDER
DETECTION MODE
AUTO-
DETECTION
8 VOUT
7 ON/OFF
CLOCK
6 CLK
GENERATOR
5 GND
CONT
MAIN
REFERENCE
AMPLIFIER
+
VOLTAGE
+
+
UVLO
+
+
AMPLIFIER FOR
OUTPUT SINK
OUTPUT
CLAMP
THERMAL
SHUTDOWN
14 13
12 OUT
11 DM_IN
10 DP_IN
9 STATUS
IC1306 BD9876BEFJ-E2
LX 1
GND 2
VC 3
SOFT
START
ERROR
FB 4
AMP
1.0 V
8 VIN
ON/OFF
7 CONT
CONTROL
ERROR
6 FAULT
FLAG
+
5 GND
Sony CONFIDENTIAL
For Authorized Servicer
VREF REFERENCE
CURRENT
SENSE AMP
UNDER
VOLTAGE
LOCK OUT
SHUTDOWN
Q SHUTDOWN
S R
CURRENT
COMPARATOR
OSCILLATOR
8 VCC
REGULATOR
7 BST
THERMAL
6 EN
5 SYNC
300 kHz
SYS SET