Sony NWZA816P - DIGITAL MEDIA PLAYER/MP3 PLAYER Service Manual page 29

IC901 MAX8677AETG
25 24
/DONE 1
DC 2
DC 3
CURRENT-LIMITED
VOLTAGE REGULATOR
/CEN 4
PEN1 5
CURRENT
PEN2 6
SETTING
7 8 9
IC903 MAX1557ETB
IN 1
BIAS
GND 2
CURRENT
SENSE
REFERENCE
1.25V
SLOPE
COMPARATOR
SS 3
ERROR
AMPLIFIER
OUT 4
XSHDN 5
23 22
LITHIUM BATTERY
INPUT
CHARGER
SYSTEM
VOLTAGE
LOAD SWITCH
MONITOR
INPUT LIMITER &
CHARGER THERMAL
REGULATION
0.675V
CURRENT-LIMIT
COMPARATOR
PWM
AUTO SKIP
PWM
CONTROL
COMPARATOR
CLOCK
1MHZ
SKIP-OVER
ENTER SKIP/
SR OFF
11
NW-A805/A806/A808/NWZ-A815/A816/A818
21 20
19
18 BAT
17
BAT
16 USB
15 USB
14 TSET
13 USUSS
10 11 12
OUTPUT
10 D1
VOLTAGE
SELECTOR
SHORT-CIRCUIT
PROTECTION
9 INP
DRIVER
8
LX
7 PGND
ZERO-CROSS
DETECT
6 D2
29