Sony PRS-500 Service Manual page 31

– MAIN Board –
IC401 SN412005RHLR
STAT1 2
STAT2 3
AC 4
V O(OUT)
V I(BAT)
BAT 5
BAT 6
ISET2 7
1 V
280 k
Ω
8
PSEL
9
CE
10
1
V O(LDO)
3.3 V LDO
BA T Short
Circuit
Recovery
Fault
Recovery
10 mA
Q2
Q3
V I(IUSB-SNS)
V I(ISET1)
USB
Charge
Enable
BA T
Charge
Enable
60 mV
V I(BAT)
+
V O(OUT)
200 mV
+
1C - 500 mA
C/S - 100 mA
USB Charge Enable
AC Charge Enable
BA T Charge Enable
500 mA/ 100 mA
Fast PreúCharge
Power Source Selection
21 11
20
Short Circuit Recovery
Q1
1 kΩ
500 Ω
Short Circuit
Recovery
V I(IUSB-SNS)
V I(IUSB-SNS)
+
100 mA / 500 mA
V I(BAT)
+
V O(BAT-REG)
V I(ISET1)
+
Fast PreúCharge
V DPPM
+
Disable-
Sleep
T J
+
T J(REG)
Suspend
Thermal
Shutdown
Charge
Control
Recharge
Timer
and
Display
Logic
Precharge
*
V (SET)
Term
*
Sleep (AC)
*
Sleep (USB)
*
* Signal Deglitched
500 Ω
USB
100 mA /
Charge
500 mA
Enable
V SET
+
V IO(AC)
Charge
AC
Enable
V O(OUT)
+
V O(OUT-REG)
Reference, Bias & UVLO
UVLO
V SET V O(BAT-REG)
Oscillator
V I(BAT)
V O(OUT)
V SET
DPPM
I (DPPM)
Scaling
+
+
1 V
*
V (HTF)
I (TS)
*
V (LTF)
V O(BAT-REG)
V BAT
*
V BAT
V I(ISET1)
V BAT
V AC
V BAT
V USB
PRS-500
19
USBPG
18
ACPG
17 OUT
16 OUT
15 OUT
TMR
14
DPPM
13
TS
12
31