Philips AZ7381 Service Manual page 16
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Also See for AZ7381:
- Service manual (28 pages) ,
- User manual (9 pages) ,
- Instructions for use manual (22 pages)
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MPC1825A – DC/DC CONVERTER AND BATTERY CHARGER
Pin
Name
Direction
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1
DCIN
+DC
→ DC/DC converter
2
RS
→ DC/DC converter
3
RF2
→ DC/DC converter
4
INM2
DC/DC converter →
5
RF1
→ DC/DC converter
6
INM1
→ DC/DC converter
7
INP1
→ DC/DC converter
8
DTC
DC/DC converter →
9
VREF
→ DC/DC converter
10
REFIN
→ DC/DC converter
11
BATIN
DC/DC converter → µP
12
LOBAT
DC/DC converter → servo driver
13
CKOUT
DC/DC converter → µP
14
RSTB
15
SYCSL
GND
16
SYNC
GND
µP → DC/DC converter
17
PCB
µP → DC/DC converter
18
CHGON
19
GND
GND
DC/DC converter → +µP
20
VCPU
21
VOUT3
not connected
22
SW
+A
DC/DC converter →
23
VDO
24
C2L
external connection
25
C1L
external connection
26
C1H
external connection
27
C2H
external connection
DC/DC converter → VG
28
VG
DC/DC converter →
29
VOUT1
→ DC/DC converter
30
VIN
DC/DC converter →
31
DCDTB
32
CHGOUT
not connected
DC/DC converter → battery (-)
33
BATM
34
CHGFIL
external connection
DC/DC converter →
35
VOUT2
DC/DC converter →
36
CHGSW
CS 46 470
3-9
Description
DC power supply input
detection input of charge current (battery charger block)
connection of error amplifier feedback resistor (battery charger block)
inverting input of error amplifier (battery charger block)
connection of feedback resistor (switched power supply block)
inverting input of error amplifier (switched power supply block)
non-inverting input of error amplifier (switched power supply block)
dead time control input (switched power supply block)
reference voltage output
external reference voltage input
input voltage supervises battery cell
low volatge detection output
clock output
reset signal output
88.2kHz/176.4kHz mode select input
external clock input
system control input
system control input
ground
3V regulated voltage output
DC/DC converter control signal output for system power supply
DC/DC converter driver output for system power supply (open drain)
DC/DC converter output for system power supply
capacitor connection for charge pump
capacitor connection for charge pump
capacitor connection for charge pump
capacitor connection for charge pump
charge pump circuit output
external driver control signal at DC/DC converter
battery connection (+)
DCIN detection circuit output
rechargable battery voltage detection circuit output
battery connection (-)
external filter capacitor connection for battery charger voltage detection
external driver control signal (battery charger voltage block)
battery charger switch control output
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