Circuit Boards（シート基板図 - Yamaha DTXTREME III Service Manual

LM3525MX-H/NOPB (X3119A00)
DM: IC28
USB Power Switch
EN OUT
1 8
FLAG IN
2 7
GND OUT
3 6
FLAG
NC NC
4 5
Pin No. Pin Name
1 EN Enable (Input): Logic-compatible enable input.
(LM3525-L)
EN
(LM3525-H)
2 FLG Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent, UVLO,
and thermal shutdown.
3 GND Ground
4, 5 NC Not internally connected.
7 IN Supply Input: Input to the power switch and the supply voltage for the IC.
6, 8 OUT Switch Output: Output of the high side switch. Pins 6 and 8 must be tied together.
LTC1773EMS (X3215A00)
DMSUB: IC103
DC-DC CONVERTER
I 1 10
TH
RUN/SS 2 9
SYNC/FCB 3 8
V 4 7
FB
GND 5 6
CIRCUIT BOARDS（シート基板図）
DM Circuit Board (X3164G0) ............................................................... 28/30
DMSUB Circuit Board (X9380C0) ....................................................... 32/34
JK Circuit Board (X9365C0) ................................................................ 36/38
PN Circuit Board (X9385C0/X9385D0) ............................................... 40/42
Note: See parts list for details of circuit board component parts.
注 : シートの部品詳細はパーツリストをご参照ください。
IN OUT
7 8
Error
FET
Detect
Drive
2
and
Shutdown
EN
1
Control
Pin Function
0.4μA
SYNC/FCB 3
0.6V
SW
V
SENSE – 4
FB
V
IN
TG
BG
SHUTDOWN
LTC1144CS8 (X9457A00)
DMSUB: IC127
Voltage Converter -12V
+
BOOST 1 V
8
+
CAP
2 OSC
7
GND
3 6 SHDN
-
CAP
4 5 V
OUT
Pin No. Pin Name
1 BOOST
CAP +
2
3 GND
CAP -
4
6 V OUT
5
SHDN
7
OSC
V +
8
Y Y= "0" ONLY WHEN X IN A CONSTANT "1"
BURST
DEFEAT
X
SLOPE
COMP
OSC
SYNC
DEFEAT
0.8V
FREQ
EA
SHIFT
1.5μA
0.8V REF
UVLO
TRIP = 2.5V
UVLO
TRIP = 2.5V
OVDET
0.86V
0.8V
SYNC
DEFEAT
2
RUN/SS
V +
(8)
SW1
BOOST
10X
(1)
÷
OSC 2
OSC
(7)
SHDN
(6)
Pin Function
This pin will raise the oscillator frequency by a factor of 10 tied high.
Positive Terminal for Pump Capacitor
Ground Reference
Negative Terminal for Pump Capacitor
Output of the Converter
Shutdown Pin
Oscillator Input Pin
Input Voltage
0.4V
EN
SLEEP
I
COMP
50mV
0.22V
BURST
COMP
S Q
R Q
SWITCHING
LOGIC
AND
ANTI
BLANKING
SHOOT-THRU
CIRCUIT
I
RCMP
1
I
TH
DTXTREME Ⅲ
SW2
CAP +
(2)
+
C1
CAP -
V
OUT
(5)
(4)
+
C2
GND
(3)
V
8
IN
SENSE –
9
7 TG
6 BG
10 SW
5 GND
27