Schematic Diagrams
B - 34 POWER
B.Schematic Diagrams
POWER
Sheet 34 of 45
POWER
+2 .5V
+3VS
+3 V
+3VS
+1.5VS
+5VS
+3VS
+3VS
+3V
+3VS
+3VS
+3V
+3VS
+3V
+3V
+3VS
+3V
+3V
+3V
+3V
ICHPWROK
16,24,26,28
CK8_PW RGD 13,22
+5VS 8, 11,14,16,19,22,23,26,28,29,30,34, 35,36
+12V 8,20,21,23,26,28,29,30, 32
+3V 4,9,10, 11,13,14,17,18,19,20,21,22,23,24,26,29,32
+1.5VS 10,14,24,34
+VDD5 9,13,16,19,23,26,29,30,32,34,36
+3VS 2, 4,8,9,10,11,12,13,14,16,18,19,22,23,24,25,28,29,32,35,36
+2.5V 3,4,5,6,7,16,30
+1.2V_HT 2,9,14
H 8BE E P
22
H8_BEEP 26
PGOOD
30
CK8_PWRGD
Z3308
ICHPWROK
Z3311
Z3309
Z3310
H 8BE EP
H 8 _BE E P
Z3302
Z 3301
Z3315
Z3312
R235
1K
C903
0.1U
C309
*0.1U
C206
*0.1U
C902
0.1U
C901
0.1U
C908
0.1U
C900
0.1U
U26
74AHC1G14
2
4
5
3
1
U25
TC7SZ08
2
1
4
3
5
T425
C350
2200P
R232
1K
U14
7404_UMT5
2
4
5
3
1
R379
1M
CA25
0.1U
C904
0.1U
T
R230
470K
C216
0.1U
R243
220K_1%
R242
750K_1%
U15
MIC2774
1
2
3
4
5
RESET#
GND
MR#
RST-IN
VCC
R241
1K
Q45
2SC4672
B
E
C
R347
0
1
2
C905
0.1U
C906
0.1U
C907
0.1U
R343
*5.1K
1
2
POWER SEQUENCING
94/1/26_Alex
CK8_PWRGD Faster than PWRGD_SB.
MAX6306 Delay 200ms
NOTE:
5 / 2 0 C h a n g e
A D D Q 4 5 ( 2 S C 4 6 7 2 ) & U 1 4 ( 7 4 H C 1 G 0 4 ) .
5 / 2 0 C h a n g e
A D D U 1 5 ( M A X 6 3 0 6 ) .
5 / 2 0 C h a n g e
A D D R 3 4 7 ( 0 o h m ) .
94/7/25
U15 V CC ? ? +3V S
R243 180K change to 10K
R242 39K change to 39K
Rubband
Change By vin 7/28
Place at +3VS & +3V Plane Between.
94/9/14
Fix auto-s hutdow n
Rubband
94/11/14 Kevin
94/11/14 Kevin
10K Change 470K