Datasheet

15
LT1575/LT1577
TYPICAL APPLICATIONS N
U
1
2
3
4
8
7
6
5

+
LT1575-1.5
R2
3.9Ω
R1
0.005Ω
R5
150Ω
R4
75Ω
R8
100Ω
R9
100Ω
V
TT

1.5V
R10
100Ω
R6
75Ω
R7
150Ω
R3
4.99k
C5
1000pF
C8 TO C23
1µF
CERAMIC
0805
CASE
C6
0.1µF
C7
0.1µF
V
REF
V
REF
Q1
IRFZ24
C3
1µF
C4
10pF
C2
0.22µF
RESET
12V
V
IN

3.3V
C1
220µF
6.3V
SHDN
V
IN

GND
OUT
IPOS
INEG
GATE
COMP
RX
TX
•
•
•
RX
TX
RX
TX
RX
TXQ4
Q2
Q3
Q5
1575/77 TA12
142 TOTAL SIGNAL LINES
NOTE: LTC RECOMMENDS CENTRALLY
LOCATING THE LT1575-1.5 OUTPUT
TO MINIMIZE V
TT
DISTRIBUTION
DROPS AND USING SEPARATE V
REF

GENERATORS AT EACH BUS END
R11
100Ω
Pentium
®
II Processor GTL+ Power Supply
Generating 12V Gate Drive from a 5V Power Supply
1
2
3
4
8
7
6
5

LT1262
C1
0.22µF
C3
4.7µF
C8
390pF
R1
2k
74HC14
D6
BAT85
D3
BAT85
C9
0.22µF
C7
100µF
10V
1575/77 TA13
C6
10µF
25V
C5
100µF
10V
D1
1N5818
L1
33µH
C4
4.7µF
12V
25mA
12V
25mA
12V
25mA
V
CC

4.75V TO 5.5V
V
CC

4.75V TO 5.5V
V
CC

4.75V TO 5.5V
C1
–

C1
+

C2
–

C2
+
SHDN
GND
V
OUT

V
CC
+
+
+
+
C11
0.22µF
C12
0.22µF
C10
0.22µF
C2
0.22µF
SW
2
1
3
LT1109CZ-12
V
OUT
GND
+
D2
BAT85
D4
BAT85
D5
BAT85
×5
Pentium is a registered trademark of Intel Corporation.