lt1941 Linear Technology Corporation, lt1941 Datasheet - Page 21

• Manufacturer Part Number: lt1941
• Description: Triple Monolithic Switching Regulator
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIO S
12GOOD
5GOOD
–21.6V
V
V
V
72mA
30mA
–65V
OUT1
OUT3
OUT4
1.8V
2.4A
V
5V
10µF
IN
C6
4.7µF
4.7µF
4.7µF
25V
25V
C11
25V
C7
C9
L1 3µH
C3
33µF
2.7µH
D1
L3
D5
D6
D7
1µF
35V
D3
C5
R15
13.7k
1Ω
U
7.32k
R7
R6
C8
1µF
35V
C10
1µF
35V
–21.6V, –65V, 3.3V and 1.8V with Soft-Start
3.3k
C12 3300pF
R4
R13
178k
R2
130k
C1
0.22µF
1.5nF
C14
R1
100k
NOTE: TOTAL OUTPUT POWER OF V
C1 TO C11: X5R OR X7R
D1, D2: CMDSH-3
D3: B220A
D4: MBRM120L
D5 TO D7: BAV99 OR EQUIVALENT
R5
10.2k
SLIC Power Supply
5GOOD
12GOOD
BOOST1
RUNSS1
SW3
NFB
FB3
SW1
FB1
V
C1
PGND
LT1941
V
IN
PGOOD1
PGOOD2
PGOOD3
RUNSS2
RUNSS3
BOOST2
GND
BIAS1
BIAS2
SW2
FB2
V
V
C2
C3
V
OUT1
C15
1.5nF
C13 1000pF
OUT3
R3
100k
AND V
R10
10k
C17
1.5nF
R8
100k
V
C16 4700pF
OUT2
C2
0.22µF
OUT4
R11
2.49k
10.7k
R12
NOT TO EXCEED 1.9W
R9
100k
D4
R14
15k
L2 3.3µH
22µF
C4
D2
1941 TA01
PGOOD1
PGOOD2
PGOOD3
V
3.3V
1.4A
OUT2
LT1941
21
1941fa