LT1941EFE Ver la hoja de datos (PDF) - Linear Technology
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LT1941EFE Datasheet PDF : 24 Pages
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LT1941
APPLICATIONS INFORMATION
SLIC Power Supply
–21.6V, –65V, 3.3V and 1.8V with Soft-Start
VIN
5V
5GOOD
12GOOD
VOUT1
1.8V
2.4A
C6
10μF
VOUT1
VOUT2
D1
L1 3μH
C3
33μF
L3
2.7μH
R7
13.7k
D3
R6
7.32k
R15
1Ω
C5
1μF
35V
R2 R1
130k 100k
C1
0.22μF
VIN
PGOOD1
5GOOD PGOOD2
12GOOD PGOOD3
BOOST1 BOOST2
LT1941
SW1
SW2
C12 3300pF
R4 C14
3.3k 1.5nF
R13 R5
178k 10.2k
FB1
FB2
VC1
VC2
RUNSS1 RUNSS2
SW3
BIAS1
NFB
BIAS2
FB3
PGND
VC3
RUNSS3
GND
D5
R3 R8 R9
100k 100k 100k
C2
0.22μF
D2
L2 3.3μH
R12
10.7k
C13 1000pF
C15
R10 R11
D4
C4
22μF
1.5nF 10k 2.49k
C16 4700pF
C17
1.5nF
R14
15k
1941 TA01
VOUT3
–21.6V
72mA
C7
4.7μF
25V
D6
C9
4.7μF
25V
NOTE: TOTAL OUTPUT POWER OF VOUT3 AND VOUT4 NOT TO EXCEED 1.9W
C1 TO C11: X5R OR X7R
D1, D2: CMDSH-3
D3: B220A
D4: MBRM120L
C8
D5 TO D7: BAV99 OR EQUIVALENT
1μF
35V
D7
C10
1μF
35V
C11
4.7μF
25V
VOUT4
–65V
30mA
PGOOD1
PGOOD2
PGOOD3
VOUT2
3.3V
1.4A
1941fb
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