Datasheet

LT4430
22
4430fc
For more information www.linear.com/LT4430
Typical applicaTions
•
•
•
•
36V TO 72V
V
IN
4430 TA03a
26V 8A
7, 10
PA0741 T1
8, 11
2 4
•
2 4
R24 261k 1%
R22 330Ω
R21 330Ω
C
OUT
= TDK
D1, D2, D7 = PHILIPS Q1, Q2 = PHILIPS L1 = PULSE ENGINEERING PB2020.103 T1 = PULSE ENGINEERING T2 = COILCRAFT Q4470-B
R23
8.2k
C15
2.2nFC13
1µF
R25 6.04k 1%
1
V
BS
V
BS
6
C
OUT
22µF 50V X7R
2 5 3 4
NEC PS2701
Q2 PH21NQ15 x2
Q1 BCX55
LT4430
ISOLATION
BARRIER
C4 1nF
C14
33nF
C16
10pF
VU1
Q4 PH20100
Q5 PH20100
D1 12V
VU1
R10 22k R11 1.2k
R1 82k
R3 370k
R2 47k
R26
10Ω
C1 2.2µF 100V
C2 1µF
R14 0.008Ω
7 3 5
LT1952
C3 2.2µF
VU1
4
14 15 13 16
SD_V
SEC
R
OSC
SS_MAXDC SYNCNC
S
OUT
V
IN
9 8
BLANK GND
PGND
S
OUT
2 10
FB I
SENSE
1 11
COMP OC
6 12
V
REF
DELAY
D2 18V
D3
BAS516
V
BS
LTC3900
SYNC
8 7
TIMER
GND
6 2
CS
–
CS
–
V
CC
4 1
CS
+
FG
5 3
CG
V
IN
GND OC
OPTO
COMP
FB
C11
1µF
C7
220pF
C17
2200pF
250V
R18
10k
L1
10µH
R19
10k
R17 10k
C12 1nF
R20 15k
V
BS
R15
2.2Ω
C10 1µF
R16 1k
Q3 BCX55
D7 8.2V
C9
10nF
100V
D5
B0540W
D6
B0540W
C8
6.8nF
100V
R12
39k
R4
13.2k
R6
33k
R5
114k
R8
33k
R7
33k
R13
680Ω
R9
33k
D4 BAT760
C5 0.47µF C6 0.1µF
T2
200W, 26V, 95% Efficient Base Station Converter