Datasheet

LT4250L/LT4250H
12
4250lhfa
APPLICATIONS INFORMATION
Figure 13. Active Low Enable Module
Figure 14. Using PWRGD to Drive an Optoisolator
V
EE
LT4250L
SENSE
OV
UV
V
DL
V
GH
+
–
+
–
+
–
+
–
GATE
ΔV
GATE
+
V
DD
C1
C3
Q1
R2
R3
C2
R4
R5
R6
R1
4
3
2
–48V RTN
–48V
56
8
1
7
GATE
4250 F13
PWRGD
DRAIN
V
EE
ACTIVE LOW
ENABLE MODULE
V
OUT
+
V
OUT
–
V
IN
+
V
IN
–
ON/OFF
–48V RTN
(SHORT PIN)
*
* DIODES INC. SMAT70A
43
21
Q2
V
EE
V
DD
LT4250L PWRGD
SENSE
C1
470nF
25V
C3
100μF
100V
Q1
IRF530
R2
10Ω
5%
R7
51k
5%
R3
1k, 5%
C2
15nF
100V
R4
549k
1%
R5
6.49k
1%
R6
10k
1%
R1
0.02Ω
5%
4
3
2
OV
–48V RTN
–48V
UV
56
8
7
1
MOC207
GATE DRAIN
4250 F14
PWRGD
+
–48V RTN
(SHORT PIN)
*
* DIODES INC. SMAT70A
43
21