LT3502 LINER [Linear Technology], LT3502 Datasheet - Page 18

• Manufacturer Part Number: LT3502
• Manufacturer: LINER [Linear Technology]

LT3502/LT3502A
APPLICATIONS INFORMATION
18
IMPEDANCE
24V SUPPLY
ENERGIZED
LOW
+
+
+
Figure 9. A Well Chosen Input Network Prevents Input Voltage Overshoot and
Ensures Reliable Operation When the LT3502 is Connected to a Live Supply
SIMULATES HOT PLUG
CLOSING SWITCH
LT3502
70pF
AI.EI.
0.1μF
10μF
150k
35V
C
GND
R
C
STRAY
INDUCTANCE
DUE TO 6 FEET
(2 METERS) OF
TWISTED PAIR
C
+
V
0.5V
C
I
IN
1Ω
1M
Figure 10. Model for Loop Response
AMPLIFIER
V
–
+
ERROR
IN
g
1A/V
m
2.2μF
2.2μF
2.2μF
100μA/V
=
CURRENT MODE
POWER STAGE
g
LT3502
LT3502
LT3502
m
=
–
+
800mV
(9a)
(9b)
(9c)
SW
FB
20V/DIV
20V/DIV
20V/DIV
5A/DIV
5A/DIV
5A/DIV
V
V
V
I
I
I
IN
IN
IN
IN
IN
IN
R1
R2
C
C1
ESR
PL
+
3502 F10
OUT
DANGER!
RINGING V
ABSOLUTE MAXIMUM
RATING OF THE LT3502
20μs/DIV
20μs/DIV
20μs/DIV
C1
IN
MAY EXCEED
3502 F09
3502fc