LT4250LCS8#PBF Linear Technology, LT4250LCS8#PBF Datasheet - Page 7

IC CONTRLR HOTSWAP NEG 48V 8SOIC

LT4250LCS8#PBF

Manufacturer Part Number
LT4250LCS8#PBF
Description
IC CONTRLR HOTSWAP NEG 48V 8SOIC
Manufacturer
Linear Technology
Type
Hot-Swap Controllerr
Datasheet

Specifications of LT4250LCS8#PBF

Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
-20 V ~ -80 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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TEST CIRCUIT
TIMING DIAGRAM
GATE
SENSE
OV
100mV
GATE
V
EE
2V
0V
DRAIN
PWRGD
PWRGD
DRAIN
V
Figure 5a. DRAIN to PWRGD/PWRGD Timing
PWRGD
V
UV
– V
5V
V
60mV
DRAIN
+
V
1.255V
OV
Figure 2. OV to GATE Timing
Figure 4a. SENSE to GATE Timing
Figure 1a. Test Circuit 1
1V
= 0V
5k
R
t
PHLOV
t
PHLSENSE
1V
PWRGD/PWRGD V
OV
UV
V
EE
LT4250L/LT4250H
SENSE
DRAIN
GATE
1.4V
1.4V
DD
t
PHLDL
1V
t
PHLDL
1V
1.235V
4250 F01a
V
V
DRAIN
SENSE
4250 F05a
+
V
t
V
V
48V
PLHOV
1V
EE
EE
EE
4250 F02
4250 F04a
GATE
GATE
UV
V
UV
UV
2V
0V
GATE
PWRGD
PWRGD
V
Figure 5b. GATE to PWRGD/PWRGD Timing
ΔV
ΔV
PWRGD
GATE
GATE
Figure 4b. Active Current Limit Timeout
– V
– V
– V
PWRGD/PWRGD V
OV
UV
V
1.125V
GATE
GATE
DRAIN
EE
LT4250L/LT4250H
Figure 1b. Test Circuit 2
GATE
Figure 3. UV to GATE Timing
= 0
= 0
1V
= 0
t
PHLUV
1V
LT4250L/LT4250H
1.4V
1.4V
DRAIN
SENSE
GATE
DD
t
PHLCB
t
t
PHLGH
PHLGH
1V
1V
+
48V
0.1μF
10k
10Ω
+
4250 F05b
1.255V
20V
1V
V
t
EE
PLHUV
IRF530
1V
10Ω
4250 F01b
4250 F04b
4250 F03
4250lhfa
7

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