LT4250LCS8 Linear Technology, LT4250LCS8 Datasheet - Page 14

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

Specifications of LT4250LCS8

• 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)
• Family Name: LT4250L
• Package Type: SOIC N
• Operating Supply Voltage (min): -20V
• Operating Supply Voltage (max): -80V
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Product Depth (mm): 3.99mm
• Product Height (mm): 1.5mm
• Product Length (mm): 5mm
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LT4250L/LT4250H
TYPICAL APPLICATION
Using an EMI Filter Module
Many applications place an EMI filter module in the
powerpath to prevent switching noise of the module
from being injected back onto the power supply. A typical
RELATED PARTS
PART NUMBER
LTC
LTC1422
LT1640AH/LT1640AL –48V Hot Swap Controller in SO-8
LT1641-1/LT1641-2
LTC1642
LTC1643
LTC1645
LTC1646
LTC1647
LTC4211
LTC4251
LTC4252
14
–48V RTN
®
1421
* DIODES INC. SMAT70A
–48V
(SHORT PIN)
–48V RTN
*
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
6.49k
549k
10k
1%
1%
1%
R4
R5
R6
3
2
DESCRIPTION
Dual Hot Swap Controller with Additional –12V Control Operates from 3V to 12V
Hot Swap Controller in SO-8
48V Hot Swap Controller in SO-8
Fault Protected Hot Swap Controller
PCI Hot Swap Controller
Dual Hot Swap Controller
Dual CompactPCI Hot Swap Controller
Dual Hot Swap Controller
Hot Swap Controller With Multifunction Current
Control
–48 Hot Swap Controller in SOT-23
–48 Hot Swap Controller in MSOP
UV
OV
V
3
EE
●
4
1
FAX: [phone]
LT4250L
0.02Ω
V
5%
R1
DD
8
PWRGD
DRAIN
SENSE
2
GATE
4
5
1
7
6
100V
15nF
C1
470nF
25V
C2
Figure 15. Typical Application Using a Filter Module
IRF530
●
Q1
www.linear.com
R3
1k
5%
R2
10Ω
5%
1N4003
C3
0.1μF
100V
V
V
FLTR100V10
IN
IN
MOC207
LUCENT
+
–
R7
51k
5%
CASE
application using the Lucent FLTR100V10 filter module is
shown in Figure 15. When using a filter, an optoisolator
is required to prevent common mode transients from
destroying the PWRGD and ON/OFF pins.
COMMENTS
System Reset Output With Programmable Delay
LT4250 is a Pin-Compatible Upgrade to LT1640
Foldback Current Limit, 9V to 80V, Auto-Retry/Latch-Off
Operates Up to 16.5V, Protected to 33V
3.3V, 5V, 12V, –12V Supplies for PCI Bus
Operates from 1.2V to 12V, Power Sequencing
3.3V, 5V Supplies With Precharge and Local PCI Reset Logic
Dual ON Pins for Supplies from 3V to 15V
2.5V to 16.5V Supplies, Active Inrush Current Limiting
Active Current Limiting, Fast Comparator for Catastrophic Faults
Active Current Limiting, Fast Comparator for Catastrophic Faults, Separate
UV/0V Pins, Power-Good Output
V
V
OUT
OUT
+
–
C4
0.1μF
100V
+
C5
100μF
100V
C6
0.1μF
100V
© LINEAR TECHNOLOGY CORPORATION 2001
1
2
4
V
ON/OFF
V
IN
IN
JW050A1-E
+
–
LUCENT
CASE
LT 0309 REV A • PRINTED IN USA
SENSE
SENSE
3
V
V
TRIM
OUT
OUT
+
+
–
–
4250 F15
9
8
7
6
5
+
C7
100μF
16V
5V
4250lhfa