LT1641-1IS8 Linear Technology, LT1641-1IS8 Datasheet - Page 10

• Manufacturer Part Number: LT1641-1IS8
• Description: IC CONTRLR HOTSWAP POSVOLT 8SOIC
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LT1641-1IS8

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 9 V ~ 80 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LT16411IS8

LT1641-1/LT1641-2
APPLICATIO S I FOR ATIO
GATE Pin Voltage
A curve of gate drive vs V
GATE pin is clamped to a maximum voltage of 18V above
the input voltage. At minimum input supply voltage of 9V,
the minimum gate drive voltage is 4.5V. When the input
10
Figure 9. Short-Circuit Waveforms
U
U
CC
is shown in Figure 13. The
W
Figure 11. Overvoltage Waveforms
U
SHORT
GND
24V
supply voltage is higher than 20V, the gate drive voltage is
at least 10V and a regular N-FET can be used. In applica-
tions over a 9V to 24V range, a logic level N-FET must be
used with a proper protection Zener diode between its gate
and source (as D1 shown is Figure 5).
V
IN
49.9k
PIN
3.4k
1%
1%
R1
R2
D2
30V
1N5256B
1
ON
Figure 10. Overvoltage Detection
TIMER
V
CC
0.025Ω
8
5
R
C2
0.68µF
S
SENSE GATE
LT1641-1
10Ω
7
5%
R5
IRF530
GND
Q1
6
4
1k, 5%
R6,
PWRGD
10nF
C1
D1
CMPZ
5248B
FB
2
3
R3
59k
1%
R4
3.57k
1%
R7
24k
5%
+
164112fc
PWRGD
1641-1 F10
C
L
V
OUT