LT1641CS8#TRPBF Linear Technology, LT1641CS8#TRPBF Datasheet - Page 10

• Manufacturer Part Number: LT1641CS8#TRPBF
• Description: IC CTRLR HOTSWAP POS VOLT 8SOIC
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LT1641CS8#TRPBF

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 9 V ~ 80 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Family Name: LT1641
• Package Type: SOIC N
• Operating Supply Voltage (min): 9V
• 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: Lead free / RoHS Compliant

LT1641
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
supply voltage is higher than 20V, the gate drive voltage is
10
Figure 11. Automatic Restart Waveforms
Figure 9. Short-Circuit Waveforms
U
U
CC
is shown in Figure 15. The
W
U
SHORT
GND
at least 10V and a regular N-FET can be used. In applica-
tions ranges 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).
24V
SHORT
V
GND
24V
IN
PIN
49.9k
V
3.4k
IN
PIN
49.9k
1%
1%
R1
R2
3.4k
1%
1%
R1
R2
1
10nF
Figure 10. Automatic Restart Application
D2
30V
1N5256B
C1
1
TIMER
ON
V
ON
CC
Figure 12. Overvoltage Detection
TIMER
0.025Ω
8
5
V
R
C2
0.68µF
CC
S
0.025Ω
8
5
SENSE
R
C2
0.68µF
S
SENSE GATE
7
LT1641
10Ω
5%
R5
LT1641
10Ω
IRF530
7
GATE
5%
R5
GND
Q1
IRF530
GND
Q1
6
4
6
4
1k, 5%
R6,
PWRGD
PWRGD
D1
CMPZ
5248B
10nF
FB
C1
D1
CMPZ
5248B
FB
2
3
2
3
R3
59k
1%
R4
3.57k
1%
R3
59k
1%
R4
3.57k
1%
R7
24k
5%
R7
24k
5%
+
PWRGD
1641 F10
PWRGD
C
1641 F12
1641fd
L
V
C
OUT
L
V
OUT