LTC4214-1IMS#TRPBF Linear Technology, LTC4214-1IMS#TRPBF Datasheet - Page 30

• Manufacturer Part Number: LTC4214-1IMS#TRPBF
• Description: IC CTRLR HOTSWAP NEGVOLT 10MSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC4214-1IMS#TRPBF

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 6 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIO S I FOR ATIO
LTC4214-1/LTC4214-2
Power Limit Circuit Breaker
Figure 18 shows the LTC4214-1 in a power limit circuit
breaking application. The SENSE pin is modulated by the
board supply voltage, V
to be the same as the low supply operating voltage,
V
operating voltage, V
power at V
selected using the ratio:
If R6 is 20 , R4 is 5.6k. The peak circuit breaker power
limit is:
30
SUPPLY(MIN)
POWER
R
R
4
6
V
SUPPLY MAX
MAX
SUPPLY(MIN)
= 10V. If the goal is to have the high supply
V
CB
(SHORT PIN)
(
1 029
•
4
POWER
V
.
U
•
SUPPLY MIN
SUPPLY(MAX)
V
–12V
)
GND
GND
SUPPLY
SUPPLY MIN
, then resistors R4 and R6 are
•
POWER
U
Z1: SMAJ15A
100nF
3.65k
32.4k
124k
SUPPLY MIN
(
1%
1%
1%
R1
R2
R3
C
10
X
. The zener voltage, V
R
(
X
)
SUPPLY MIN
)
= 14V give the same
(
V
•
W
SUPPLY MAX
Figure 18. Power Limit Circuit Breaking Application
V
C1
1nF
SUPPLY MAX
)
Z1
(
(
C
47nF
T
)
(
U
10
)
9
8
3
2
)
Z
OV
TIMER
UV
SS
C
22nF
is set
SS
(16)
(17)
LTC4214-1
V
V
EE
IN
PWRGD
5
1
R
470
SENSE
DRAIN
IN
GATE
when
The peak power at the fault current limit occurs at the
supply overvoltage threshold. The fault current limited
power is:
2
7
6
4
POWER
V
V
SUPPLY
SUPPLY
R
C
0.1 F
IN
S
FAULT
R4
5.6k
= 0.5 • (V
•
D1
BZX84C10
R
10
V
C
C
10nF
ACL
C
10k
R5
R6 20
V
–
LOGIC
SUPPLY(MIN)
Q2
2N2222
V
R
D2
1N4148
475k
PULLUP
SUPPLY
R
D
+
Q1
IRF7413
4214 F18
–
R
0.025
S
C
100 F
+ V
V
L
Z
GND
SUPPLY(MAX)
EN
V
•
OUT
R
R
6
4
) = 12V.
421412f
(18)