LTC4214-1CMS Linear Technology, LTC4214-1CMS Datasheet - Page 25

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

Specifications of LTC4214-1CMS

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: 6 V ~ 16 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
Circuit Breaker Timing
In Figure 13a, the TIMER capacitor charges at 40 A if the
SENSE pin exceeds V
SENSE pin drops below V
V
13b, when TIMER exceeds V
TMRH
threshold, TIMER is discharged by 5 A. In Figure
(13a) Momentary Circuit-Breaker Fault
PWRGD
SENSE
TIMER
DRAIN
GATE
V
OUT
SS
V
TMRH
CB FAULT
1
U
2
CB
40 A + 8 • I
Figure 13. Circuit-Breaker Timing Behavior (All Waveforms are Referenced to V
V
V
but V
ACL
CB
U
CB
5 A
DRN
before TIMER reaches the
DRN
TMRH
is less than 4.2V. If the
W
, GATE pulls down
(13b) Circuit-Breaker Time Out
U
PWRGD
TIMER
SENSE
DRAIN
GATE
V
OUT
SS
V
TMRH
1
CB FAULT
V
DRNCL
immediately and the LTC4214 shuts down. In Figure 13c,
multiple momentary faults cause the TIMER capacitor to
integrate and reach V
the LTC4214 shuts down. During shutdown, the LTC4214-1
latches TIMER high with a 5 A pull-up current source; the
LTC4214-2 activates a shutdown cooling cycle.
CB TIMES OUT
2
40 A + 8 • I
V
V
ACL
CB
DRN
LTC4214-1/LTC4214-2
(13c) Multiple Circuit-Breaker Fault
PWRGD
SENSE
TIMER
DRAIN
GATE
V
OUT
SS
TMRH
V
TMRH
CB FAULT
. GATE pull down follows and
1
2
EE
5 A
40 A + 8 • I
)
V
DRNCL
CB FAULT
3
CB TIMES OUT
4
DRN
4214 F13
V
V
40 A + 8 • I
ACL
CB
25
DRN
421412f