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LTC4211CMS8 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4211CMS8
Description  Hot Swap Controller with Multifunction Current Control
Download  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4211CMS8 Datasheet(HTML) 3 Page - Linear Technology

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3
LTC4211
4211f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
∆VGATE
External N-Channel Gate Drive
VGATE – VCC (For VCC = 2.5V)
q
4.0
8
V
VGATE – VCC (For VCC = 2.7V)
q
4.5
8
V
VGATE – VCC (For VCC = 3.3V)
q
5.0
10
V
VGATE – VCC (For VCC = 5V)
q
10
16
V
VGATE – VCC (For VCC = 12V)
q
10
18
V
VGATE – VCC (For VCC = 15V)
q
818
V
VGATEOV
GATE Overvoltage Lockout Threshold
q
0.08
0.2
0.3
V
VFB
FB Voltage Threshold
FB High to Low
q
1.223
1.236
1.248
V
∆VFB
FB Threshold Line Regulation
2.5V
≤ VCC ≤ 16.5V
q
0.5
5
mV
VFBHST
FB Voltage Threshold Hysteresis
3mV
VONHI
ON Threshold High
q
1.23
1.316
1.39
V
VONLO
ON Threshold Low
q
1.20
1.236
1.26
V
VONHST
ON Hysteresis
80
mV
IFILTER
FILTER Current
During Slow Fault Condition
q
–2.5
–2
–1.5
µA
During Normal and Reset Conditions
q
710
13
µA
VFILTER
FILTER Threshold
Latched Off Threshold, FILTER Low to High
q
1.20
1.236
1.26
V
VFILTERHST FILTER Threshold Hysteresis
80
mV
ITMR
TIMER Current
Timer On, VTIMER = 1V
q
– 2.5
– 2
– 1.5
µA
Timer Off, TIMER = 1.5V
3
mA
VTMR
TIMER Threshold
TIMER Low to High
q
1.20
1.236
1.26
V
TIMER High to Low
q
0.15
0.200
0.40
V
VFAULT
FAULT Threshold
Latched Off Threshold, FAULT High to Low
q
1.20
1.236
1.26
V
VFAULTHST
FAULT Threshold Hysteresis
50
mV
VOLFAULT
Output Low Voltage
IFAULT = 1.6mA
q
0.14
0.4
V
VOLRESET
Output Low Voltage
IRESET = 1.6mA
q
0.14
0.4
V
tFAULTFC
FAST COMP Trip to GATE Discharging
VCB = 0mV to 200mV Step
q
300
700
ns
tFAULTSC
SLOW COMP Trip to GATE Discharging VCB = 0mV to 100mV Step,
q
10
20
30
µs
8-Pin Version or FILTER Floating
VCB = 0mV to 100mV Step,
q
468
ms
10nF at FILTER Pin to GND
tEXTFAULT
FAULT Low to GATE Discharging
VFAULT = 5V to 0V
q
135
µs
tFILTER
FILTER High to FAULT Latched
VFILTER = 0V to 5V
q
2
4.5
7
µs
tRESET
Circuit Breaker Reset Delay Time
ON Low to FAULT High
q
150
250
µs
tOFF
Turn-Off Time
ON Low to GATE Off
8
µs
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are TA = 25°C. VCC = 5V, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All current into device pins are positive; all current out of device
pins are negative; all voltages are referenced to ground unless otherwise
specified.
Note 3: An internal Zener at the GATE pin clamps the charge pump voltage
to a typical maximum operating voltage of 26V. External voltage applied to
the GATE pin beyond the internal Zener voltage may damage the part. If a
lower GATE pin voltage is desired, use an external Zener diode. The GATE
capacitance must be < 0.15
µF at maximum VCC.


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