LTC4211CS8#TR Linear Technology, LTC4211CS8#TR Datasheet - Page 11
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LTC4211CS8#TR
Manufacturer Part Number
LTC4211CS8#TR
Description
IC CONTROLLER HOT SWAP 8-SOIC
Manufacturer
Linear Technology
Type
Hot-Swap Controllerr
Datasheet
1.LTC4211IMS8PBF.pdf
(36 pages)
Specifications of LTC4211CS8#TR
Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
2.5 V ~ 16.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Linear Misc Type
Positive Low Voltage
Family Name
LTC4211
Package Type
SOIC N
Operating Supply Voltage (min)
2.5V
Operating Supply Voltage (max)
16.5V
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
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
LTC4211CS8TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
BLOCK DIAGRA
PI FU CTIO S
FAULT (Not available on S8/MS8, Pin 10 MS): FAULT is
both an input and an output. Connected to this pin are an
analog comparator (COMP6) and an open-drain N-chan-
nel FET. During normal operation, if COMP6 is driven
below 1.236V, the electronic circuit breaker trips and the
GATE pin pulls low. Typically, a 10k pull-up resistor
connects to the FAULT pin. This allows the LTC4211 to
begin a second timing cycle (V
properly. This also allows the use of the FAULT pin as a
status output. Under normal operating conditions, the
FAULT output is a logic high. Two conditions cause an
active low on FAULT: (1) the LTC4211’s electronic circuit
breaker trips because of an output short circuit (V
MS ONLY
U
FILTER
TIMER
3 (4)
(3)
NOTE 1: SET BY FILTER CAPACITOR FOR MS
PIN NUMBERS FOR S8/MS8 (MS)
10µA
2µA
2µA
U
M6
M5
M4
V
V
20µs DEFAULT FOR MS8, S8
CC
CC
V
V
0.2V
REF
REF
U
+
–
+
–
+
–
COMP3
COMP4
COMP5
t
(8-Lead Package/10-Lead Package)
TIMER
W
NORMAL
NORMAL, RESET
FAULT
FAULT
UVLO
> 1.286) and start-up
V
CC
8 (9)
GLITCH FILTER
(SEE NOTE 1)
+
SLOW
COMP
–
+
–
50mV
OUT
+
2
GLITCH FILTER
SENSE
DELAY
COMP
300ns
FAST
–
=
COMP1
ON
150µs
–
+
–
LOGIC
7 (8)
V
+
REF
150mV
0V) or because of a fast output overcurrent transient
(FAST COMP trips circuit breaker); or (2) V
1.236V. The FAULT output is driven to logic low and is
latched logic low until the ON pin is driven to logic low for
150µs (the t
FILTER (Not available S8/MS8, Pin 3 MS): Overcurrent
Fault Timing Pin and Overvoltage Fault Set pin. With a
capacitor connected from this pin to ground, the SLOW
COMP’s response time can be adjusted. In the S8/MS8
version of the LTC4211, the FILTER pin is not available and
the delay time from overcurrent detect to GATE OFF is fixed
at 20µs.
5 (6)
GLITCH FILTER
FUNCTION OF
OVERDRIVE
–
COMP2
FB
M3
CB
TRIPS
OR UVLO
COMP7
V
+
REF
RESET
–
+
200µA
ON LOW
GATE
0.2V
duration).
6 (7)
REGULATOR
START-UP
CURRENT
V
0.2V
REF
10µA
10µA
V
Z
(TYP) = 12V
CHARGING
CHARGE
PUMP
BG
GATE
POWER BAD
CB TRIPS
Z1
V
CC
COMP6
+
–
Z2
V
Z
LTC4211
(TYP) = 26V
V
M1
M2
REF
4211 BD
FILTER
RESET
1
FAULT
(10)
MS ONLY
GND
4 (5)
11
4211fa
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