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參數(shù)資料
| 型號： | LTC4210-2CS6#TRM |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 9/20頁 |
| 文件大小： | 251K |
| 描述： | IC CONTROLLER HOT SWAP TSOT23-6 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 熱交換控制器 |
| 應(yīng)用： | 通用 |
| 內(nèi)部開關(guān)： | 無 |
| 電源電壓： | 2.7 V ~ 16.5 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 細型，TSOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 剪切帶 (CT) |
| 產(chǎn)品目錄頁面： | 1342 (CN2011-ZH PDF) |
| 其它名稱： | LTC4210-2CS6 LTC4210-2CS6#TRMCT LTC4210-2CS6-ND |
9
LTC4210-1/LTC4210-2
421012f
SENSE RESISTOR
CURRENT FLOW
TO LOAD
RACK WIDTH W:
0.03" PER AMP
N 1 OZ COPPER
W
TO
V
TO
SENSE
4210 F01
CURRENT FLOW
TO LOAD
Figure 1. Making PCB Connections to the Sense Resistor
APPLICATIO S I FOR ATIO
U
U
U
Current Limit Circuit Breaker Function
The LTC4210 features a current limiting circuit breaker
instead of a traditional comparator circuit breaker. When
there is a sudden load current surge, such as a low
impedance fault, the bus supply voltage can drop signifi-
cantly to a point where the power to an adjacent card is
affected, causing system malfunctions. The LTC4210 fast
response error amplifier (EA) instantly limits current by
reducing the external MOSFET GATE pin voltage. This
minimizes the bus supply voltage drop and permits power
budgeting and fault isolation without affecting neighbor-
ing cards. A compensation circuit should be connected to
the GATE pin for current limit loop stability.
Sense Resistor Consideration
The nominal fault current limit is determined by a sense
resistor connected between V
CC
and the SENSE pin as
given by Equation 1.
I
V
R
mV
R
LIMIT NOM
CB NOM
SENSE NOM
SENSE NOM
(
)
(
)
(
)
(
)
=
=
50
(1)
The power rating of the sense resistor should be rated at
the fault current level. Table 2 in the Appendix lists some
common sense resistors.
For proper circuit breaker operation, Kelvin-sense PCB
connections between the sense resistor and the LTC4210
V
CC
and SENSE pins are strongly recommended. The
drawing in Figure 1 illustrates the connections between
the LTC4210 and the sense resistor. PCB layout should be
balanced and symmetrical to minimize wiring errors. In
addition, the PCB layout for the sense resistor should
include good thermal management techniques for optimal
sense resistor power dissipation.
Calculating Current Limit
For a selected R
SENSE
, the nominal load current is given by
Equation 1. The minimum load current is given by
Equation 2:
I
V
R
mV
R
LIMIT MIN
CB MIN
SENSE MAX
SENSE MAX
( )
( )
(
)
(
)
=
=
44
(2)
where
R
R
R
SENSE MAX
SENSE
TOL
(
)
"
=
+
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
100
The maximum load current is given by Equation 3:
I
V
R
mV
R
LIMIT MAX
CB MAX
SENSE MIN
SENSE MIN
(
)
(
)
( )
( )
=
=
56
(3)
where
R
R
R
SENSE MIN
SENSE
TOL
( )
"
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
100
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| LTC4210-2IS6 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-2IS6#PBF | 制造商:Linear Technology 功能描述:HOT SWAP CNTRL INT SWITCH 6T 制造商:Linear Technology 功能描述:HOT SWAP CNTRL, INT SWITCH, 6TSOT23 制造商:Linear Technology 功能描述:HOT SWAP CONTROLLER, 2.7-16.5V, TSOT-23-6; Controller Applications:Electronic Circuit Breaker, Hot Board Insertion, Industrial High Side Switch / Circuit Breaker; Internal Switch:Yes; Supply Voltage Min:2.7V; Supply Voltage Max:16.5V;RoHS Compliant: Yes |
| LTC4210-2IS6#TR | 功能描述:IC CONTROLLER HOT SWAP TSOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 類型:熱交換控制器 應(yīng)用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關(guān):無 電流限制:可調(diào) 電源電壓:11.5 V ~ 14.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| LTC4210-2IS6#TRM | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 T/R |
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