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參數(shù)資料
| 型號： | LTC4210-2 |
| 廠商： | Linear Technology Corporation |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Hot Swap Controller in 6-Lead SOT-23 Package |
| 中文描述： | 熱插拔控制器的6引腳SOT - 23封裝 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 246K |
| 代理商： | LTC4210-2 |
12
LTC4210-1/LTC4210-2
421012f
The current through R
SENSE
can be divided into two
components; I
CLOAD
due to the total load capacitance
(C
LOAD
) and I
LOAD
due to the noncapacitive load elements.
The capacitive load typically dominates.
For a successful start-up without current limit, I
RSENSE
<
I
LIMIT
:
I
RSENSE
= I
CLOAD
+ I
LOAD
< I
LIMIT
I
C
V
T
I
I
RSENSE
LOAD
OUT
LOAD
LIMIT
=
+
<
(7)
Due to the voltage follower configuration, the V
OUT
ramp
rate approximately tracks V
GATE
:
=
≈
=
V
T
I
C
V
T
I
C
OUT
CLOAD
LOAD
GATE
GATE
GATE
(8)
At time point 6, V
OUT
is approximately V
IN
but GATE ramp-
up continues until it reaches a maximum voltage. This
maximum voltage is determined either by the charge
pump or the internal clamp.
Start-Up Cycle With Current Limit
If the duration of the current limit is brief during start-up
(Figure 4) and it did not last beyond the circuit breaker
function time out, the GATE behaves the same as in start-
up without current limit except for the time interval be-
tween time point 5A and time point 5B. The servo amplifier
limits I
RSENSE
by decreasing the I
GATE
current (<10
μ
A).
mV
R
SENSE
Equations 8 and 9 are applicable but with a lower GATE and
V
OUT
ramp rate.
I
I
RSENSE
LIMIT
=
=
50
(9)
Gate Start-Up Time
The start-up time without current limit is given by:
t
C
V
V
I
t
C
V
I
C
V
I
STARTUP
GATE
TH
IN
GATE
STARTUP
GATE
TH
GATE
GATE
IN
GATE
=
+
=
+
(10)
During current limiting, the second term in Equation 10 is
partly modified from C
GATE
V
IN
/I
GATE
to C
LOAD
V
IN
/I
CLOAD
. The start-up time is now given by:
t
C
V
I
C
V
I
C
V
I
C
V
I
I
STARTUP
GATE
TH
GATE
LOAD
IN
CLOAD
GATE
TH
GATE
LOAD
IN
–
RSENSE
LOAD
=
+
=
+
For successful completion of current limit start-up cycle
there must be a net current to charge C
LOAD
and the
current limit duration must be less than t
CBDELAY
. The
second term in equation 11 has to fulfill equation 12.
C
V
I
I
t
LOAD
IN
–
RSENSE
LOAD
CBDELAY
<
(12)
APPLICATIOU
W
U
U
V
TIMER
V
GATE
V
OUT
I
RSENSE
V
ON
V
IN
>2.5V
1
2
3 4 5
5A
5B 6
7
RESET
MODE
INITIAL
CYCLE
START-UP
CYCLE
NORMAL
CYCLE
5
μ
A
100
μ
A
COMP1
10
μ
A
10
μ
A
60
μ
A
100
μ
A
DISCHARGE
BY LOAD
REGULATED AT 50mV/R
SENSE
V
TH
COMP2
2
μ
A
<10
μ
A
4210 F04
>1.3V
Figure 4. Operating Sequence with
Current Limiting at Start-Up Cycle
(11)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4210-2CS6 | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 |
| LTC4210-2CS6#PBF | 制造商:Linear Technology 功能描述:HOT SWAP CONTROLLER, 2.7V TO 16.5V, TSOT-23-6; Controller Applications:Electronic Circuit Breaker, Hot Board Insertion/Removal, Industrial High Side Switch/Circuit Breaker; Internal Switch:Yes; Supply Voltage Min:2.7V; No. of Pins:6 ;RoHS Compliant: Yes |
| LTC4210-2CS6#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:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關: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） 供應商設備封裝:10-MSOP 包裝:管件 |
| LTC4210-2CS6#TRM | 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:- 產(chǎn)品培訓模塊:Obsolescence Mitigation Program 標準包裝:100 系列:- 類型:熱插拔開關 應用:通用 內(nèi)部開關:是 電流限制:可調(diào) 電源電壓:9 V ~ 13.2 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN-EP（3x3） 包裝:管件 |
| LTC4210-2CS6#TRMPBF | 功能描述:IC CONTROLLER HOT SWAP TSOT23-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 熱交換 系列:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統(tǒng)，AdvancedTCA ? 系統(tǒng)，高可用性 內(nèi)部開關: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） 供應商設備封裝:10-MSOP 包裝:管件 |
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