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參數資料
| 型號： | LTC4210-2IS6 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Microprocessor Crystal; Frequency:32.768MHz; Frequency Tolerance:20ppm; Load Capacitance:18pF; Crystal Terminals:Radial Leaded; ESR:25ohm; Leaded Process Compatible:Yes; Mounting Type:Through Hole; No. of Pins:2 RoHS Compliant: Yes |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 1 MM HEIGHT, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件頁數： | 13/20頁 |
| 文件大小： | 246K |
| 代理商： | LTC4210-2IS6 |
13
LTC4210-1/LTC4210-2
421012f
Circuit Breaker Timer Operation
When a current limit fault is encountered at time point A in
Figure 5, the circuit breaker timing is activated with a 60
μ
A
pull-up. The circuit breaker trips at time point B if the fault
is still present and the TIMER pin voltage reaches the
COMP2 threshold and the LTC4210 shuts down. For a
continuous fault, the circuit breaker delay is:
t
V
C
A
CBDELAY
TIMER
μ
60
=
1 3
.
(13)
Intermittent overloads may exceed the current limit as in
Figure 6, but if the duration is sufficiently short, the TIMER
pin may not reach the COMP2 threshold and the LTC4210
will not shut down. To handle this situation, the TIMER
discharges with 2
μ
A whenever (V
CC
– SENSE) voltage is
below the 50mV limit and the TIMER voltage is between
the COMP1 and COMP2 thresholds. When the TIMER
voltage falls below the COMP1 threshold, the TIMER pin is
discharged with an equivalent 7k resistor (normal mode,
100
μ
A source) when (V
CC
– SENSE) voltage is below the
50mV limit. If the TIMER pin does not drop below the
COMP1 threshold, any intermittent overload with an ag-
gregate duty cycle of more than 3.8% will eventually trip
the circuit breaker. Figure 7 shows the circuit breaker
response time in seconds normalized to 1
μ
F. The asym-
metric charging and discharging of TIMER is a fair gauge
of MOSFET heating.
t
C
s
F
V
F
A D
μ
60
A
TIMER
( /
)
.
–
μ
=
μ
(
)
μ
1 3
1
2
(14)
When the circuit breaker trips, the GATE pin is pulled low.
The TIMER enters latchoff mode with a 5
μ
A pull-up for the
LTC4210-2 (latched-off version), while an autoretry “cool-
off” cycle begins with a 2
μ
A pull-down for the LTC4210-1
(autoretry version). An autoretry cool-off delay of the
LTC4210-1 between COMP2 and COMP1 thresholds takes:
t
V
C
A
COOLOFF
TIMER
μ
2
=
1 1
.
(15)
APPLICATIOU
W
U
U
V
TIMER
NORMAL
MODE
Figure 5. A Continuous Fault Timing
FAULT
MODE
100
μ
A
COMP1
CIRCUIT BREAKER
TRIPS
LATCHED OFF (5
μ
A PULL-UP)
OR RETRY (2
μ
A PULL-DOWN)
COMP2
A
B
60
μ
A
4210 F05
OVERLOAD DUTY CYCLE, D (%)
10
N
μ
F
30
1
4210 F07
0.01
0.1
20
100
90
80
70
60
50
40
0
(s/
μ
F) =
t
C
TIMER
1.3V 1
μ
F
60
μ
A D – 2
μ
A
Figure 7. Circuit Breaker Timer Response
for Intermittent Overload
A1
B1
A2
B2
A3
B3
~50mV/R
SENSE
60
μ
A
CIRCUIT BREAKER
TRIPS
COMP1
LATCHED OFF (5
μ
A PULL-UP)
OR RETRY (2
μ
A PULL-DOWN)
4210 F06
COMP2
V
TIMER
I
LOAD
V
GATE
2
μ
A
CB
FAULT
CB
FAULT
CB
FAULT
2
μ
A
60
μ
A
60
μ
A
10
μ
A
10
μ
A
Figure 6. Mulitple Intermittent Overcurrent Conditon
相關PDF資料 |
PDF描述 |
|---|---|
| LTC4210-1IS6 | Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-2CS6 | Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-1 | Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-1CS6 | Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC4210-2 | Hot Swap Controller in 6-Lead SOT-23 Package |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:- 標準包裝:50 系列:- 類型:熱交換控制器 應用:-48V 遠程電力系統，AdvancedTCA ? 系統，高可用性 內部開關:無 電流限制:可調 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 |
| LTC4210-2IS6#TRM | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 T/R |
| LTC4210-2IS6#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，AdvancedTCA ? 系統，高可用性 內部開關:無 電流限制:可調 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 |
| LTC4210-2IS6#TRPBF | 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，AdvancedTCA ? 系統，高可用性 內部開關:無 電流限制:可調 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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