- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377777 > LTC4221CGN (LINEAR TECHNOLOGY CORP) Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection PDF資料下載
參數(shù)資料
| 型號： | LTC4221CGN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁數(shù)： | 17/28頁 |
| 文件大?。?/td> | 311K |
| 代理商： | LTC4221CGN |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁當前第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
17
LTC4221
4221f
duty cycle of more than 1.8% will eventually trip the circuit
breaker. Figure 8 shows the circuit breaker response time
in seconds normalized to 1
μ
F. The asymmetric charging and
discharging of FILTER is a fair gauge of MOSFET heating.
t
C
F
A D
FILTER
μ
(
μ
(
V
–1 8
A
)
=
)
μ
1 24
.
105
(2)
The fast comparators trip the circuit breaker to protect
against fast load overcurrents if V
RSENSE
is greater than
V
SENSE(FC)
(100mV) for 1
μ
s. The response time of each fast
comparator is fixed at 1
μ
s nominal. The timing diagram in
Figure 9 illustrates the operation of the LTC4221 when the
load current conditions cause V
RSENSE
of channel 1 to ex-
ceed 100mV for more than 1
μ
s between time points 7 and
8. Figure 9 also illustrates when the LTC4221’s electronic
circuit breaker is armed. After the initial timing cycle, it is
armed at time point 3. Arming the circuit breaker at time
point 3 ensures that the system is protected against an over-
current condition during the channel start-up cycle. At time
point 4, the slow comparators are armed when the internal
control loop is disengaged.
Autoretry After a Fault
Once the LTC4221 circuit breaker is tripped, FAULT is
latched low and both GATE pins are pulled to ground. To
clear the internal FAULT latch and to restart the LTC4221,
its ON1 pin must be pulsed below its reset threshold
(V
ON(RESET)
= 0.4V) for at least 15
μ
s.
APPLICATIOU
W
U
U
TIMER
FAULT
FILTER
ONn
0.851V
GATEn
SENSEn
V
OUTn
RESET
INITIAL TIMING
2
1
1.9
μ
A
V
TMR(L)
V
TMR(H)
ELECTRONIC CIRCUIT BREAKER ARMED
SLOW COMPARATORS ARMED
3
20
μ
A
20
μ
A
1.8
μ
A
0.4V
105
μ
A
9.5
μ
A
V
FILTER(TH)
V
SENSE(FC)
V
SENSE(SC)
4 5
6 7
8
9
RESET
4221 F09
CHANNEL
START-UP
NORMAL
FAULT
Figure 9. Fast Comparator Trip Timing Waveforms
Figure 8. Circuit Breaker Filter Response
for Intermittent Overload
OVERLOAD DUTY CYCLE, D (%)
N
μ
F
1
0.01
0.1
0
10 20 30 40 50 60 70 80 90 100
4221 F08
t
C
FILTER
(
μ
F)
1.24V
105 D – 1.8
=
相關PDF資料 |
PDF描述 |
|---|---|
| LTC4221IGN | Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection |
| LTC4221 | Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection |
| LTC4240 | CompactPCI Hot Swap Controller with I2C Compatible Interface |
| LTC4240IGN | CompactPCI Hot Swap Controller with I2C Compatible Interface |
| LTC4240CGN | CompactPCI Hot Swap Controller with I2C Compatible Interface |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC4221CGN#PBF | 功能描述:IC CTLR HOT SWAP DUAL 16SSOP RoHS:是 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 內部開關:是 電流限制:可調 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 |
| LTC4221CGN#TR | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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 內部開關:是 電流限制:可調 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 |
| LTC4221CGN#TRPBF | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP RoHS:是 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 內部開關:是 電流限制:可調 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 |
| LTC4221IGN | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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 內部開關:是 電流限制:可調 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 |
| LTC4221IGN#PBF | 功能描述:IC CTRLR HOTSWAP DUAL 16SSOP 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 內部開關:是 電流限制:可調 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。