參數(shù)資料
型號： LTC4221
廠商： Linear Technology Corporation
元件分類： 基準電壓源/電流源
英文描述： Dual Hot Swap Controller/ Power Sequencer with Dual Speed, Dual Level Fault Protection
中文描述： 雙熱插拔控制器/電源與雙速序列，雙級故障保護
文件頁數(shù)： 3/28頁
文件大?。?/td> 311K
代理商： LTC4221
3
LTC4221
4221f
SYMBOL
V
ON(OFF)
PARAMETER
ONnOff Threshold
CONDITIONS
High to Low, GATEnTurns Off by 100
μ
A
Pull-Down
MIN
0.796
TYP
0.821
MAX
0.846
UNITS
●
V
V
ON(OFFHYST)
I
FB(IN)
V
FB(UV)
V
FB(UVHYST)
V
FB(LREG)
V
FB(OV)
I
FILTER(UP)
I
FILTER(DN)
V
FILTER(TH)
V
FILTER(HYST)
I
TMR(UP1)
I
TMR(UP2)
I
TMR(FSTDN)
V
TMR(H)
V
TMR(L)
I
FAULT(UP)
V
FAULT(TH)
V
FAULT(HYST)
V
FAULT(OL)
I
PWRGD(LK)
V
PWRGD(OL)
ONnOff Threshold Hysteresis
FBnInput Current
FBnUndervoltage Threshold
FBnUndervoltage Threshold Hysteresis
FBnThreshold Line Regulation
FBnOvervoltage Threshold
FILTER Pull-Up Current
FILTER Pull-Down Current
FILTER Threshold
FILTER Threshold Hysteresis
TIMER Pull-Up Current 1
TIMER Pull-Up Current 2
TIMER Pull-Down Current
TIMER High Threshold
TIMER Low Threshold
FAULT Pull-Up Current
FAULT Threshold
FAULT Hysteresis
FAULT Output Low Voltage
PWRGDnLeakage Current
PWRGDnOutput Low Voltage
30
mV
μ
A
0V
≤
V
FBn
≤
V
CCn
FBnFalling
●
±
0.01
0.617
3
2
0.822
–105
1.8
1.24
105
–1.9
–20
9
1.234
0.4
–3.8
0.816
35
0.14
±
0.01
0.14
±
1
●
0.605
0.629
V
mV
mV
2.7V
≤
V
CC1
≤
13.5V
FBnRising
During Current Fault Condition
During Normal Cycle
Latched Off Threshold, FILTER Rising
●
0.805
–80
1.15
1.18
0.838
–132
2.45
1.30
V
●
μ
A
μ
A
V
mV
μ
A
μ
A
mA
●
●
Initial Timing Cycle
Start-Up Cycle
V
TIMER
= 1.5V, End of Initial Timing Cycle
TIMER Rising
TIMER Falling
●
–1.2
–15
–2.6
–25
●
●
1.172
0.1
–2.5
0.791
1.27
0.5
–5
0.841
V
V
●
●
μ
A
V
mV
FAULT Falling
●
I
FAULT
= 1.6mA, V
CC1
= 5V
V
PWRGDn
= V
CC1
, V
FBn
= 0.7V, Normal Cycle
I
PWRGDn
= 1.6mA, V
CC1
= 5V, V
FBn
= 0V,
Normal Cycle
V
SENSEn
= V
CCn
to (V
CCn
– 200mV) Step
●
0.4
±
10
0.4
V
●
μ
A
V
●
t
P(FC-GATE)
Fast Comparator Trip to GATEn
Discharging
Slow Comparator Trip to FILTER
High and FAULT Latched
FAULT Low to GATEnDischarging
FBnOV Comparator Trip to GATEn
Discharging
Filter Comparator Trip to GATEn
Discharging
Circuit Breaker Reset Delay Time
Turn Off Propagation Delay
●
1
1.5
μ
s
t
P(SC-FAULT)
V
SENSEn
= V
CCn
to (V
CCn
– 50mV) Step.
FILTER Open
V
FAULT
= 3.3V to 0V
V
FBn
= 0V to 1V
●
15
35
μ
s
t
P(FAULT-GATE)
t
P(OV-GATE)
●
15
18
35
35
μ
s
μ
s
●
t
P(FILTER-GATE)
V
FILTER
= 0V to 1.5V
●
15
35
μ
s
t
RESET
t
P(ON-GATE)
V
ON1
< 0.4V to FAULT High
V
ONn
≤
0.821V to GATEn Discharging
●
15
15
30
35
μ
s
μ
s
●
The
●
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
°
C. V
CC1
= 5V, V
CC2
= 3.3V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
All current into device pins are positive. All voltages are referenced
to ground unless otherwise specified.
Note 3:
An internal zener on each GATE pin clamps the charge pump
voltage to a typical maximum operating voltage of 26V. External overdrive
of either GATE pin beyond its internal zener voltage may damage the
device.
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LTC4221CGN 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(guān) 應用:通用 內(nèi)部開關(guān):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
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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(guān) 應用:通用 內(nèi)部開關(guān):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
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