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| 型号： | LTC4253ACGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/34页 |
| 文件大小： | 383K |
| 描述： | IC HOT SWAP CONTRLR -48V 16-SSOP |
| 标准包装： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 8.2 V ~ 14.5 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
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LTC4253/LTC4253A
4
425353aff
For more information www.linear.com/4253
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25癈.
SYMBOL PARAMETER
CONDITIONS
LTC4253
LTC4253A
UNITS
MIN TYP MAX MIN TYP MAX
V
OV
OV Pin Threshold
OV Low to High
?/DIV>
5.04 5.09 5.14
V
V
OVHST
OV Pin Hysteresis
?/DIV>
230 300 350
82
102
122
mV
mV
I
SENSE
SENSE Pin Input Current
UV = 0V = 4V , V
SENSE
= 50mV
(Sourcing)
?/DIV>
15
30
15
30
礎
I
INP
UV , OV Pin Input Current
UV = OV = 4V
?/DIV>
?.1 ?
?.1 ?
礎
V
TMRH
TIMER Pin Voltage High Threshold
?SPAN class="pst LTC4253ACGN-TRPBF_2330559_3"> 3.5
4
4.5
3.5
4
4.5
V
V
TMRL
TIMER Pin Voltage Low Threshold
?SPAN class="pst LTC4253ACGN-TRPBF_2330559_3"> 0.8
1
1.2
0.8
1
1.2
V
I
TMR
TIMER Pin Current
Timer On (Initial Cycle/Latchoff,
Sourcing), V
TMR
= 2V
?/DIV>
3
5
7
3
5
7
礎
Timer Off (Initial Cycle, Sinking),
V
TMR
= 2V
28
28
mA
Timer On (Circuit Breaker, Sourcing,
I
DRN
= 0礎), V
TMR
= 2V
?SPAN class="pst LTC4253ACGN-TRPBF_2330559_3"> 120 200 280 120 200 280
礎
Timer On (Circuit Breaker, Sourcing,
I
DRN
= 50礎), V
TMR
= 2V
600
600
礎
Timer Off (Circuit Breaker, Sinking),
V
TMR
= 2V
?/DIV>
3
5
7
3
5
7
礎
I
TMRACC
I
DRN
I
TMR
at I
DRN
= 50礎 I
TMR
at I
DRN
= 0礎
50礎
Timer On (Circuit Breaker with
I
DRN
= 50礎)
?/DIV>
7
8
9
7
8
9
礎/礎
V
SQTMRH
SQTIMER Pin Voltage High Threshold
?SPAN class="pst LTC4253ACGN-TRPBF_2330559_3"> 3.5
4
4.5
3.5
4
4.5
V
V
SQTMRL
SQTIMER Pin Voltage Low Threshold
0.33
0.33
V
I
SQTMR
SQTIMER Pin Current
SQTIMER On (Power Good
Sequence, Sourcing), V
SQTMR
= 2V
?/DIV>
3
5
7
3
5
7
礎
SQTIMER Off (Power Good
Sequence, Sinking), V
SQTMR
= 2V
28
28
mA
V
DRNL
DRAIN Pin Voltage Low Threshold
For PWRGD1, PWRGD2, PWRGD3 Status
?/DIV>
2
2.39
3
2
2.39
3
V
I
DRNL
DRAIN Leakage Current
V
DRAIN
= 5V
V
DRAIN
= 4V
?.1 ?
?.1
?
礎
礎
V
DRNCL
DRAIN Pin Clamp Voltage
I
DRN
= 50礎
?/DIV>
6
7
8.5
5
6
7.5
V
V
PGL
PWRGD1, PWRGD2, PWRGD3
Output Low Voltage
I
PG
= 1.6mA
I
PG
= 5mA
?
?/DIV>
0.25 0.4
1.2
0.25 0.4
1.2
V
V
I
PGH
PWRGD1, PWRGD2, PWRGD3
Output High Current
V
PG
= 0V (Sourcing)
?SPAN class="pst LTC4253ACGN-TRPBF_2330559_3"> 30
50
70
30
50
70
礎
t
SQ
SQTIMER Default Ramp Period
SQTIMER Pin Floating,
V
SQTMR
Ramps from 0.5V to 3.5V
250
250
祍
t
SS
SS Default Ramp Period
SS Pin Floating, V
SS
Ramps from 0.2V to 2V
SS Pin Floating, V
SS
Ramps from 0.2V to 1.25V
250
140
祍
祍
t
PLLUG
UV Low to GATE Low
?/DIV>
0.4
5
0.4
5
祍
t
PHLOG
OV High to GATE Low
?/DIV>
0.4
5
0.4
5
祍
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to V
EE
unless otherwise
specified.
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