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参数资料
| 型号： | LTC4244IGN-1#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/28页 |
| 文件大小： | 337K |
| 描述： | IC CTRLR HOT SWAP CPCI 20-SSOP |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | CompactPCI? |
| 内部开关： | 无 |
| 电源电压： | 3.3V，5V，±12V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
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3
LTC4244/LTC4244-1
42441f
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
CL
Current Foldback
12V
IN
= 12V, 12V
OUT
= 0V, TIMER = 0V
q 100
360
1000
mA
12V
IN
= 12V, 12V
OUT
= 10V, TIMER = 0V
q
550
850
1500
mA
V
EEIN
= 12V, V
EEOUT
= 0V, TIMER = 0V
q
50
225
350
mA
V
EEIN
= 12V, V
EEOUT
= 10V, TIMER = 0V
q
350
610
870
mA
T
TS
Thermal Shutdown Temperature
Junction Temperature, Ramping Up
150
癈
V
TH
Power Good Threshold Voltage
12V
OUT
, Ramping Down
q
10.8
11.1
11.4
V
5V
OUT
, Ramping Down
q
4.50
4.61
4.75
V
3.3V
OUT
, Ramping Down
q
2.80
2.90
3.00
V
V
EEOUT
, Ramping Up, LTC4244 Only
q
10.8
11.1
11.4
V
V
IL
Logic Input Low Voltage
OFF/ON, RESETIN, FAULT
q
0.8
V
V
IH
Logic Input High Voltage
OFF/ON, RESETIN, FAULT
q
2
V
I
IN
OFF/ON, RESETIN Input Current
OFF/ON, RESETIN = 0V
q
?0
礎
OFF/ON, RESETIN = 12V
q
?0
礎
RESETOUT, FAULT Leakage
RESETOUT, FAULT = 5V, OFF/ON = 0V, RESETIN = 3.3V q
?0
礎
Current
PWRGD Output Current
PWRGD = 5V, OFF/ON = 4V
q
?0
礎
5V
SENSE
Input Current
5V
SENSE
= 5V, 5V
OUT
= 0V
q
57
100
礎
3.3V
SENSE
Input Current
3.3V
SENSE
= 3.3V, 3.3V
OUT
= 0V
q
56
100
礎
5V
IN
Input Current
5V
IN
= 5V, TIMER = 0V
q
0.8
1.5
mA
3.3V
IN
Input Current
3.3V
IN
= 3.3V, TIMER = FLOAT
q
510
700
礎
3.3V
IN
= 3.3V, TIMER = 0V
q
400
550
礎
5V
OUT
Input Current
5V
OUT
= 5V, OFF/ON = 0V, TIMER = 0V
q
107
200
礎
3.3V
OUT
Input Current
3.3V
OUT
= 3.3V, OFF/ON = 0V, TIMER = 0V
q
170
300
礎
PRECHARGE Input Current
V
PRECHARGE
= 1V
q
0.1
10
礎
I
TIMER
TIMER Pin Current
OFF/ON = 0V, V
TIMER
= 0V
q
16
21
26
礎
OFF/ON = 5V, V
TIMER
= 5V
q
25
45
70
mA
V
TIMER
TIMER Threshold Voltage
TIMER_HI, (V
12VIN
V
TIMER
), FAULT = 0V, Ramping Up q
1.3
1.6
1.9
V
TIMER_LO, V
TIMER
, Ramping Down
q
0.5
0.8
1.1
V
V
TIMER
External Timer Voltage
V
TIMER
= (V
12VIN
V
TIMER
), I
TIMER
= 1礎
q
1
V
R
DIS
12V
OUT
Discharge Resistance
OFF/ON = 4V
q
440
1000
&
5V
OUT
Discharge Resistance
OFF/ON = 4V
q
200
500
&
3.3V
OUT
Discharge Resistance
OFF/ON = 4V
q
200
500
&
V
EEOUT
Discharge Resistance
OFF/ON = 4V
q
390
1000
&
V
OL
Output Low Voltage
PWRGD, RESETOUT, FAULT, I = 1mA
q
0.4
V
V
PXG
PRECHARGE Reference Voltage
V
DRIVE
= 2V
q
0.95
1
1.05
V
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25?/SPAN>C. V
12VIN
= 12V, V
EEIN
= 12V, V
3.3VIN
= 3.3V, V
5VIN
= 5V, unless
otherwise noted.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: The 12V
IN
and V
EEIN
pins will withstand transient surges up to
?5V, respectively, upon hot insertion.
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