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参数资料
| 型号： | LTC4244IGN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/28页 |
| 文件大小： | 337K |
| 描述： | IC CTRLR HOTSWAP PCI 20-SSOP |
| 标准包装： | 55 |
| 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： | 管件 |
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2
LTC4244/LTC4244-1
42441f
GN PACKAGE
20-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
12V
IN
V
EEIN
5V
OUT
TIMER
OFF/ON
FAULT
PWRGD
GND
RESETIN
RESETOUT
12V
OUT
V
EEOUT
3.3V
OUT
3.3V
IN
3.3V
SENSE
GATE
5V
SENSE
5V
IN
PRECHARGE
DRIVE
(Notes 1, 2, 3)
Supply Voltages
12V
IN
................................................................ 14.4V
V
EEIN
.............................................................. 14.4V
Input Voltages (OFF/ON, RESETIN) ........0.3V to 13.5V
Output Voltages (FAULT, PWRGD, RESETOUT)
...........................................................0.3V to 13.5V
Analog Voltages and Currents
5V
OUT
, DRIVE, 5V
IN
, 3.3V
SENSE
, 3.3V
IN
, 3.3V
OUT
, 5V
SENSE
...........................................................0.3V to 13.5V
PRECHARGE, GATE....................................... ?0mA
V
EEOUT
................................................14.4V to 0.3V
TIMER, 12V
OUT
...........................................0.3V to 14.4V
Operation Temperature Range
LTC4244C/LTC4244C-1...........................0癈 to 70癈
LTC4244I/LTC4244I-1........................ 40癈 to 85癈
Storage Temperature Range ................. 65癈 to 150癈
Lead Temperature (Soldering, 10 sec)..................300癈
ORDER PART
NUMBER
LTC4244CGN
LTC4244CGN-1
LTC4244IGN
LTC4244IGN-1
T
JMAX
= 140癈, ?/DIV>
JA
= 135癈/W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
DD
V
12VIN
Supply Current
OFF/ON = 0V
q
4
10
mA
V
LKO
Undervoltage Lockout
12V
IN
, Ramping Down
q
8
9
10
V
5V
IN
, Ramping Down
q
4
4.25
4.5
V
3.3V
IN
, Ramping Down
q
2.25
2.5
2.75
V
V
EEIN
, Ramping Up (LTC4244 Only)
q
8.25
9.25
10.25
V
TIMER, Ramping Down, V
12VIN
= 6V
q
8.25
9.25
10.25
V
V
FB
Foldback Current Limit Voltage
V
FB
= (V
5VIN
V
5VSENSE
), V
5VOUT
= 0V, TIMER = 0V
q
11
16
21
mV
V
FB
= (V
5VIN
V
5VSENSE
), V
5VOUT
= 3V, TIMER = 0V
q
46
51
56
mV
V
FB
= (V
3.3VIN
V
3.3VSENSE
), V
3.3VOUT
= 0V, TIMER = 0V q
11
16
21
mV
V
FB
= (V
3.3VIN
V
3.3VSENSE
), V
3.3VOUT
= 2V, TIMER = 0V q
46
51
56
mV
V
CB
Circuit Breaker Trip Voltage
V
CB
= (V
5VIN
V
5VSENSE
), TIMER = FLOAT
q
45
52
57
mV
V
CB
= (V
3.3VIN
V
3.3VSENSE
), TIMER = FLOAT
q
45
52
57
mV
t
OC
Overcurrent Fault Response Time (V
5VIN
V
5VSENSE
) = 100mV, TIMER = FLOAT
q
17
25
35
祍
(V
3.3VIN
V
3.3VSENSE
) = 100mV, TIMER = FLOAT
q
17
25
35
祍
I
GATE(UP)
GATE Pin Output Current
OFF/ON = 0V, V
GATE
= 2V, TIMER = 0V
q
20
67
100
礎
I
GATE(DN)
V
GATE
= 5V, OFF/ON = 4V
q
20
60
100
礎
I
GATE(FAULT)
OFF/ON = 0V, V
GATE
= 2V, TIMER = FLOAT, FAULT = 0V
q
4
8
16
mA
V
GATE
External Gate Voltage
V
GATE
= (V
12VIN
V
GATE
), I
GATE
= 1礎
q
0.6
1
V
V
12V
Internal Switch Voltage Drop
V
12V
= (V
12VIN
V
12VOUT
), I = 500mA
q
225
600
mV
V
VEE
V
VEE
= (V
EEOUT
V
EEIN
), I
EE
= 100mA
q
110
250
mV
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ABSOLUTE AXI U RATI GS
W
W
U
PACKAGE/ORDER I FOR ATIO
U
W
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4244IGNTR | 制造商:Linear Technology 功能描述: |
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