参数资料
型号: LTC4245IG#TRPBF
厂商: Linear Technology
文件页数: 3/36页
文件大小: 431K
描述: IC CNTRLR HOT SWAP 36-SSOP
标准包装: 1,000
类型: 热交换控制器
应用: CompactPCI?
内部开关:
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: 36-SSOP(0.209",5.30mm 宽)
供应商设备封装: 36-SSOP
包装: 带卷 (TR)
LTC4245
3
4245fa
 
The ?/SPAN> denotes the speci cations which apply over the full operating temperature
range, otherwise speci cations are at T
A
 = 25癈. V
12VIN
 = 12V, V
5VIN
 = 5V, V
3VIN
 = 3.3V, V
VEEIN
 = 12V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
I
DD
Input Supply Current
12V
IN
5V
IN
3V
IN
,
 
PRECHARGE Open
V
EEIN
?/DIV>
?/DIV>
?/DIV>
?/DIV>
3
0.5
0.6
0.5
5
1
1
1
mA
mA
mA
mA
V
UVL
Supply Undervoltage Lockout
12V
IN
5V
IN
, V
CFG
 = 0V, Open
5V
IN
 When V
CFG
 = V
CC
, 3V
IN
V
EEIN
, V
CFG
 = 0V
V
CC
 Falling
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
10.2
4.25
2.7
10.2
3.4
10.5
4.38
2.8
10.5
3.8
10.8
4.5
2.9
10.8
4.2
V
V
V
V
V
V
CC
Internal Regulator Voltage
?/DIV>
5
5.5
6
V
Current Limit
SNS(CB)
Circuit Breaker Trip Sense Voltage
    (V
12VIN
  V
12VSENSE
)
    (V
5VIN
  V
5VSENSE
)
    (V
3VIN
  V
3VSENSE
)
    (V
VEESENSE
  V
VEEIN
)
After Start-Up
?/DIV>
?/DIV>
?/DIV>
?/DIV>
45
22.5
22.5
40
50
25
25
50
55
27.5
27.5
60
mV
mV
mV
mV
SNS(ACL)
Active Current Limit Sense Voltage
    (V
12VIN
  V
12VSENSE
)
    (V
5VIN
  V
5VSENSE
)
    (V
3VIN
  V
3VSENSE
)
    (V
VEESENSE
  V
VEEIN
)
After Start-Up
?/DIV>
?/DIV>
?/DIV>
?/DIV>
130
60
60
130
150
75
75
150
170
90
90
170
mV
mV
mV
mV
SNS(FBL)
,
SNS(FBH)
Foldback Current Limit Sense Voltage
    (V
12VIN
  V
12VSENSE
)
    (V
5VIN
  V
5VSENSE
)
    (V
3VIN
  V
3VSENSE
)
    (V
VEESENSE
  V
VEEIN
)
Start-Up, V
TIMER
 = 0V
V
12VOUT
 = 0V
V
12VOUT
 = 12V
V
5VOUT
 = 0V
V
5VOUT
 = 5V
V
3VOUT
 = 0V
V
3VOUT
 = 3.3V
V
VEEOUT
 = 0V
V
VEEOUT
 = 12V
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
10
40
4
22
4
22
11
40
15
50
7.5
25
7.5
25
16
50
20
60
11
29
11
29
21
60
mV
mV
mV
mV
mV
mV
mV
mV
Gate Drive
GATE
Gate Drive
Gate to Source
?/DIV>
5
6.2
7.5
V
I
GATE(UP)
Gate Pull-Up Current
Gate Drive On, 擵
GATE
 = 0V
?/DIV>
16
20
24
I
GATE(DN)
Gate Pull-Down Current
    12V
GATE
, 5V
GATE
, 3V
GATE
,
    V
EEGATE
Gate Drive Off, 擵
GATE
 = 5V
V
OUT
= V
IN
V
VEEGATE
 = 7V
?/DIV>
?/DIV>
0.9
1.7
1.3
3.5
1.7
5.3
mA
mA
I
GATE(FST)
Gate Fast Pull-Down Current
    12V
GATE
, 5V
GATE
    3V
GATE
    V
EEGATE
Fast Turn Off, 擵
GATE
 = 5V
V
12VGATE
 = 17V, V
5VGATE
 = 10V
V
3VGATE
 = 8.3V
V
VEEGATE
= 7V
?/DIV>
?/DIV>
?/DIV>
125
155
32
250
310
65
375
465
98
mA
mA
mA
Input/Output Pins
V
ON, BD_SEL#(TH)
ON, BD_SEL# Pin Threshold Voltage
V
ON
 Rising, V
BD_SEL#
 Rising
?/DIV>
1.21
1.235
1.26
V
ON, BD_SEL#(HYST)
ON, BD_SEL# Pin Hysteresis
?/DIV>
70
120
170
mV
I
BD_SEL#(UP)
BD_SEL# Pull-Up Current
V
BD_SEL#
 = 0V
?/DIV>
7
10
16
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