參數(shù)資料
型號: LTC4252A-1IMS#TRPBF
廠商: Linear Technology
文件頁數(shù): 3/36頁
文件大?。?/td> 328K
描述: IC CNTRLR HOTSWAP NEGVOLT 10MSOP
標準包裝: 2,500
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開關(guān):
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 10-MSOP
包裝: 帶卷 (TR)
LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
3
425212fe
For more information www.linear.com/LTC4252-1
elecTrical characTerisTics
 
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
 = 25癈. (Note 2)
SYMBOL    PARAMETER
CONDITIONS
LTC4252-1/-2
LTC4252A-1/-2
UNITS
MIN
TYP    MAX    MIN
TYP    MAX
V
Z
V
IN
  V
EE
 Zener Voltage
I
IN
 = 2mA
l   11.5
13
14.5    11.5
13
14.5
V
r
Z
V
IN
  V
EE
 Zener Dynamic Impedance
I
IN
 = 2mA to 30mA
5
5
?/DIV>
I
IN
V
IN
 Supply Current
UV = OV = 4V , V
IN
 = (V
Z
 0.3V)
?/DIV>
0.8
2
0.9
2
mA
V
LKO
V
IN
Undervoltage Lockout
Coming Out of UVLO (Rising V
IN
)
?/DIV>
9.2
11.5
9
10
V
V
LKH
V
IN
Undervoltage Lockout Hysteresis
1
0.5
V
V
CB
Circuit Breaker Current Limit Voltage
V
CB
 = (V
SENSE
  V
EE
)
?/DIV>
40
50
60
45
50
55
mV
V
ACL
Analog Current Limit Voltage
V
ACL
 = (V
SENSE
  V
EE
),
SS = Open or 2.2V
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">    80
100
120
mV
V
ACL
/
V
CB
Analog Current Limit Voltage/
Circuit Breaker Voltage
V
ACL
 = (V
SENSE
  V
EE
),
SS = Open or 1.4V
?/DIV>
1.05    1.20    1.38
V/V
V
FCL
Fast Current Limit Voltage
V
FCL
 = (V
SENSE
  V
EE
)
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">    150
200
300
150
200
300
mV
V
SS
SS Voltage
After End of SS Timing Cycle
2.2
1.4
V
R
SS
SS Output Impedance
100
50
k?/DIV>
I
SS
SS Pin Current
UV = OV = 4V , V
SENSE
 = V
EE
,
V
SS
 = 0V (Sourcing)
22
28
礎(chǔ)
UV = OV = 0V , V
SENSE
 = V
EE
,
V
SS
 = 2V (Sinking)
28
  28
mA
V
OS
Analog Current Limit Offset Voltage
10
10
mV
V
ACL
+V
OS
/
 
V
SS
Ratio (V
ACL
 + V
OS
) to SS Voltage
0.05
0.05
V/V
I
GATE
GATE Pin Output Current
UV = OV = 4V , V
SENSE
 = V
EE
,
V
GATE
 = 0V (Sourcing)
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">    40
58
80
40
58
80
礎(chǔ)
UV = OV = 4V , V
SENSE
  V
EE
 = 0.15V ,
V
GATE
 = 3V (Sinking)
17
17
mA
UV = OV = 4V , V
SENSE
  V
EE
 = 0.3V ,
V
GATE
 = 1V (Sinking)
190
190
mA
V
GATE
External MOSFET Gate Drive
V
GATE
  V
EE
, I
IN
 = 2mA
?/DIV>
10
12
V
Z
10
12
V
Z
V
V
GATEH
Gate High Threshold
V
GATEH
 = V
IN
  V
GATE
, I
IN
 = 2mA,
for PWRGD Status (MS Only)
2.8
2.8
V
V
GATEL
Gate Low Threshold
(Before Gate Ramp-Up)
0.5
0.5
V
V
UVHI
UV Pin Threshold HIGH
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">   3.075   3.225   3.375
V
V
UVLO
UV Pin Threshold LOW
?/DIV>
2.775   2.925   3.075
V
V
UV
UV Pin Threshold
Low-to-High Transition
?/DIV>
3.05    3.08    3.11
V
V
UVHST
UV Pin Hysteresis
(?/SPAN> for LTC4252A Only)
?/DIV>
300
292
324
356
mV
V
OVHI
OV Pin Threshold HIGH
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">   5.85    6.15    6.45
V
V
OVLO
OV Pin Threshold LOW
?SPAN class="pst LTC4252A-1IMS-TRPBF_2350112_3">   5.25    5.55    5.85
V
V
OV
OV Pin Threshold
Low-to-High Transition
?/DIV>
5.04    5.09    5.14
V
V
OVHST
OV Pin Hysteresis
(?/SPAN> for LTC4252A Only)
?/DIV>
600
82
102
122
mV
I
SENSE
SENSE Pin Input Current
UV = OV = 4V , V
SENSE
 = 50mV
?/DIV>
 15
30
 15
30
礎(chǔ)
I
INP
UV , OV Pin Input Current
UV = OV = 4V
?/DIV>
?.1
?
?.1
?
礎(chǔ)
V
TMRH
TIMER Pin Voltage High Threshold
4
4
V
V
TMRL
TIMER Pin Voltage Low Threshold
1
1
V
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