參數(shù)資料
型號: LTC4280CUFD#PBF
廠商: Linear Technology
文件頁數(shù): 3/28頁
文件大小: 291K
描述: IC CONTROLLER HOT SWAP QFN-24
標(biāo)準(zhǔn)包裝: 73
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開關(guān):
電源電壓: 2.9 V ~ 15 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 24-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 24-QFN(5x4)
包裝: 管件
LTC4280
3
4280f
 ELECTRICAL CHARACTERISTICS
 
The l denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
A
 = 25癈. V
DD
 = 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
V
DD
Input Supply Range
l
2.9
15
V
V
OV(VDD)
Input Supply Overvoltage Threshold
l
15
15.6
16.5
V
I
DD
Input Supply Current
l
3
5
mA
V
DD(UVL)
Input Supply Undervoltage Lockout
V
DD
 Rising
l
2.75
2.84
2.89
V
V
DD(HYST)
Input Supply Undervoltage Lockout Hysteresis
l
75
100
125
mV
INTV
CC
Internal Regulator Voltage
V
DD
 e 3.3V
l
2.9
3.1
3.4
V
INTV
CC(UVL)
INTV
CC
 Undervoltage Lockout
INTV
CC
 Rising
l
2.55
2.64
2.79
V
INTV
CC(HYST)
INTV
CC
 Undervoltage Lockout Hysteresis
l
20
55
75
mV
Current Limit and Circuit Breaker
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
SENSE(TH)
Circuit Breaker Threshold (V
DD
  V
SENSE
)
l
22.5
25
27.5
mV
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
SENSE
Current Limit Voltage (V
DD
  V
SENSE
)
V
FB
 = 1.3V
V
FB
 = 0V
l
l
22.5
7
26
10
29.5
13.5
mV
mV
I
SENSE(IN)
SENSE +/ Input Current
V
SENSE
 = 12V
l
10
20
35
Gate Drive
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
GATE
External N-Channel Gate Drive (V
GATE
  V
SOURCE
)
(Note 3)
V
DD
 = 2.9V to 15V
l
4.7
5.9
6.5
V
I
GATE(UP)
External N-Channel Gate Pull-Up Current
Gate On, V
GATE
 = 0V
l
15
20
30
I
GATE(DN)SLOW
External N-Channel Gate Pulldown Current
Gate Off, V
GATE
 = 15V
l
0.8
1
1.6
mA
I
GATE(DN)FAST
Pulldown Current From GATE to SOURCE
During OC/UVLO
V
DD
  SENSE = 100mV, V
GS
 = 4V
l
300
450
700
mA
t
PHL(SENSE)
(V
DD
  SENSE) High to GATE Low
V
DD
  SENSE = 100mV, C
GS
 = 10nF
l
0.5
1
V
GS(POWERBAD)
Gate-Source Voltage for Power Bad Fault
V
SOURCE
 = 2.9V  15V
l
3.8
4.3
4.7
V
Comparator Inputs
V
ON(TH)
ON Pin Threshold Voltage
V
ON
 Rising
l
1.210
1.235
1.26
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
ON(HYST)
ON Pin Hysteresis
l
60
128
180
mV
I
ON(IN)
ON Pin Input Current
V
ON
 = 1.2V
l
0
?
V
EN(TH)
EN Input Threshold
V
EN
 = Rising
l
1.215
1.235
1.255
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
EN(HYST)
EN Hysteresis
l
50
128
200
mV
I
EN
EN Pin Input Current
EN = 3.5V
l
0
?
V
OV(TH)
OV Pin Threshold Voltage
V
OV
 Rising
l
1.215
1.235
1.255
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
OV(HYST)
OV Pin Hysteresis
l
10
30
40
mV
I
OV(IN)
OV Pin Input Current
V
OV
 = 1.8V
l
0
?
V
UV(TH)
UV Pin Threshold Voltage
V
UV
 Rising
l
1.215
1.235
1.255
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
UV(HYST)
UV Pin Hysteresis
l
60
80
100
mV
I
UV(IN)
UV Pin Input Current
V
UV
 = 1.8V
l
0
?
V
UV(RTH)
UV Pin Reset Threshold Voltage
V
UV
 Falling
l
0.33
0.4
0.47
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
UV(RHYST)
UV Pin Reset Threshold Hysteresis
l
60
125
210
mV
V
FB
Foldback Pin Power Good Threshold
FB Rising
l
1.215
1.235
1.255
V
?SPAN class="pst LTC4280CUFD-PBF_2627973_7">V
FB(HYST)
FB Pin Power Good Hysteresis
l
3
8
15
mV
I
FB
Foldback Pin Input Current
FB = 1.8V
l
0
?
V
GPIO(TH)
GPIO Pin Input Threshold
V
GPIO
 Rising
l
0.8
1
1.2
V
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