參數(shù)資料
型號: LTC1647-1IS8#TRPBF
廠商: Linear Technology
文件頁數(shù): 3/22頁
文件大?。?/td> 239K
描述: IC CONTROLLR HOTSWAP DUAL 8-SOIC
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):
電源電壓: 2.7 V ~ 16.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
LTC1647-1/
LTC1647-2/LTC1647-3
3
1647fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings 
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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: An internal Zener on the GATE pins clamp the charge pump 
voltage to a typical maximum operating voltage of 28V . External overdrive
SYMBOL  PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
V
CCX
 Supply Range
Operating Range
l    2.7
16.5
V
I
CC
V
CC
 Supply Current (Note 4)
ON1, ON2 = V
CC1
 = V
CC2
, I
CC
 = I
CC1
 + I
CC2
l
1.0
6
mA
I
CCX
V
CCX
 Supply Current (Note 5, LTC1647-3)
ONX = V
CCX
, I
CCX
 Individually Measured,
V
CC1
 = 5V , V
CC2
 = 12V or V
CC1
 = 12V , V
CC2
 = 5V
l
0.5
5
mA
V
LKO
V
CCX
 Undervoltage Lockout
Coming Out of UVLO (Rising V
CCX
)
l
2.30
2.45
2.60
V
V
LKH
V
CCX
 Undervoltage Lockout Hysteresis
210
mV
V
CB
Circuit Breaker Trip Voltage
V
CB
 = V
CCX
  V
SENSEX
l
40
50
60
mV
I
CP
GATEX Output Current
ONX High, FAULTX High, V
GATE
 = GND (Sourcing)
ONX Low, FAULTX High, V
GATE
 = V
CC
 (Sinking)
ONX High, FAULTX Low, V
GATE
 = 15V (Sinking)
l
6
10
50
50
14
mA
GATE
External MOSFET Gate Drive
(V
GATE
  V
CC
), V
CC1
 = V
CC2
 = 5V
(V
GATE
  V
CC
), V
CC1
 = V
CC2
 = 12V
l
l
10
10
13
15
17
19
V
V
V
ONHI
ONX Threshold High
l
1.20
1.29
1.38
V
V
ONLO
ONX Threshold Low
l
1.17
1.21
1.25
V
V
ONHYST
ONX Hysteresis
70
mV
I
IN
ONX Input Current
ON = GND or V
CC
l
?
?0
V
OL
FAULTX Output Low Voltage
(LTC1647-2, LTC1647-3)
I
O
 = 1mA, V
CC
 = 5V
I
O
 = 5mA, V
CC
 = 5V
l
0.8
0.4
V
V
I
LEAK
FAULTX Output Leakage Current
(LTC1647-3)
No Fault, FAULTX = V
CC
 = 5V
?
?0
t
FAULT
Circuit Breaker Delay Time
V
CCX
  V
SENSEX
 = 0 to 100mV
0.3
t
RESET
Circuit Breaker Reset Time
ONX High to Low, to FAULTX High
l
50
100
t
ON
Turn-On Time
ONX Low to High, to GATEX On
2
t
OFF
Turn-Off Time
ONX High to Low, to GATEX Off
1
 
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
 = 25癈.
of the GATE pin beyond the internal Zener voltage may damage the device.
The GATE capacitance must be <0.15糉 at maximum V
CC
. If a lower GATE
pin clamp voltage is desired, use an external Zener diode.
Note 4: The total supply current I
CC
 is measured with V
CC1
 and V
CC2
 
connected internally (LTC1647-1, LTC1647-2) or externally (LTC1647-3).
Note 5: The individual supply current I
CCX
 is measured on the LTC1647-3.
The lower of the two supplies, V
CC1
 and V
CC2
, will have its channels
current. The higher supply will carry the additional supply current of the
charge pump and the bias generator beside its channels current.
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