參數(shù)資料
型號(hào): LTC1421ISW-2.5#PBF
廠商: Linear Technology
文件頁(yè)數(shù): 3/24頁(yè)
文件大小: 329K
描述: IC CONTROLLER HOT SWAP 24-SOIC
標(biāo)準(zhǔn)包裝: 32
類型: 熱交換控制器
應(yīng)用: 通用
內(nèi)部開關(guān): 無(wú)
電源電壓: 3 V ~ 12 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC
包裝: 管件
3
LTC1421/LTC1421-2.5
Note 3: After power-on reset, the V
OUTLO
 and V
OUTHI
 have to drop below the
V
TRIP
 point before the charge pump is restarted.
Note 4: After power-on reset, the V
OUTLO
 has to drop below the V
TRIP
 point
before the charge pump is restarted.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:  All currents into device pins are positive; all currents out of device
pins are negative. All voltages are reference to ground unless otherwise
specified.
ELECTRICAL CHARACTERISTICS   The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
 = 25?/SPAN>C. V
CCHI
 = 12V, V
CCLO
 = 5V unless otherwise noted (Note 2).
SYMBOL   PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I
RAMP
RAMP Pin Output Current
Charge Pump On, V
RAMP
= 0.4V
q
11
17
23
礎(chǔ)
I
CP
Charge Pump Output Current
Charge Pump On, GATEHI = 0V
600
礎(chǔ)
GATELO = 0V
300
礎(chǔ)
V
GATEHI
GATEHI N-Channel Gate Drive
V
GATEHI
 V
OUTHI
6
16
V
V
GATELO
GATELO N-Channel Gate Drive
V
GATELO
 V
OUTLO
10
16
V
V
AUXVCC
Auxiliary V
CC
 Output Voltage
V
CCLO
= 5V, Unloaded
4.5
V
V
IL
Input Low Voltage
CON1, CON2, POR
q
0.8
V
V
IH
Input High Voltage
CON1, CON2, POR
q
2
V
I
IN
Input Current
CON1, CON2, POR = GND
q
30
60
90
礎(chǔ)
V
OL
Output Low Voltage
RESET, COMPOUT, PWRGD, DISABLE, FAULT,
q
0.4
V
I
O
= 3mA
CPON, I
O
= 3mA
q
1.45
V
V
OH
Output High Voltage
DISABLE, I
O
= 3mA
q
4
V
CPON, I
O
= 1mA
q
3.4
V
I
PU
Logic Output Pull-Up Current
RESET, PWRGD, FAULT = GND
15
礎(chǔ)
AC CHARACTERISTICS
t
1
CON1 or CON2?to CPON?/DIV>
Figure 1, C
L
= 15pF
q
15
20
30
ms
t
2
PWRGD?to RESET?/DIV>
Figure 1, R
L
= 10k to V
CCLO
, C
L
= 15pF
160
200
240
ms
q
140
200
280
ms
t
3
PWRGD?to DISABLE?/DIV>
Figure 1, C
L
= 15pF
160
200
240
ms
q
140
200
280
ms
t
4
POR?to CPON?/DIV>
Figure 1, C
L
= 15pF
q
15
20
30
ms
t
5
PWRGD?to RESET?/DIV>
Figure 1, R
L
= 10k to V
CCLO
, C
L
= 15pF
32
t
6
POR?to CPON?/DIV>
Figure 1, C
L
= 15pF
50
ns
t
7
CON1 or CON2?to CPON?/DIV>
Figure 1, C
L
= 15pF
50
ns
t
9
Short-Circuit Detect to FAULT?/DIV>
Figure 1, R
L
= 10k to V
CCLO
, C
L
= 15pF
20
V
CCLO
 SETLO = 0mV to 100mV
t
10
Short-Circuit Detect to CPON?/DIV>
Figure 2, C
L
= 15pF
20
V
CCLO
 SETLO = 0mV to 100mV
t
11
POR?to FAULT?/DIV>
Figure 2, R
L
= 10k to V
CCLO
, C
L
= 15pF
20
ns
t
CHL
Comparator High to Low
COMP

 = 1.232V, 10mV Overdrive
q
0.25
0.5
R
L
= 10k to V
CCLO
, C
L
= 15pF
t
CLH
Comparator Low to High
COMP

 = 1.232V, 10mV Overdrive
q
1
1.5
R
L
= 10k to V
CCLO
, C
L
= 15pF
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