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参数资料
| 型号： | LTC1645IS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 329K |
| 描述： | IC CTLR HOT SWAP SEQ DUAL 8-SOIC |
| 标准包装： | 100 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1.2 V ~ 12 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
3
LTC1645
1645fa
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
TM
TIMER Pin Voltage Threshold
q 1.212
1.230
1.255
V
V
TM
TIMER Pin Threshold Line Regulation V
CC1
= 2.375V to 12V
q
1
9
mV
I
TM
TIMER Pin Current
Timer On, V
TIMER
= 0.6V, V
CC1
= 5V
q
2.3
2
1.7
礎
Timer Off, V
TIMER
= 1.5V
12
mA
V
CB1
Circuit Breaker Trip Voltage 1
V
CB1
= (V
CC1
V
SENSE1
)
q
46
50
56
mV
V
CB2
Circuit Breaker Trip Voltage 2
V
CB2
= (V
CC2
V
SENSE2
)
q
46
50
56
mV
t
CBDn
Circuit Breaker Trip Delay
V
CBn
= (V
CCn
V
SENSEn
) > 60mV
1.5
祍
I
CP
GATEn Pin Output Current
ON = 2.2V, V
GATEn
= V
CCn
, V
CC1
= 5V, V
CC2
= 3.3V
q
12.5
10
7.5
礎
ON = 0.7V, V
GATEn
= V
CCn
, V
CC1
= 5V, V
CC2
= 3.3V
q
30
40
50
礎
ON = 0.3V, V
GATEn
= V
CCn
, V
CC1
= 5V, V
CC2
= 3.3V
12
mA
I
SENSE
SENSE Pin Current
V
CCn
0.3V d V
SENSEn
d V
CCn
+ 0.3V
q
10
10
礎
V
GATEn
External N-Channel Gate Drive
V
SENSE
= V
CC
0.5V
q
4.5
16
V
V
ONFPD
ON Pin Fast Pull-Down Threshold
Low to High
q
0.375
0.4
0.425
V
High to Low, Fast Pull-Down Engaged
q
0.35
0.375
0.4
V
V
ON1
ON Pin Threshold #1
Low to High, GATE1 Turns On
q
0.8
0.825
0.85
V
High to Low, GATE1 Turns Off
q
0.775
0.8
0.825
V
V
ON2
ON Pin Threshold #2
Low to High, GATE2 Turns On
q
2
2.025
2.050
V
High to Low, GATE2 Turns Off
q
1.975
2
2.025
V
V
ONHYST
ON Pin Hysteresis
25
mV
I
ON
ON Pin Input Current
V
CC1
= 5V, V
CC2
= 3.3V
q
?.01
?
礎
V
OL
Output Low Voltage
RESET, FAULT, COMPOUT, I
OUT
= 1.6mA, V
CC1
= 5V q
0.16
0.4
V
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 referenced to ground unless otherwise
specified.
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25?/SPAN>C.
2.375V d V
CC1
d 12V, 1.2V d V
CC2
d 12V unless otherwise noted (Note 2).
Note 3: An internal zener on the GATEn pins clamps the charge pump
voltage to a typical maximum operating voltage of 22V. External overdrive
of a GATE pin (for example, from capacitive coupling of V
CCn
glitches)
beyond the internal zener voltage may damage the device. If a lower
GATEn pin clamp voltage is desired, use an external zener diode.
V
CC1
Supply Current vs Voltage
V
CC2
Supply Current vs Voltage
V
CC1
(V)
0
1.0
2.0
3.0
0.5
1.5
2.5
4
6
8
10
1645 G01
12
3
2
5
7
9
11
T
A
= 25癈
V
CC2
= 1.5V
V
CC2
= 12V
V
CC2
(V)
0
0.5
1.5
2.0
2.5
3.5
1
5
7
1645 G02
1.0
3.0
4
9 10 11 12
2
3
6
8
T
A
= 25癈
V
CC1
= 2.375V
V
CC1
= 12V
Supply Current vs Temperature
TEMPERATURE (癈)
40
0.8
1.0
1.4
20
60
1 4
0.6
0.4
20 0
40
80 100
0.2
0
1.2
V
CC1
= 5V
V
CC2
= 3.3V
I
CC1
I
CC2
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
W
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