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| 型号： | LTC4230IGN#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/36页 |
| 文件大小： | 384K |
| 描述： | IC CONTRLLR HOT SWAP TRPL 20SSOP |
| 标准包装： | 2,500 |
| 类型： | 热交换控制器 |
| 应用： | 通用 |
| 内部开关： | 无 |
| 电源电压： | 1.7 V ~ 16.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | LTC4230IGNTR |
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3
LTC4230
4230f
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25?/SPAN>C. V
CC1
= 3.3V, V
CC2
= 2.5V,V
CC3
= 1.8V unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
V
GATEn
External N-Channel Gate Drive
V
GATE1, 2
V
CC1, 2
(for V
CC1, 2
= 2.7V, V
CC3
= V
CC1
1V) q
4.5
8
V
V
GATE3
V
CC3
(for V
CC1, 2
= 2.7V, V
CC3
= V
CC1
1V)
q
5.5
9
V
V
GATE1, 2
V
CC1, 2
(for V
CC1, 2
= 3.3V, V
CC3
= V
CC1
1V) q
5
10
V
V
GATE3
V
CC3
(for V
CC1, 2
= 3.3V, V
CC3
= V
CC1
1V)
q
6
11
V
V
GATEn
V
CCn
(for V
CC1, 2
= 5V, V
CC3
= V
CC1
1V)
q
9
16
V
V
GATEn
V
CCn
(for V
CC1, 2
= 12V or 15V,
q
7
18
V
V
CC3
= V
CC1
1V)
V
GATEn, 0V
GATEn Overvoltage Lockout
0.25
V
Threshold
V
FBn
FBn Low Threshold Voltage
FBn High to Low Transition
q 1.209
1.234
1.259
V
V
FBn
FBn Line Regulation
2.7V d V
CC1
d 16.5V
0.5
mV
V
FBn, HST
FBn Hysteresis
3
mV
V
ONHI
ON High Threshold Voltage
ON Low to High Transition
q 1.250
1.314
1.380
V
V
ONLO
ON Low Threshold Voltage
ON High to Low Transition
q 1.172
1.234
1.270
V
V
ONHST
ON Hysteresis
80
mV
I
FILTER
FILTER Pull-Up Current
During Slow Fault Condition
q 2.5
2
1.3
礎
FILTER Pull-Down Current
During Normal and Reset Conditions
q
7
10
13
礎
V
FILTER
FILTER Threshold
Latched Off Threshold, FILTER Low to High
q 1.10
1.26
1.42
V
V
FILTERHST
FILTER Threshold Hysteresis
70
mV
I
TMR
TIMER Pull-Up Current
TIMER On
q
23
20
17
礎
TIMER Pull-Down Current
TIMER Off, V
FAULT
= Low
q
0.9
1.6
2.3
礎
V
TIMER
= 1.5V
2.5
mA
V
TMR
TIMER Threshold
TIMER Low to High
q 1.172
1.234
1.27
V
TIMER High to Low
q
0.3
0.5
V
V
FAULT
FAULT Low Threshold Voltage
FAULT High to Low
q 1.172
1.234
1.27
V
V
FAULT, HST
FAULT Hysteresis
FAULT Low to High
50
mV
I
FAULT, UP
FAULT Pull-Up Current
q 2.5
2
1.5
礎
V
OLFAULT
Output Low Voltage
I
FAULT
= 1.6mA, V
CC1
= 5V
q
0.19
0.4
V
V
OLRESETn
Output Low Voltage
I
RESETn
= 1.6mA, V
CC1
= 5V
q
0.19
0.4
V
t
GATEFC
Fast COMPn Trip to
V
CB
= 0mV to 200mV Step
q
0.5
1
祍
GATEn Discharging
t
FAULTSC
Slow Comparator Trip to
V
CB
= 0mV to 100mV Step, FILTER Floating
10
祍
FILTER High and FAULT Latched
10nF at FILTER Pin to GND
q
7
12
ms
t
OVPFTR
FILTER Comparator Trip to
V
FILTER
= 0V to 5V
q
8
12
祍
GATEn Discharging
t
EXTFAULT
FAULT Low to GATE Discharging
V
FAULT
= 5V to 0V
q
1.5
3
4.5
祍
t
RESET
Circuit Breaker Reset Time
ON Held Low to Guarantee FAULT High
q
15
30
祍
t
OFF
Turn-Off Time
ON Goes Low to GATEn Off
8
祍
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All current into device pins is positive; all current out of device
pins is negative; all voltages are referenced to ground unless otherwise
specified.
Note 3: An internal zener at the GATEn pin clamps the charge pump
voltage to a typical maximum operating voltage of 26V. External overdrive
of the GATEn pin beyond the internal zener voltage may damage the part.
The GATEn capacitance must be <0.15礔 at maximum V
CC
. If a lower
GATEn pin voltage is desired, use an external zener diode.
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