参数资料
| 型号： | MAX5944ESE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC FW CURR LIMITER DUAL 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | FireWire? 应用程序 |
| FET 型： | N 沟道 |
| 输出数： | 2 |
| 内部开关： | 无 |
| 延迟时间 - 关闭： | 100ns |
| 电源电压： | 7.5 V ~ 37 V |
| 电流 - 电源： | 1.3mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
Dual FireWire Current Limiter and Low-Drop
ORing Switch Controller
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 7.5V to 37V, GND = 0V, and T A = -40°C to +85°C, unless otherwise noted. Typical values are at V IN_ = 12V, T A = +25°C.)
(Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TIMING
Current-Limit Timeout
Automatic Restart Delay After
Current-Limit Timeout (Note 7)
GATE1_ Turn-Off Time
(ORing Response Time)
Turn-Off Response Time
(Note 7)
Minimum Delay from ON_ Low to
Low-Current Shutdown Mode
t ILIM
t OFF
t OR
t ON_OFF
t SD
Current-limit mode
From V OR trigger until
(V GATE1_ - V IN_ ) < 1V, C GATE1_ = 10nF
Time from V ON_ < (V ON_OFF - Hysteresis)
until (V GATE2_ - V OUT_ ) < 1V,
for C GATE2_ = open
ON_ step from 1.3V to 0.4V
1.78
240
2.02
259
100
0.34
50
2.26
278
0.6
ms
ms
ns
μs
μs
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
All min/max parameters are tested at +25°C and +85°C. Limits at -40°C are guaranteed by design.
Measured at both V GATE2 = V OUT = 0V and V GATE2 = V OUT = V IN .
The typical value of parameter V THF is 1.5 x V TH .
Current-Limit Timeout. IN_ or ON_ low.
See the Typical Operating Circuit . Measured at V GATE_ = V SENSE_ .
The tristate (“floating”) logic condition will be entered if the pin current is within these limits.
If the ON_ voltages go below V ON_REF - Hysteresis, then GATE2_ goes low immediately to disconnect power from the load
quickly (within t ON_OFF ).
Typical Operating Characteristics
(V IN_ = +12V, T A = +25°C, unless otherwise noted.)
2.0
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
6.0
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
52.0
CURRENT-LIMIT/CIRCUIT-BREAKER
THRESHOLD VOLTAGE vs. TEMPERATURE
1.9
1.8
1.7
5.5
5.0
4.5
4.0
51.5
51.0
50.5
50.0
V IN = 32V
1.6
T A = +85 ° C
3.5
49.5
1.5
1.4
T A = +25 ° C
3.0
2.5
49.0
48.5
V IN = 12V
V IN = 7.5V
1.3
1.2
2.0
1.5
1.0
48.0
47.5
47.0
1.1
1.0
T A = -40 ° C
0.5
0
46.5
46.0
5
10
15
20
25
30
35
40
5
10
15
20
25
30
35
40
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE ( ° C)
4
_______________________________________________________________________________________
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