参数资料
型号: ISL61851FCBZ-T
厂商: Intersil
文件页数: 10/20页
文件大小: 0K
描述: IC USB PWR CTRLR DUAL 8SOIC
标准包装: 2,500
类型: 热交换开关
应用: USB 过电流保护控制器
内部开关:
电流限制: 600mA
电源电压: 2.3 V ~ 5.5 V
工作温度: 0°C ~ 70°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: 带卷 (TR)
ISL6185
Turn-off Time Delay
During operation, once an OC condition is detected, the output
is current limited for ~12ms to allow transient OC conditions to
pass. If still in current limit and after the current limit period
has elapsed, the output is turned off, and the fault is reported
by pulling the corresponding FAULT low. The internal 12ms timer
starts upon current limiting and is independent of ambient or IC
thermal conditions, thus providing more consistent operation
over the entire temperature range.
Latch-off Restart/Auto-Restart Start
After turn-off, with the latch-off options, both the output and the
FAULT signal are latched low until they are reset by the enable
signal being de-asserted. At this time, the FAULT signal clears,
and the IC is ready for enable to assert. On the auto restart
options, the ISL6185 attempts to periodically turn-on the
output at approximately 1s intervals, as long as the enable is
asserted. If the OC condition remains indefinitely, the fault
indication and the restart attempts also continue until the
thermal protection feature is invoked, thus increasing the
restart period.
Active Output Pull-down
Another ISL6185 feature is the 10k Ω active pull-down on the
outputs to <60mV above GND when the device is disabled, thus
ensuring discharge of the load.
Typical Performance Curves
150
140
1.3
130
120
110
100
90
80
70
60
V IN = 2.5V
V IN = 3.3V
V IN = 5V
1.2
1.1
1.0
0.9
0.8
50
-40
-25
0
25 45 75
85
115
0.7
-40
-25
0 25 45 75
85
115
TEMPERATURE (°C)
FIGURE 3. SWITCH ON-RESISTANCE AT 0.5A
1.2
TEMPERATURE (°C)
FIGURE 4. NORMALIZED SWITCH RESISTANCE
1.6
1.1
1.0
0.9
0.8
5V I TRIP
3.3V I TRIP
1.5
1.4
1.3
1.2
1.1
5V I TRIP
3.3V I TRIP
5V I LIM
5V I SC
0.7
0.6
0.5
0.4
5V I SC
5V I LIM
3.3V I LIM
-40 -25
0 25 45 75
3.3V I SC
85
115
1.0 3.3V I LIM
0.9
0.8
0.7
0.6
-40 -25
0 25 45 75
3.3V I SC
85
115
TEMPERATURE (°C)
FIGURE 5. 0.6A CONTINUOUS CURRENT CHARACTERISTICS
10
TEMPERATURE (°C)
FIGURE 6. 1.1A CONTINUOUS CURRENT CHARACTERISTICS
FN6937.3
March 8, 2012
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