参数资料
型号: MIC2544A-1YMM TR
厂商: Micrel Inc
文件页数: 4/19页
文件大小: 0K
描述: IC SW CURR LIMIT HI SIDE 8MSOP
标准包装: 2,500
类型: 高端
输入类型: 非反相
输出数: 1
导通状态电阻: 80 毫欧
电流 - 峰值输出: 1.5A
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 带卷 (TR)
Micrel, Inc.
Absolute Maximum Ratings (1)
Supply Voltage (V IN ) ....................................... –0.3V to 6.0V
Output Voltage (V OUT ) ....................................... –0.3V to V IN
Output Current (I OUT ) .................................Internally Limited
Enable Input (V EN ) ................................... –0.3V to V IN +0.3V
Fault Flag Voltage (V FLG )................................... –0.3V to 6V
Fault Flag Current (I FLG ) ..............................................50mA
Storage Temperature (T s ) ......................... –65°C to +150 ° C
Junction Temperature (T J ) ........................Internally Limited
Lead Temperature (soldering, 10 sec.)...................... 260°C
ESD Rating (3) .................................................................. 2kV
MIC2544A/2548A
Operating Ratings (2)
Supply Voltage (V IN )..................................... +2.7V to +5.5V
Enable Voltage (V EN ).............................................. 0V to V IN
Current Limit Set Range................................... 0.1A to 1.5A
Ambient Temperature (T A ) .......................... –40°C to +85°C
Package Thermal Resistance
SOIC ( θ JA ) ........................................................160°C/W
MSOP ( θ JA ) ......................................................206°C/W
Electrical Characteristics
V IN = +5V; T A = 25°C, Bold values indicate –40°C to +85°C, unless noted.
Parameter
Condition
Min
Typ
Max
Units
Power Input Supply
Input Voltage Range (V IN )
2.7
5.5
V
Switch off, V OUT = Open
Switch on, V OUT = Open
Shutdown Current
Supply Current
(4)
(4)
0.75
90
5
160
μA
μA
Enable Input
EN Logic Level High
2.4
1.7
V
EN Logic Level Low
1.5
0.8
V
V EN = 2.4V
V EN = 0.8V
MIC2548 Thermal Shutdown Latch
MIC2548
En Bias Current
EN Input Capacitance
EN Pulse Reset Width
V IN to EN Set-Up
(Note 5)
(4)
(4)
(5)
(5)
5
0
0.1
0.1
1
1.0
1.0
μA
μA
pF
μs
μs
Internal Switch
On Resistance R DS(ON)
Output Leakage Current
I OUT = 500mA
Switch off
80
1
120
10
m ?
μA
Current Limit
I OUT = 500mA to 1.5A, V OUT = 1V to 4V
Current Limit Factor
Current-Limit Response
Time
I OUT = 100mA to 500mA, V OUT = 1V to 4V (6)
(6)
V OUT = 0V (5) (6)
161
184
230
230
25
299
276
V
V
μs
Output Response Times
Output Turn-On Delay
Output Turn-On Rise Time
Output Turn-Off Delay
Output Turn-Off Fall Time
R L = 10 ? , C L = 1μF, Figures 1a, 1b
R L = 10 ? , C L = 1μF, Figures 1a, 1b
R L = 10 ? , C L = 1μF, Figures 1a, 1b
R L = 10 ? , C L = 1μF, Figures 1a, 1b
1
1
2
2
30
30
5
5
ms
ms
μs
μs
April 2010
4
M9999-043010
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