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| 型号： | MIC2544-1BM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 4/14页 |
| 文件大小： | 0K |
| 描述： | IC SW CURR LIMIT HI SIDE 8-SOP |
| 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-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2544-1BMTR MIC2544-1BMTR-ND |
Micrel, Inc.
Absolute Maximum Ratings (1)
Supply Voltage (V IN ) ....................................................+7.0V
Output Voltage (V OUT ) .................................................+7.0V
Output Current (I OUT ) .................................Internally Limited
Enable Input (V EN ) .................................. –0.3V to VIN+0.3V
Fault Flag Voltage (V FLG ).............................................+7.0V
Fault Flag Current (I FLG ) ..............................................50mA
Storage Temperature (T s ) ......................... –65°C to +150 ° C
Junction Temperature (T J ) ........................Internally Limited
Lead Temperature (soldering, 5 sec.)........................ 260°C
ESD Rating (3) .................................................................. 2kV
MIC2544/2548
Operating Ratings (2)
Supply Voltage (V IN )..................................... +2.7V to +5.5V
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.
Switch off, OUT = open
Switch on, OUT = open
Enable low
Symbol
V EN
Parameter
Supply Current
Enable Input Voltage
Condition
Enable high (4)
(1)
(4)
(4)
Min
#
2.4
Typ
0.75
75
1.7
1.5
Max
5
160
0.8
Units
μ A
μ A
V
V
Enable Input Capacitance
Note 5
1
pF
R DS(on)
Switch Resistance
I OUT = 500mA
80
120
m Ω
I OUT = 500mA to 1.5A, V OUT =1V to 4V
Current Limit Factor
Output Leakage Current
I OUT = 100mA to 1A, V OUT =1V to 4V (6)
Switch off
(6)
184
161
230
230
1
276
299
10
V
V
μ A
t ON
T R
T OFF
T F
Output Turn-On Delay
Output Turn-On Rise Time
Output Turn-Off Delay
Output Turn-Off Fall Time
R L = 10 Ω , C L = 1 μ F, Figures 1a, 1b
R L = 10 Ω , C L = 1 μ F, Figures 1a, 1b
R L = 10 Ω , C L = 1 μ F, Figures 1a, 1b
R L = 10 Ω , C L = 1 μ F, Figures 1a, 1b
1
1
2
2
22
21
5
5
ms
ms
μ s
μ s
Overtemperature Threshold Shutdown
T J increasing
T J decreasing
140
130
° C
° C
MIC2548
Error Flag Output Resistance
Error Flag Off Current
EN Pulse Reset Width
V IN to EN Set-Up
Current-Limit Response Time
Overcurrent Flag Response Time
V IN = 5V, I L = 10 μ A
V IN = 3.3V, I L = 10 μ A
V FLG = 5V
MIC2548 thermal shutdown latch
(6)
V OUT = 0V (6)
V OUT = V IN /2 to FLG low
5
0
4
5
0.01
25
5
15
20
1
Ω
Ω
μ A
μ s
μ s
μ s
μ s
6. Current limit threshold is determined by I LIMIT = , where R SET is in ohms.
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Off is ≤ 0.8V and on is ≥ 2.4V for the MIC2544-1 and MIC2548-1. Off is ≥ 2.4V and on is ≤ 0.8V for the MIC2544-2 and MIC2548-2. The enable input
has about 200mV of hysteresis.
5. Guaranteed by design but not production tested.
230V
R SET
April 2010
4
M9999-043010
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