参数资料
| 型号： | MIC49500WU |
| 厂商： | Micrel Inc |
| 文件页数： | 4/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 5A TO-263-7 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.7 V ~ 6 V |
| 输入电压： | 1.4 V ~ 6 V |
| 电压 - 压降（标准）： | 0.29V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A |
| 电流 - 限制（最小）： | 5.5A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-8，D²Pak（7 引线+接片），TO-263CA |
| 供应商设备封装： | TO-263-7 |
| 包装： | 管件 |
| 其它名称： | 576-2350 MIC49500WU-ND |
Micrel, Inc.
Absolute Maximum Ratings (1)
Supply Voltage (V IN ) ............................................. 6.5V
Bias Supply Voltage (V BIAS ) .................................. 6.5V
Enable Input Voltage (V EN )................................... 6.5V
Power Dissipation............................. Internally Limited
Junction Temperature ................. -40°C ≤ T J ≤ +125°C
Storage Temperature (TS) ........... -65°C ≤ TJ ≤ 150°C
Lead Temperature (soldering, 5 sec.) ................260°C
ESD Rating (3) .........................................................3kV
MIC49500
Operating Ratings (2)
Supply voltage (V IN ).......................................1.4V to 6V
Bias Supply Voltage (V BIAS )..............................3V to 6V
Enable Input Voltage (V EN )........................... 0V to V BIAS
Junction Temperature Range........-40°C ≤ T J ≤ +125°C
Package Thermal Resistance
S-Pak ( θ JC ) ................................................. 2°C/W
TO-263 ( θ JC ) ............................................... 2°C/W
Electrical Characteristics (4)
V IN = V OUT + 1.0V; V BIAS = V OUT + 2.1V; C OUT = 10μF; I OUT = 10mA; T J = 25°C, bold values indicate –40°C to +125°C,
unless noted.
Parameter
Output Voltage Accuracy
Conditions
At 25°C, fixed voltage options
Over temperature range
Min
–1
–2
Typ
Max
+1
+2
Units
%
%
Output Voltage Line
Regulation
Output Voltage Load
Regulation
V IN – V O ; Dropout Voltage
V BIAS – V O ; Dropout Voltage
Ground Pin Current
Ground Pin Current in
Shutdown
Current thru V BIAS
V IN = V OUT + 1V to 6V
I L = 10mA to 5A
I L = 2.5A
I L = 5.0A
I L = 2.5A
I L = 5.0A
V OUT = 1.2V; I L = 0mA
V OUT = 1.2V; I L = 5.0A
0.7V ≤ V OUT ≤ 1.8V
1.8V < V OUT ≤ 3.3V
V IL < 0.6V
I L = 0mA
I L = 5.0A
-0.1
0.2
145
290
1.5
1.7
55
55
55
75
0.1
30
70
+0.1
1.0
300
500
2.0
2.1
90
90
130
5
50
150
%/V
%
mV
mV
V
V
mA
mA
mA
mA
μA
mA
mA
Current Limit
Feedback Current
V OUT = 0V
5.5
7.5
50
9.5
1000
A
nA
Enable Input
Enable Input Threshold
Regulator enable
Regulator shutdown
1.6
1.2
1.15
0.6
V
V
Enable Hysteresis
Enable Pin Input Current
Turn-on Time
C OUT = 10μF; Note 5
20
50
0.1
10
150
5
45
mV
μA
μs
Reference Voltage (Adjustable Output Only)
V REF
T A = 25°C
–40°C < T A < 125°C
0.693
0.686
0.7
0.707
0.714
V
V
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. Specification for packaged product only.
5. Turn-on time is measured from 10% of the positive edge of the enable signal to 90% of the rising edge of the output voltage of the regulator.
July 2007
4
M9999-071307
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