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| 型号： | MIC39501-2.5BU TR |
| 厂商： | Micrel Inc |
| 文件页数： | 3/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.5V 5A TO-263-5 |
| 标准包装： | 750 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.5V |
| 输入电压： | 最高 16V |
| 电压 - 压降（标准）： | 0.4V @ 5A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 5A（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-263-6，D²Pak（5 引线+接片），TO-263BA |
| 供应商设备封装： | TO-263-5 |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC39501-2.5BUTR MIC39501-2.5BUTR-ND |
MIC39500/39501
Absolute Maximum Ratings (Note 1)
Supply Voltage (V IN ) .......................................–20V to +20V
Enable Voltage (V EN ) .................................................. +20V
Storage Temperature (T S ) ........................ –65°C to +150°C
Lead Temperature (soldering, 5 sec.) ........................ 260°C
ESD, Note 3
Electrical Characteristics
T J = 25°C, bold values indicate –40°C ≤ T J ≤ +125°C; unless noted
Micrel
Operating Ratings (Note 2)
Supply Voltage (V IN ) ................................... +2.25V to +16V
Enable Voltage (V EN ) .................................................. +16V
Maximum Power Dissipation (P D(max) ) ..................... Note 4
Junction Temperature (T J ) ........................ –40°C to +125°C
Package Thermal Resistance
TO-263 (θ JC ) ......................................................... 2°C/W
TO-220 ( θ JC ) ......................................................... 2°C/W
Symbol
V OUT
Parameter
Output Voltage
Line Regulation
Load Regulation
Condition
10mA
10mA ≤ I OUT ≤ 5A, V OUT + 1V ≤ V IN ≤ 16V
I OUT = 10mA, V OUT + 1V ≤ V IN ≤ 16V
V IN = V OUT + 1V, 10mA ≤ I OUT ≤ 5A
Min
–1 1
–2
Typ
0.06
0.2
Max
1
2
0.5
1
Units
%
%
%
%
?V OUT /?T
ppm/°C
Output Voltage Temp. Coef? cient,
20
100
Note 5
V DO
I GND
Dropout Voltage, Note 6
Ground Current, Note 7
I OUT = 250mA, ?V OUT = –2%
I OUT = 2.5A, ?V OUT = –2%
I OUT = 5A, ?V OUT = –2%
I OU T = 2.5A, V IN = V OUT + 1V
125
320
400
15
250
575
50
mV
mV
mV
mA
I OUT = 5A, V IN = V OUT + 1V
70
mA
I GND(do)
I OUT(lim)
e n
μV(rms)
Dropout Ground Pin Current
Current Limit
Output Noise Voltage
V IN ≤ V OUT(nominal) – 0.5V, I OUT = 10mA
V OUT = 0V, V IN = V OUT + 1V
C OUT = 47μF, I OUT = 100mA, 10Hz to 100kHz
2.1
7.5
260
mA
A
Enable Input (MIC39501)
V EN
Enable Input Voltage
logic low (off)
logic high (on)
2.25
0.8
V
V
I IN
Enable Input Current
V EN = V IN
30
35
75
μA
μA
V EN = 0.8V
2
4
μA
μA
I OUT(shdn)
Shutdown Output Current
Note 8
10
20
μA
Flag Output (MIC39501)
I FLG(leak)
V FLG(do)
V FLG
Output Leakage Current
Output Low Voltage
Low Threshold
High Threshold
V OH = 16V
V IN = 2.250V, I OL , = 250μA, Note 9
1% of V OUT
1% of V OUT
93
0.01
180
1
2
300
400
99.2
μA
μA
mV
mV
%
%
Hysteresis
1
%
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Note 6.
Note 7.
Note 8.
Note 9.
Exceeding the absolute maximum ratings may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
P D(max) = (T J(max) – T A ) ÷ θ JA , where θ JA depends upon the printed circuit layout. See “Applications Information.”
Output voltage temperature coef? cient is ?V OUT(worst case) ÷ (T J(max) – T J(min) ) where T J(max) is +125°C and T J(min) is –40°C.
V DO = V IN – V OUT when V OUT decreases to 98% of its nominal output voltage with V IN = V OUT + 1V. For voltages below 2.25V, Dropout volt-
age is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage is 2.25V.
I GND is the quiescent current. I IN = I GND + I OUT .
V EN ≤ 0.8V, V IN ≤ 8V, and V OUT = 0V
For a 2.5V device, V IN = 2.250V (device is in dropout).
August 2005
3
M9999-082605-B
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