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參數(shù)資料
| 型號(hào)： | MIC2295 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | High Power Density 1.2A Boost Regulator |
| 中文描述： | 高功率密度1.2A的升壓穩(wěn)壓器 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 1267K |
| 代理商： | MIC2295 |
Micrel
MIC2295
July 2004
M9999-052402
(408) 955-1690
3
Absolute Maximum Rating
(1)
Supply voltage (V
IN
) ……………………..…
Switch voltage (V
SW
) ……………………
Enable pin voltage (V
EN
) …………..……..….
FB Voltage
(V
FB
)……...………………………..…………6V
Switch Current (I
SW
) ………………………..…..…..
Ambient Storage Temperature (T
S
) …. -65
°
C to +150
°
C
ESD Rating
(3)
...………………………… ……..2KV
12V
-0.3V to 34V
-0.3 to V
IN
2.5A
Operating Range
(2)
Supply Voltage (V
IN
) …………………..……
Junction Temperature Range (T
J
) …… -40
°
C to +125
°
C
Package Thermal Impedance
JA
2x2 MLF-8L lead ……………………
JA
ThinSOT23-5 lead …………………… 256
°
C/W
2.5V to 10V
93
°
C/W
Electrical Characteristics
T
A
=25
o
C, V
IN
=V
EN
= 3.6V, V
OUT
= 15V, I
OUT
= 40mA, unless otherwise noted.
Bold
values
indicate -40
°
C T
J
125
°
C.
Symbol
V
IN
V
UVLO
I
VIN
I
SD
V
FB
Parameter
Supply Voltage Range
Under-Voltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
Condition
Min
2.5
1.8
Typ
Max
10
2.4
5
1
Units
V
V
mA
mA
2.1
2.8
0.1
V
FB
= 2V (not switching)
V
EN
= 0V
(4)
(+/-1%)
1.227
1.24
1.252
(+/-2%) (Over Temp)
1.215
1.265
V
I
FB
Feedback Input Current
V
FB
= 1.24V
-450
nA
Line Regulation
3V V
IN
5V
0.04
1
%
Load Regulation
5mA I
OUT
40mA
1.5
%
D
MAX
Maximum Duty Cycle
85
90
%
I
SW
V
SW
I
SW
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Note 5
I
SW
= 1.2A
V
EN
= 0V, V
SW
= 10V
TURN ON
TURN OFF
V
EN
= 10V
1.2
1.7
600
0.01
A
mV
mA
5
V
EN
Enable Threshold
1.5
0.4
40
1.35
34
V
I
EN
f
SW
V
OVP
Tj
Enable Pin Current
Oscillator Frequency
Output over-voltage protection
Over-Temperature Threshold
Shutdown
20
1.2
32
150
10
mA
MHz
V
°
C
°
C
1.05
30
MIC2295BML only
Hysteresis
Notes:
1.
Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply
when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum
junction temperature, T
J(Max)
, the junction-to-ambient thermal resistance,
JA
, and the ambient temperature, T
A
. The maximum
allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
This device is not guaranteed to operate beyond its specified operating rating.
IC devices are inherently ESD sensitive. Handling precautions required. Human body model rating: 1.5K in series with 100pF.
I
SD
= I
VIN
.
Guaranteed by design.
2.
3.
4.
5.
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