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參數(shù)資料
| 型號： | MIC5212-SJBM |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual 500mA LDO Regulator |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 171K |
| 代理商： | MIC5212-SJBM |
April 2003
3
MIC5212
MIC5212
Absolute Maximum Ratings
(Note 1)
Supply Input Voltage (V
IN
A or B) .................
–
20V to +20V
Power Dissipation (P
D
) ............................ Internally Limited
Storage Temperature Range ...................
–
60
°
C to +150
°
C
Lead Temperature (soldering, 5 sec.) ....................... 260
°
C
Micrel
Electrical Characteristics
Regulator A and B
V
IN
= V
OUT
+ 1V; I
L
= 100
μ
A; C
L
= 4.7
μ
F; T
J
= 25
°
C,
bold
values indicate
–
40
°
C
≤
T
J
≤
+125
°
C; unless noted.
Symbol
Parameter
Conditions
Min
Typical
Max
Units
V
O
Output Voltage Accuracy
variation from specified V
OUT
–
1
–
2
1
2
%
%
V
O
/
T
Output Voltage
Temperature Coefficient
Note 4
40
ppm/
°
C
V
O
/V
O
Line Regulation
V
IN
= V
OUT
+ 1V to 16V
0.009
0.05
0.1
% / V
% / V
V
O
/V
O
Load Regulation
I
L
= 0.1mA to 500mA,
Note 5
0.05
0.7
1.0
%
%
V
IN
–
V
O
Dropout Voltage,
Note 6
(per regulator)
I
L
= 150mA
175
275
350
500
600
mV
mV
mV
mV
I
L
= 500mA
350
I
GND
Ground Pin Current,
Note 7
(per regulator)
I
L
= 150mA
1.5
2.5
3.0
20
25
mA
mA
mA
mA
I
L
= 500mA
12
PSRR
Ripple Rejection
f = 120Hz, I
L
= 150mA
V
OUT
= 0V
V
OUT
= 2.5V, I
OUT
= 50mA, C
OUT
= 2.2
μ
F
75
dB5
I
LIMIT
Current Limit
750
1000
mA
Spectral Noise Density
500
nV/
√
Hz
Note 1.
Note 2.
Note 3.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
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
, the junction-to-ambient thermal resistance,
θ
JA
, and the ambient temperature, T
. The maximum allowable power
dissipation at any ambient temperature is calculated using: P
= (T
–
T
)
÷
θ
. Exceeding the maximum allowable power dissipa-
tion will result in excessive die temperature, and the regulator will go into thermal shutdown. The
θ
JA
of the 8-lead SOIC (M) is 63
°
C/W
mounted on a PC board (see
“
Thermal Considerations
”
section for further details).
Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load
range from 0.1mA to 500mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification.
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential.
Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Note 4.
Note 5.
Note 6.
Note 7.
Operating Ratings
(Note 2)
Supply Input Voltage (V
IN
) ............................... 2.5V to 16V
Junction Temperature (T
J
) .......................
–
40
°
C to +125
°
C
Thermal Resistance
(θ
JA
).........................................
Note 3
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