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參數(shù)資料
| 型號： | MIIC5271 |
| 廠商： | Micrel Semiconductor,Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 117K |
| 代理商： | MIIC5271 |
October 2003
3
MIC5271
MIC5271
Absolute Maximum Ratings
(Note 1)
Input Voltage (V
–IN
)...................................... –20V to +0.3V
Enable Voltage (V
EN
) .................................... –20V to +20V
Power Dissipation (P
D
) ............................Internally Limited
Junction Temperature (T
J
) ....................... –40
°
C to +125
°
C
Lead Temperature (soldering, 5 sec.) ....................... 260
°
C
Storage Temperature (T
S
) ....................... –65
°
C to +150
°
C
ESD Rating,
Note 3
Micrel
Operating Ratings
(Note 2)
Input Voltage (V
IN
) ....................................... –16V to –3.3V
Enable Voltage (V
EN
) .................................... –16V to +16V
Junction Temperature (T
J
) ....................... –40
°
C to +125
°
C
Thermal Resistance (
θ
JA
)
Note 4 .........................
235
°
C/W
Electrical Characteristics
(Note 5)
V
IN
= V
OUT
– 1.0V; C
OUT
= 4.7
μ
F, I
OUT
= 100
μ
A; T
J
= 25
°
C,
bold
values indicate –40
°
C
≤
T
J
≤
+125
°
C; unless noted.
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
OUT
Output Voltage Accuracy
Variation from nominal V
OUT
–2
–3
2
3
%
%
V
OUT
/
T
Output Voltage Temperature
Coefficient
Note 6
100
ppm/
°
C
V
OUT
/V
OUT
Line Regulation
V
IN
= V
OUT
– 1V to –16V
0.04
0.15
0.2
%/V
V
OUT
/V
OUT
Load Regulation
I
OUT
= 100
μ
A to 100mA,
Note 7
0.4
1.8
2.0
%
%
V
IN
– V
OUT
Dropout Voltage,
Note 8
I
OUT
= 100
μ
A
I
OUT
= 50mA
I
OUT
= 100mA
55
mV
360
500
mV
500
700
900
mV
I
GND
Ground Current,
Note 9
I
OUT
= 100
μ
A
I
OUT
= 50mA
I
OUT
= 100mA
V
EN
=
±
0.6V
f = 120Hz
25
100
μ
A
0.9
mA
2.0
3.0
mA
I
GND_SD
PSRR
Ground current in shutdown
–1.0
0.1
+1.0
μ
A
Ripple Rejection
50
dB
I
LIMIT
Enable Input
Current Limit
V
OUT
= 0V
235
350
mA
T
ON
V
EN
Turn-on Time
Time to V
OUT
= 90% nom.
Regulator OFF
60
μ
s
Input Low voltage
±
0.6
V
Input High Voltage
Regulator ON
±
2.0
V
I
EN
Enable Input Current
V
EN
=
±
0.6V and –2.0V
V
EN
= +2.0V
0.1
10.0
μ
A
5.6
Note 1.
Note 2.
Note 3.
Note 4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended.
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
, where
θ
is 235
°
C/W. Exceeding the maximum allowable power dissipation will result in excessive die
temperature, and the regulator will go into thermal shutdown. See the “Thermal Considerations”section for details.
Specification for packaged product only.
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 100
μ
A to 100mA. 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 5.
Note 6.
Note 7.
Note 8.
Note 9.
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