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參數(shù)資料
| 型號： | LCHM |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 20mA, 3V to 80V Low Dropout Micropower Linear Regulator |
| 中文描述： | 20mA的，3V至80V的微功率低壓差線性穩(wěn)壓器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 176K |
| 代理商： | LCHM |
3
LT3014B
3014bf
PARAMETER
Output Voltage Noise
ADJ Pin Bias Current
Ripple Rejection
Current Limit
CONDITIONS
C
OUT
= 0.47
μ
F, I
LOAD
= 20mA, BW = 10Hz to 100kHz
(Note 7)
V
IN
= 7V(Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz, I
LOAD
= 20mA
V
IN
= 7V, V
OUT
= 0V
V
IN
= 3.3V,
V
OUT
= –0.1V (Note 2)
V
IN
= –80V, V
OUT
= 0V
MIN
TYP
115
4
70
70
MAX
UNITS
μ
V
RMS
10
nA
dB
mA
mA
mA
60
●
25
Input Reverse
Leakage Current
Reverse Output Current
(Note 8)
●
6
V
OUT
= 1.22V, V
IN
< 1.22V (Note 2)
2
4
μ
A
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
J
= 25
°
C.
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LT3014B is tested and specified for these conditions with the
ADJ pin connected to the OUT pin.
Note 3:
Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply for
all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage
range must be limited.
Note 4:
To satisfy requirements for minimum input voltage, the LT3014B
is tested and specified for these conditions with an external resistor divider
(249k bottom, 392k top) for an output voltage of 3.3V. The external
resistor divider adds a 5
μ
A DC load on the output.
Note 5:
Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage is equal to (V
IN
– V
DROPOUT
).
Note 6:
GND pin current is tested with V
IN
= V
OUT
(nominal) and a current
source load. This means the device is tested while operating in its dropout
region. This is the worst-case GND pin current. The GND pin current
decreases slightly at higher input voltages.
Note 7:
ADJ pin bias current flows into the ADJ pin.
Note 8:
Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the rated output voltage. This current flows into the OUT
pin and out of the GND pin.
Note 9:
The LT3014BE is guaranteed to meet performance specifications
from 0
°
C to 125
°
C operating junction temperature. Specifications over
the –40
°
C to 125
°
C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
Note 10:
This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125
°
C when overtemperature protection is
active. Continuous operation above the specified maximum operating
junction temperature may impair device reliability.
TYPICAL PERFOR U
OUTPUT CURRENT (mA)
D
3014 G01
0
16
4
2
6
10
14
18
8
12
20
500
450
400
300
350
250
200
150
100
50
0
T
J
= 125
°
C
T
J
= 25
°
C
Typical Dropout Voltage
OUTPUT CURRENT (mA)
0
D
200
400
600
100
300
500
4
8
12
16
3014 G02
20
2
0
6
10
14
18
= TEST POINTS
T
J
≤
125
°
C
T
J
≤
25
°
C
TEMPERATURE (
°
C)
–50
0
D
50
150
200
250
500
350
0
50
75
3014 G03
100
400
450
300
–25
25
100
125
I
L
= 20mA
I
L
= 10mA
I
L
= 1mA
I
L
= 100
μ
A
Guaranteed Dropout Voltage
Dropout Voltage
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