LTC1515 查看數據表（PDF） - Linear Technology
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LTC1515 Datasheet PDF : 8 Pages
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LTC1515 Series
ELECTRICAL CHARACTERISTICS
VIN = 2V to 10V, SHDN = 3V, C1 = 0.22µF, CIN = COUT = 10µF unless otherwise noted (Note 2).
PARAMETER
POR Leakage Current
POR Trip Point (With Respect to VOUT)
POR Trip Point Hysteresis
IOUT Short-Circuit Current
tON
POR Delay
CONDITIONS
VPOR = 5V
VOUT Ramping Negative
VOUT = 0V
Soft Start Turn-On Time
After VOUT Above POR Threshold
MIN
q
–1
q – 10
q
q 140
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: For VIN ≥ 8V, COUT = 22µF.
TYP MAX
1
– 7.5
–5
1
12
40
4
200
280
UNITS
µA
%
%
mA
ms
ms
TYPICAL PERFORMANCE CHARACTERISTICS
LTC1515-X
3.3V Efficiency vs Output Current
100
VOUT = 3.3V
TA = 25°C
80
VIN = 2V
VIN = 4.4V
60
VIN = 2.7V
VIN = 6V
40
LTC1515-X
5V Efficiency vs Output Current
100
VIN = 2.7V
VIN = 6V
80
VIN = 3.3V
60
VIN = 8V
40
20
0
0.01
0.1
1
10
OUTPUT CURRENT (mA)
100
1515 G01
LTC1515-X 5V Output Voltage
Ripple vs Input Voltage
250
VOUT = 5V
IOUT = 10mA
200 TA = 25°C
COUT = 10µF
150
COUT = 22µF
100
COUT = 47µF
50
20
VOUT = 5V
TA = 25°C
0
0.01
0.1
1
10
OUTPUT CURRENT (mA)
100
1515 G02
LTC1515-X 3.3V Output Voltage
vs Input Voltage
3.45
VOUT = 3.3V
IOUT = 10mA
3.40 COUT = 10µF
TA = 25°C
3.35
3.30
3.25
0
0
2
4
6
8
10
INPUT VOLTAGE (V)
1515 G04
3.20
0
2
4
6
8
10
INPUT VOLTAGE (V)
1515 G05
LTC1515-X 3.3V Output Voltage
Ripple vs Input Voltage
250
VOUT = 3.3V
IOUT = 10mA
200 TA = 25°C
150
COUT = 10µF
100
COUT = 22µF
50
COUT = 47µF
0
0
2
4
6
8
10
INPUT VOLTAGE (V)
1515 G03
LTC1515-X Operating Current
vs Input Voltage
120
VOUT = 5V
IOUT = 0mA
100
80
25°C
85°C
60
–40°C
40
20
0
2
4
6
8
10
INPUT VOLTAGE (V)
1515 G06
3
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