LTC1515 查看數據表（PDF） - Linear Technology
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LTC1515 Datasheet PDF : 8 Pages
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LTC1515 Series
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN to GND ................................................ – 0.3V to 12V
VOUT to GND ............................................. – 0.3V to 12V
SHDN, 5/3, FB to GND .............................. – 0.3V to 12V
VOUT Short-Circuit Duration ............................. Indefinite
Operating Temperature Range
Commercial ............................................. 0°C to 70°C
Industrial ............................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SHDN 1
POR 2
FB 3
GND 4
8 VOUT
7 VIN
6 C1+
5 C1–
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 110°C/W
ORDER PART
NUMBER
LTC1515CS8
LTC1515IS8
S8 PART MARKING
1515
1515I
Consult factory for Military grade parts.
TOP VIEW
SHDN 1
POR 2
5/3 3
GND 4
8 VOUT
7 VIN
6 C1+
5 C1–
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 110°C/W
ORDER PART NUMBER
LTC1515CS8-3/5
LTC1515CS8-3.3/5
LTC1515IS8-3/5
LTC1515IS8-3.3/5
S8 PART MARKING
151535 515I35
515335 15I335
ELECTRICAL CHARACTERISTICS
VIN = 2V to 10V, SHDN = 3V, C1 = 0.22µF, CIN = COUT = 10µF unless otherwise noted (Note 2).
PARAMETER
CONDITIONS
VIN Operating Voltage
VOUT = 5V
q
VOUT = 3V/3.3V
q
VOUT = ADJ
q
VOUT = 3V (LTC1515-3/5)
2V ≤ VIN ≤ 8V, IOUT ≤ 15mA
q
3V ≤ VIN ≤ 8V, IOUT ≤ 50mA
q
VOUT = 3.3V (LTC1515-3.3/5)
2V ≤ VIN ≤ 8V, IOUT ≤ 15mA
q
3V ≤ VIN ≤ 8V, IOUT ≤ 50mA
q
VOUT = 5V (LTC1515-3/5, LTC1515-3.3/5)
2.7V ≤ VIN ≤ 10V, IOUT ≤ 15mA
q
3.3V ≤ VIN ≤ 10V, IOUT ≤ 50mA
q
VFB Feedback Voltage
LTC1515, VFB Ramping Negative
q
VFB Feedback Hysteresis
LTC1515
Effective Output Resistance
LTC1515, VIN = 3V, Step-Up Mode
q
VIN Operating Current
VIN ≤ 5V, IOUT = 0, SHDN = 3V
q
VIN > 5V, IOUT = 0, SHDN = 3V
q
VIN Shutdown Current
SHDN = 0V, VIN ≤ 5V
q
SHDN = 0V, VIN > 5V
Output Ripple
Full Load (Note 2)
Switching Frequency
Full Load
q
5/3, SHDN Input Threshold
VIL
q
VIH
q
5/3, SHDN Input Current
5/3, SHDN = VIN
q
5/3, SHDN = 0V
q
FB Input Current
FB = 1.232V
q
POR Output Low Voltage
ISINK = 100µA, VIN = 3V
q
MIN
2.7
2.0
2.0
2.88
2.88
3.17
3.17
4.8
4.8
1.190
500
0.4
–1
–1
– 50
TYP
3.0
3.0
3.3
3.3
5.0
5.0
1.232
1
60
75
100
650
1.0
1.0
0.05
MAX
10
8
10
3.12
3.12
3.43
3.43
5.2
5.2
1.275
30
100
135
1
25
800
1.6
1
1
50
0.4
UNITS
V
V
V
V
V
V
V
V
V
V
%
Ω
µA
µA
µA
µA
mVP-P
kHz
V
V
µA
µA
nA
V
2
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