LTC1514 Просмотр технического описания (PDF) - Linear Technology
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LTC1514
Linear Technology
LTC1514 Datasheet PDF : 8 Pages
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LTC1514-3.3/LTC1514-5
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN to GND ................................................ – 0.3V to 12V
VOUT to GND ............................................. – 0.3V to 12V
SHDN, LBI, LBO 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 INFORMATION
TOP VIEW
SHDN 1
LBO 2
LBI 3
GND 4
8 VOUT
7 VIN
6 C1+
5 C1–
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 110°C/ W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1514CS8-3.3
LTC1514CS8-5
LTC1514IS8-3.3
LTC1514IS8-5
S8 PART MARKING
15143 1514I3
15145 1514I5
ELECTRICAL CHARACTERISTICS
VIN = 2V to 10V, SHDN = 3V, C1 = 0.22µF, CIN = COUT = 10µF, unless otherwise noted (Note 2).
PARAMETER
VIN Operating Voltage
VOUT (LTC1514-3.3)
VOUT (LTC1514-5)
VIN Operating Current
VIN Shutdown Current
Output Ripple
Switching Frequency
LBI Trip Point
LBI Trip Point Hysteresis
LBI Input Current
LBO VOL
LBO Leakage Current
SHDN Input Threshold
SHDN Input Current
IOUT Short-Circuit Current
tON
CONDITIONS
LTC1514-3.3
LTC1514-5
2V ≤ VIN ≤ 8V, IOUT ≤ 15mA
3V ≤ VIN ≤ 8V, IOUT ≤ 50mA
2.7V ≤ VIN ≤ 10V, IOUT ≤ 15mA
3.3V ≤ VIN ≤ 10V, IOUT ≤ 50mA
VIN ≤ 5V, IOUT = 0, SHDN = 3V
VIN > 5V, IOUT = 0, SHDN = 3V
SHDN = 0V, VIN ≤ 5V
SHDN = 0V, VIN > 5V
Full Load (Note 2)
LBI Ramping Negative
LBI = 1.145V
ISINK = 100µA, VIN = 3V
VLBO = 5V, LBI = VIN
VIL
VIH
SHDN = VIN
SHDN = 0V
VOUT = 0V
Soft Start Turn-On Time
MIN
q
2.0
q
2.7
q
3.17
q
3.17
q
4.8
q
4.8
q
q
q
q
500
q 1.110
q
– 50
q
q
–1
q
0.4
q
q
–1
q
–1
q
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.
2
TYP
3.3
3.3
5
5
60
75
10
100
650
1.145
1
0.025
1
1
12
4
MAX
8
10
3.43
3.43
5.2
5.2
100
120
20
35
800
1.180
50
0.4
1
1.6
1
1
40
UNITS
V
V
V
V
V
V
µA
µA
µA
µA
mVP-P
kHz
V
%
nA
V
µA
V
V
µA
µA
mA
ms
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