Datasheet

2
LTC1514-3.3/LTC1514-5
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
S8 PART MARKING
The ● 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.
LTC1514CS8-3.3
LTC1514CS8-5
LTC1514IS8-3.3
LTC1514IS8-5
15143
15145
1514I3
1514I5
Consult factory for Military grade parts.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage LTC1514-3.3 ● 2.0 8 V
LTC1514-5
● 2.7 10 V
V
OUT
(LTC1514-3.3) 2V ≤ V
IN
≤ 8V, I
OUT
≤ 15mA ● 3.17 3.3 3.43 V
3V ≤ V
IN
≤ 8V, I
OUT
≤ 50mA ● 3.17 3.3 3.43 V
V
OUT
(LTC1514-5) 2.7V ≤ V
IN
≤ 10V, I
OUT
≤ 15mA ● 4.8 5 5.2 V
3.3V ≤ V
IN
≤ 10V, I
OUT
≤ 50mA ● 4.8 5 5.2 V
V
IN
Operating Current V
IN
≤ 5V, I
OUT
= 0, SHDN = 3V ● 60 100 µA
V
IN
> 5V, I
OUT
= 0, SHDN = 3V ● 75 120 µA
V
IN
Shutdown Current SHDN = 0V, V
IN
≤ 5V ● 10 20 µA
SHDN = 0V, V
IN
> 5V 35 µA
Output Ripple Full Load (Note 2) 100 mV
P-P
Switching Frequency ● 500 650 800 kHz
LBI Trip Point LBI Ramping Negative ● 1.110 1.145 1.180 V
LBI Trip Point Hysteresis 1%
LBI Input Current LBI = 1.145V ● –50 50 nA
LBO V
OL
I
SINK
= 100µA, V
IN
= 3V ● 0.025 0.4 V
LBO Leakage Current V
LBO
= 5V, LBI = V
IN
● –1 1 µA
SHDN Input Threshold V
IL
● 0.4 1 V
V
IH
● 1 1.6 V
SHDN Input Current SHDN = V
IN
● –1 1 µA
SHDN = 0V
● –1 1 µA
I
OUT
Short-Circuit Current V
OUT
= 0V ● 12 40 mA
t
ON
Soft Start Turn-On Time 4 ms
V
IN
= 2V to 10V, SHDN = 3V, C1 = 0.22µF, C
IN
= C
OUT
= 10µF, unless otherwise noted (Note 2).
ELECTRICAL CHARACTERISTICS
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
SHDN
LBO
LBI
GND
V
OUT

V
IN

C1
+

C1
–
T
JMAX
= 125°C, θ
JA
= 110°C/ W
Note 2: For V
IN
≥ 8V, C
OUT
= 22µF.
(Note 1)
V
IN
to GND................................................ –0.3V to 12V
V
OUT
to GND ............................................. –0.3V to 12V
SHDN, LBI, LBO to GND ........................... –0.3V to 12V
V
OUT
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