LTC1503-1.8/LTC1503-2
ABSOLUTE
AXI U
RATI GS
V
IN
, C1
+
, C1
–
, C2
+
, C2
–
to GND ............... – 0.3V to 6.5V
SHDN/SS to GND ......................... – 0.3V to (V
IN
+ 0.3V)
V
OUT
Short-Circuit Duration ............................. Indefinite
Commercial Temperature Range ............ – 40°C to 85°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
V
OUT
C1
–
C1
+
V
IN
1
2
3
4
8
7
6
5
C2
–
GND
C2
+
SHDN/SS
ORDER PART
NUMBER
LTC1503CMS8-1.8
LTC1503CMS8-2
MS8 PART MARKING
LTFX
LTHN
V
OUT
1
C1
–
C1
+
2
3
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 125°C,
θ
JA
= 200°C/W
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
The
q
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
IN
= V
IN(MIN)
to V
IN(MAX)
, C1 = C2 = 1µF, C
IN
= C
OUT
= 10µF unless otherwise noted.
PARAMETER
V
IN
Operating Voltage
V
OUT
V
IN
Operating Current
V
IN
Shutdown Current
Output Ripple Voltage
Efficiency
Switching Frequency
SHDN/SS Input Threshold
SHDN/SS Input Current
V
OUT
Short-Circuit Current
V
OUT
Turn-On Time
V
SHDN/SS
= 0V (Note 3)
V
SHDN/SS
= V
IN
V
OUT
= 0V (Note 4)
C
SS
= 0nF, V
IN
= 3.6V, C
OUT
= 10µF
C
SS
= 10nF
LTC1503-1.8, 0mA < I
OUT
< 100mA
LTC1503-2, 0mA < I
OUT
< 100mA
I
OUT
= 0mA
SHDN/SS = 0V
LTC1503-X, V
IN
= 3.6V, I
OUT
= 100mA
LTC1503-2, V
IN
= 3.6V, I
OUT
= 100mA
Oscillator Free Running
q
q
q
q
CONDITIONS
q
q
q
q
q
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC1503C is guaranteed to meet specified performance from
0°C to 70°C and is designed, characterized and expected to meet these
extended temperature limits, but are not tested at – 40°C and 85°C. The
LTC1503I is guaranteed to meet the extended temperature limits.
2
U
U
W
W W
U
W
(Note 1)
Industrial Temperature Range ............... – 40°C to 85°C
Specified Temperature Range (Note 2) ... – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
TOP VIEW
8 C2
–
7 GND
6 C2
+
5 SHDN/SS
ORDER PART
NUMBER
LTC1503CS8-1.8
LTC1503CS8-2
LTC1503IS8-1.8
LTC1503IS8-2
S8 PART MARKING
150318
15032
503I18
1503I2
V
IN
4
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 125°C,
θ
JA
= 150°C/W
MIN
2.4
1.728
1.920
TYP
1.8
2.0
25
5
25
82.9
600
MAX
6
1.872
2.080
50
10
UNITS
V
V
V
µA
µA
mV
P-P
%
kHz
0.2
– 3.5
–1
8
0.35
–2
22
0.1
8
0.5
–1
1
50
V
µA
µA
mA
ms
ms
Note 3:
Currents flowing into the device are positive polarity. Currents
flowing out of the device are negative polarity.
Note 4:
When V
OUT
is less than 150mV, I
OUT
is limited to much less than
the maximum rated output current to prevent damage to the output
devices.
LINER [ LINEAR TECHNOLOGY ]
