LTC1503IS8-1.8 Ver la hoja de datos (PDF) - Linear Technology
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LTC1503IS8-1.8 Datasheet PDF : 12 Pages
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LTC1503-1.8/LTC1503-2
ABSOLUTE AXI U RATI GS (Note 1)
VIN, C1+, C1–, C2+, C2– to GND ............... – 0.3V to 6.5V
SHDN/SS to GND ......................... – 0.3V to (VIN + 0.3V)
VOUT Short-Circuit Duration ............................. Indefinite
Commercial Temperature Range ............ – 40°C to 85°C
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
UW U
PACKAGE/ORDER I FOR ATIO
VCOU1T–
1
2
C1+ 3
VIN 4
TOP VIEW
8 C2–
7 GND
6 C2+
5 SHDN/SS
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 200°C/W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1503CMS8-1.8
LTC1503CMS8-2
MS8 PART MARKING
LTFX
LTHN
TOP VIEW
VOUT 1
C1– 2
C1+ 3
VIN 4
8 C2–
7 GND
6 C2+
5 SHDN/SS
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 150°C/W
ORDER PART
NUMBER
LTC1503CS8-1.8
LTC1503CS8-2
LTC1503IS8-1.8
LTC1503IS8-2
S8 PART MARKING
150318 503I18
15032 1503I2
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VIN = VIN(MIN) to VIN(MAX), C1 = C2 = 1µF, CIN = COUT = 10µF unless otherwise noted.
PARAMETER
VIN Operating Voltage
VOUT
VIN Operating Current
VIN Shutdown Current
Output Ripple Voltage
Efficiency
Switching Frequency
SHDN/SS Input Threshold
SHDN/SS Input Current
VOUT Short-Circuit Current
VOUT Turn-On Time
CONDITIONS
LTC1503-1.8, 0mA < IOUT < 100mA
LTC1503-2, 0mA < IOUT < 100mA
IOUT = 0mA
SHDN/SS = 0V
LTC1503-X, VIN = 3.6V, IOUT = 100mA
LTC1503-2, VIN = 3.6V, IOUT = 100mA
Oscillator Free Running
VSHDN/SS = 0V (Note 3)
VSHDN/SS = VIN
VOUT = 0V (Note 4)
CSS = 0nF, VIN = 3.6V, COUT = 10µF
CSS = 10nF
MIN
TYP
MAX
UNITS
q 2.4
6
V
q 1.728
1.8
1.872
V
q 1.920
2.0
2.080
V
q
25
50
µA
q
5
10
µA
25
mVP-P
82.9
%
600
kHz
q 0.2
0.35
0.5
V
q – 3.5
–2
–1
µA
q
–1
1
µA
q
8
22
50
mA
0.1
ms
8
ms
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.
Note 3: Currents flowing into the device are positive polarity. Currents
flowing out of the device are negative polarity.
Note 4: When VOUT is less than 150mV, IOUT is limited to much less than
the maximum rated output current to prevent damage to the output
devices.
2
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