2
LTC1502-3.3
ABSOLUTE MAXIMUM RATINGS
W
WW
U
Operating Temperature Range
Commercial ............................................ 0°C to 70°C
Extended Commercial (Note 4).......... –40°C to 85°C
Industrial ........................................... –40°C to 85°C
Lead Temperature (Soldering, 10 sec)................. 300°C
V
IN
to GND.................................................. –0.3V to 2V
V
OUT
to GND ............................................... –0.3V to 5V
All Other Pins to GND ................................. –0.3V to 5V
V
OUT
Short-Circuit Duration............................ Indefinite
Storage Temperature Range ................ –65°C to 150°C
(Note 1)
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART
NUMBER
ORDER PART
NUMBER
LTC1502CS8-3.3
LTC1502IS8-3.3
S8 PART MARKING
Consult factory for Military grade parts.
T
JMAX
= 125°C, θ
JA
= 150°C/ W
LTC1502CMS8-3.3
MS8 PART MARKING
LTEC
T
JMAX
= 125°C, θ
JA
= 250°C/ W
1
2
3
4
C2
C1
+
C1
–
/SHDN
GND
8
7
6
5
V
OUT
C3
+
C3
–
V
IN
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
1
2
3
4
8
7
6
5
TOP VIEW
V
OUT
C3
+
C3
–
V
IN
C2
C1
+
C1
–
/SHDN
GND
S8 PACKAGE
8-LEAD PLASTIC SO
150233
502I33
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage ● 0.9 1.8 V
Minimum V
IN
Start-Up Voltage T
A
= 0°C to 70°C (Note 2) ● 0.75 0.9 V
T
A
= –40°C to 85°C (Note 2) ● 1.1 V
V
OUT
Voltage I
OUT
≤ 3.5mA, 0.9V ≤ V
IN
≤ 1.8V ● 3.17 3.3 3.43 V
I
OUT
≤ 10mA, 1V ≤ V
IN
≤ 1.8V ● 3.17 3.3 3.43 V
V
IN
Operating Current I
OUT
= 0mA ● 40 90 µA
V
IN
Shutdown Current C1
–
/SHDN = 0V ● 515 µA
Output Ripple I
OUT
= 10mA, V
IN
= 1.25V 50 mV
P-P
Efficiency V
IN
= 1V, I
OUT
= 10mA 77 %
Switching Frequency Oscillator Free-Running 500 kHz
C1
–
/SHDN Shutdown Input Threshold C1
–
/SHDN in Hi-Z Sampling State ● 0.20 0.55 0.85 V
C1
–
/SHDN Shutdown Input Current C1
–
/SHDN = 0V (Note 3) ● –0.5 –2.5 –8 µA
V
OUT
Turn-On Time V
IN
= 1V, I
OUT
= 0mA 5 ms
V
OUT
Short-Circuit Current V
IN
= 1.5V, V
OUT
Forced to 0V 20 mA
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
IN
= 0.9V to 1.8V, C1 = C3 = 1µF, C
IN
= C2 = C
OUT
= 10µF unless otherwise specified.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Start-up testing is done with a 100kΩ equivalent load on V
OUT
.
Note 3: Currents flowing into the device are positive polarity. Currents
flowing out of the device are negative polarity.
Note 4: Commercial grade specifications are guaranteed over the 0°C to
70°C operating temperature range. In addition, commercial grade
specifications are assured over the –40°C to 85°C operating temperature
range by design, characterization and correlation with statistical process
controls. Industrial grade specifications are guaranteed and tested over the
–40°C to 85°C operating temperature range.
