Datasheet

2
LTC1522
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage ● 2.7 5 V
V
OUT
Output Voltage 2.7V ≤ V
IN
≤ 5V, I
OUT
≤ 10mA ● 4.8 5.0 5.2 V
3V ≤ V
IN
≤ 5V, I
OUT
≤ 20mA ● 4.8 5.0 5.2 V
I
CC
Operating Supply Current 2.7V ≤ V
IN
≤ 5V, I
OUT
= 0mA, SHDN = 0V ● 615 µA
Shutdown Supply Current 2.7V ≤ V
IN
≤ 3.6V, I
OUT
= 0mA, SHDN = V
IN
● 0.005 1 µA
3.6V < V
IN
≤ 5V, I
OUT
= 0mA, SHDN = V
IN
● 2.5 µA
Output Ripple V
IN
= 3V, I
OUT
= 10mA 70 mV
P-P
Efficiency V
IN
= 3V, I
OUT
= 10mA 82 %
f
OSC
Switching Frequency Oscillator Free Running 700 kHz
V
IH
SHDN Input Threshold ● (0.7)(V
IN
)V
V
IL
● 0.4 V
I
IH
SHDN Input Current V
SHDN
= V
IN
● –1 1 µA
I
IL
V
SHDN
= 0V ● –1 1 µA
t
ON
V
OUT
Turn-On Time V
IN
= 3V, I
OUT
= 0mA 1 ms
ABSOLUTE MAXIMUM RATINGS
W
WW
U
(Note 1)
V
IN
to GND.................................................. –0.3V to 6V
V
OUT
to GND ............................................... –0.3V to 6V
SHDN to GND ............................................. –0.3V to 6V
V
OUT
Short-Circuit Duration............................ Indefinite
Commercial Temperature Range ................ 0°C to 70°C
Extended Commercial Operating
Temperature Range (Note 2) ............. –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
Consult factory for Industrial and Military grade parts.
S8 PART MARKING
ORDER PART
NUMBER
MS8 PART MARKING
ELECTRICAL CHARACTERISTICS
ORDER PART
NUMBER
The ● denotes specifications which apply over the specified temperature
range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: C grade device specifications are guaranteed over the 0°C to 70°C
temperature range. In addition, C grade device specifications are assured
over the –40°C to 85°C temperature range by design or correlation, but
are not production tested.
V
IN
= 2.7V to 5V, C
FLY
= 0.22µF, C
IN
= C
OUT
= 10µF, T
MIN
to T
MAX
unless otherwise specified. (Note 2)
T
JMAX
= 125°C, θ
JA
= 150°C/ W
1
2
3
4
8
7
6
5
TOP VIEW
NC
SHDN
GND
C
–
NC
V
IN

V
OUT
C
+
S8 PACKAGE
8-LEAD PLASTIC SO
LTCG
T
JMAX
= 125°C, θ
JA
= 160°C/ W
1
2
3
4
NC
V
IN

V
OUT

C
+
8
7
6
5
NC
SHDN
GND
C
–
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
LTC1522CMS8
1522
LTC1522CS8