Datasheet
2
LTC1263
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
Consult factory for Industrial and Military grade parts and TSSOP package
option.
4.75V ≤ V
CC
≤ 5.5V, T
A
= 0°C to 70°C (Notes 2, 3).
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
Output Voltage 0mA ≤ I
OUT
≤ 60mA, V
SHDN
= 0V ● 11.4 12.6 V
I
CC
Supply Current No Load, V
SHDN
= 0V ● 0.32 1.0 mA
I
SHDN
Shutdown Supply Current No Load, V
SHDN
= V
CC
● 0.5 10 µA
f
OSC
Oscillator Frequency V
CC
= 5V, I
OUT
= 60mA 300 kHz
Power Efficiency V
CC
= 5V, I
OUT
= 60mA 76 %
R
SW
V
CC
to V
OUT
Switch Impedance V
CC
= V
SHDN
= 5V, I
OUT
= 0mA ● 0.3 1 kΩ
V
IH
SHDN Input High Voltage ● 2.4 V
V
IL
SHDN Input Low Voltage ● 0.8 V
SHDN Input Current V
CC
= 5V, V
SHDN
= 0V ● –40 –20 –5 µA
V
CC
= 5V, V
SHDN
= 5V ● –10 0 10 µA
t
ON
Turn-On Time C1 = C2 = 0.47µF, C3 = C4 = 10µF (Note 4) (Figures 1, 2) 600 µs
t
OFF
Turn-Off Time C1 = C2 = 0.47µF, C3 = C4 = 10µF (Figures 1, 2) 10 ms
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: All typicals are given at V
CC
= 5V, T
A
= 25°C.
Note 4: A higher value output capacitor can be used but the “turn-on” and
“turn-off” time will increase proportionally.
(Note 1)
Supply Voltage (V
DD
)................................................. 6V
Input Voltage (SHDN) .....................–0.3V to V
CC
+ 0.3V
I
OUT
Continuous.................................................... 90mA
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
T
JMAX
= 125°C, θ
JA
= 150°C/ W
1
2
3
4
8
7
6
5
TOP VIEW
SHDN
GND
V
OUT
V
CC
C1
–
C1
+
C2
–
C2
+
S8 PACKAGE
8-LEAD PLASTIC SO
LTC1263CS8
ORDER PART
NUMBER