2
LTC1262
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
WU
U
PACKAGE
/
O
RDER I FOR ATIO
(Note 1)
Supply Voltage (V
CC
) ................................................ 6V
Input Voltage (SHDN) ................... –0.3V to V
CC
+ 0.3V
Output Current (I
OUT
) ........................................... 50mA
Operating Temperature Range
LTC1262C................................................ 0°C to 70°C
LTC1262I........................................... –40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ELECTRICAL CHARACTERISTICS
Consult factory for Military grade parts.
1
2
3
4
8
7
6
5
TOP VIEW
C1
–
C1
+
C2
–
C2
+
SHDN
GND
V
OUT
V
CC
N8 PACKAGE
8-LEAD PDIP
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150°C, θ
JA
= 100°C/W (N8)
T
JMAX
= 150°C, θ
JA
= 150°C/W (S8)
V
CC
= 4.75V to 5.5V, T
A
= –40°C to 85°C, (Notes 2, 3), unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
Output Voltage 0mA ≤ I
OUT
≤ 30mA, V
SHDN
= 0V, 0°C ≤ T
A
≤ 70°C
●
11.4 12.6 V
0mA ≤ I
OUT
≤ 30mA, V
SHDN
= 0V, –40°C ≤ T
A
≤ 85°C
●
11.2 12.6 V
I
CC
Supply Current No Load, V
SHDN
= 0V, 0°C ≤ T
A
≤ 70°C
●
0.5 1.0 mA
No Load, V
SHDN
= 0V, –40°C ≤ T
A
≤ 85°C
●
0.5 1.3 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
= 30mA
●
300 kHz
Power Efficiency V
CC
= 5V, I
OUT
= 30mA
●
74 %
R
SW
V
CC
to V
OUT
Switch Impedance V
CC
= V
SHDN
= 5V, I
OUT
= 0mA
●
0.18 2 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, 0°C ≤ T
A
≤ 70°C
●
–20 –10 –5 µA
V
CC
= 5V, V
SHDN
= 0V, –40°C ≤ T
A
≤ 85°C
●
–35 –10 –5 µA
V
CC
= 5V, V
SHDN
= 5V
●
0.06 10 µA
t
ON
Turn-On Time C1 = C2 = 0.22µF, C
IN
= C
OUT
= 4.7µF, (Figures 1, 2) 500 µs
t
OFF
Turn-Off Time C1 = C2 = 0.22µF, C
IN
= C
OUT
= 4.7µF, (Figures 1, 2) 3.3 ms
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.
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute maximum ratings are those values beyond which the life
of the device may be impaired.
ORDER PART
NUMBER
LTC1262CN8
LTC1262CS8
LTC1262IS8
S8 PART MARKING
1262
1262I
