Datasheet
2
LTC1682/LTC1682-3.3/LTC1682-5
The ● denotes specifications that apply over the full operating temperature
range, otherwise specifications are T
A
= 25°C. SHDN = V
IN
= 3V; C1 = 0.22µF; C2, C3, C4 = 4.7µF, unless otherwise noted.
(Note 1)
V
IN
to Ground ..............................................–0.3V to 5V
V
OUT
Voltage................................................–0.3V to 6V
CPO to Ground ........................................................ 10V
SHDN, FILT/FB Voltage to
Ground ..................................... –0.3V to (V
IN
+ 0.3V)
V
OUT
Short-Circuit Duration............................ Indefinite
I
OUT
...................................................................... 90mA
Operating Temperature Range
Commercial ............................................ 0°C to 70°C
Extended Commercial (Note 2)........... –40°C to 85°C
Industrial ........................................... –40°C to 85°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
Maximum Junction Temperature..........................125°C
ORDER PART
NUMBER
ORDER PART
NUMBER
LTC1682CMS8
LTC1682CMS8-3.3
LTC1682CMS8-5
LTC1682IMS8
LTC1682IMS8-3.3
LTC1682IMS8-5
LTC1682CS8
LTC1682CS8-3.3
LTC1682CS8-5
LTC1682IS8
LTC1682IS8-3.3
LTC1682IS8-5
MS8 PART MARKING
LTER
LTGT
LTGV
LTHM
LTGU
LTGW
Consult factory for Military grade parts.
S8 PART MARKING
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage LTC1682 ● 1.8 4.4 V
LTC1682-3.3
● 2 4.4 V
LTC1682-5
● 2.7 4.4 V
I
VIN
Shutdown Current SHDN = 0V ● 15 µA
I
VIN
Operating Current I
OUT
= 0mA, Burst Mode
TM
Operation
0°C to 70°C
● 150 250 µA
–40°C to 85°C
● 150 300 µA
FB Input Current LTC1682, FB = 1.235V ● –50 50 nA
FB Voltage LTC1682 ● 1.210 1.235 1.260 V
Regulated Output Voltage LTC1682-3.3, I
OUT
= 1mA ● 3.23 3.30 3.37 V
LTC1682-5, I
OUT
= 1mA ● 4.9 5.0 5.1 V
V
OUT
Temperature Coefficient ±50 ppm
Charge Pump Oscillator Frequency I
OUT
> 200µA, V
IN
= 1.8V to 4.4V ● 480 550 620 kHz
Burst Mode is a trademark of Linear Technology Corporation.
T
JMAX
= 125°C, θ
JA
= 120°C/W
T
JMAX
= 125°C, θ
JA
= 140°C/ W
1682I
1682I33
1682I5
1682
168233
16825
ABSOLUTE MAXIMUM RATINGS
W
WW
U
1
2
3
4
V
OUT
SHDN
FILT/FB*
GND
8
7
6
5
CPO
C
+
V
IN
C
–
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
*PIN3 = FILT FOR LTC1682-3.3/LTC1682-5
= FB FOR LTC1682
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
1
2
3
4
8
7
6
5
V
OUT
SHDN
FILT/FB*
GND
CPO
C
+
V
IN
C
–
*PIN3 = FILT FOR LTC1682-3.3/LTC1682-5
= FB FOR LTC1682
PACKAGE/ORDER INFORMATION
UUW
ELECTRICAL CHARACTERISTICS