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| LTC3424_15 Datasheet, PDF (3/12 Pages) Linear Technology – Low Output Voltage, 3MHz Micropower Synchronous Boost Converters | |||
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LTC3423/LTC3424
ELECTRICAL CHARACTERISTICS
The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VIN = 1.2V, VOUT = 3.3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
SHDN Input High
SHDN Input Low
VSHDN = VIN = VOUT
1
V
0.4
V
SHDN Input Current
VSHDN = 5.5V
0.01
1
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3423/LTC3424 are guaranteed to meet performance
specifications from 0°C to 70°C. Specifications over the â40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Current is measured into VDD since the supply current is
bootstrapped to the VDD pin. The outputs are not switching.
Note 4: Once the output is started, the IC is not dependant upon the VIN
supply.
TYPICAL PERFOR A CE CHARACTERISTICS
Switching Waveform on SW Pin
Transient Response
150mA to 450mA
SW
0.5V/DIV
0V
ILOAD = 500mA 100ns/DIV
VOUT 1.8V
3423/24 G01
Burst Mode Operation
at 500µA Load
VOUT
100mV/DIV
AC COUPLED
VOUT
100mV/DIV
AC COUPLED
450mA
IOUT
150mA
COUT = 44µF
L = 2.2µH
fOSC = 1MHz
200µs/DIV
Burst Mode Operation
at 10mA Load
VOUT
100mV/DIV
AC COUPLED
3423/24 G02
SW
1V/DIV
VIN = 1.2V
1ms/DIV
VOUT = 1.8V
COUT = 44µF
MODE/SYNC PIN = HIGH
3423/24 G03
SW
1V/DIV
VIN = 1.2V
500µs/DIV
VOUT = 1.8V
COUT = 44µF
MODE/SYNC PIN = HIGH
3423/24 G04
34234f
3
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