LTC3401 Datasheet, PDF (3/16 Pages) Linear Technology – 1A, 3MHz Micropower Synchronous Boost Converter

LTC3401
ELECTRICAL CHARACTERISTICS
The q denotes specifications that apply over the full operating temperature range, otherwise specifications are at T_A = 25°C.
V_IN = 1.2V, V_OUT = 3.3V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
PGOOD Low Voltage
PGOOD Leakage
SHDN Input High
SHDN Input Low
I_PGOOD = 1mA
V_OUT = 1V, I_PGOOD = 20µA
V_PGOOD = 5.5V
V_SHDN = V_IN = V_OUT
0.1
0.2
0.1
0.4
0.01
1
1
0.4
SHDN Input Current
Thermal Shutdown
V_SHDN = 5.5V
0.01
1
170
UNITS
V
V
µA
V
V
µA
°C
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3401 is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current is measured into V_OUT since the supply current is
bootstrapped to the V_OUT pin and in the application will reflect to the input
supply by (V_OUT/V_IN) • Efficiency. The outputs are not switching.
Note 4: Once the output is started, the IC is not dependant upon the V_IN
supply.
TYPICAL PERFOR A CE CHARACTERISTICS
Switching Waveform on SW Pin
SW Pin and Inductor Current (I_C)
in Discontinuous Mode. Ringing
Control Circuitry Eliminates High
Frequency Ringing
Transient Response 5mA to 50mA
SW
1V/DIV
50ns/DIV
I_L
50mA/DIV
0A
SW
1V/DIV
0V
3401 G01
V_OUT
100mV/DIV
200ns/DIV
3401 G02
50mA
I_OUT
5mA
C_OUT = 22µF
L = 3.3µH
f_OSC = 1MHz
200µs/DIV
3401 G03
3401fa
3