Datasheet

LTC3450
3
3450fa
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3.6V, V
OUT
= 5.2V unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Specification is guaranteed by design and not 100% tested in
production.
V3X Output Voltage Load on V3X = 100µA ● 14.688 15.2 15.912 V
V2X Efficiency Load on V2X = 100µA, (Note 2) 90 %
V3X Efficiency Load on V3X = 100µA, (Note 2) 80 %
Output Impedance V2X, V3X Flying Capacitors = 0.1µF1kΩ
V
NEG
Output Voltage Load on V
NEG
= 100µA, V
INV
= V2X ● –10.608 –10.1 –9.792 V
V
NEG
Efficiency Load on V
NEG
= 100µA (Note 2) 80 %
Output Impedance V
NEG
Flying Capacitor = 0.1µF1kΩ
Switching Frequency Charge Pumps MODE = V
IN
62.5 kHz
Switching Frequency Charge Pumps MODE = GND 3.75 kHz
V
NEG
to V3X Delay (Note 3) 3 4 10 ms
Logic Inputs
SHDN Pin Threshold ● 0.4 0.77 1.2 V
MODE Pin Threshold 1.6 V
Note 3: Measured from point at which V
NEG
crosses –5V to point at which
C2
–
starts switching.
Note 4: The LTC3450E 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.