LTC3421

3

3421f

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Frequency Accuracy

q

0.85

1

1.15

MHz

SYNC Input High

q

2.2

V

SYNC Input Low

q

0.8

V

SYNC Input Current

q

0.01

1

µA

ENB Input High

q

1.2

V

ENB Input Low

q

0.4

V

ENB Input Current

q

1

µA

SHDN Input High

1.00

V

0.65

V

SHDN Input Low

0.25

V

SHDN Input Current

q

0.01

1

µA

REF Output Voltage

q

1.183

1.22

1.257

V

REF Output Current Range

–100

8

µA

Error Amp Transconductance

45

µs

LBI Threshold

Falling Edge

q

0.58

0.6

0.62

V

LBI Input Current

q

0.01

1

µA

LBO Low Voltage

12.0

50

mV

0.25

0.5

V

LBO Leakage

0.01

1

µA

SS Current Source

1.2

2.4

5

µA

BURST Threshold Voltage

Falling Edge

0.87

0.97

1.07

V

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC3421E 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.

bootstrapped to the output. The current will reflect to the input supply by

supply.

Note 5: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. Junction

temperature will exceed 125

°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may impair device reliability.