3

LTC1430

SYMBOL

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: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to ground unless otherwise

specified.

Note 3: This parameter is guaranteed by correlation and is not tested

directly.

Note 4: Supply current in normal operation is dominated by the current

needed to charge and discharge the external FET gates. This will vary with

the LTC1430 operating frequency, operating voltage and the external FETs

used.

ELECTRICAL CHARACTERISTICS

SHDN Input High Voltage

q

2.4

V

SHDN Input Low Voltage

q

0.8

V

SHDN Input Current

q

±0.1

±1

µA

Error Amplifier Open-Loop DC Gain

(LTC1430I)

q

40

48

dB

Error Amplifier Transconductance

(LTC1430C)

650

µMho

(LTC1430I)

q

300

650

1200

µMho

(Note 5)

1300

µMho

q

812

16

µA

q

812

17

µA

Soft-Start Source Current

q

–8

–12

–16

µA

q

–8

–12

–17

µA

Driver Rise/Fall Time

80

250

ns

Driver Non-Overlap Time

25

130

250

ns

Maximum Duty Cycle

q

90

96

%

q

90

96

%

q

83

88

%