3

LTC1430A

ELECTRICAL CHARACTERISTICS

LTC1430AC

LTC1430AI

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

SHDN Input High Voltage

q

2.4

2.4

V

SHDN Input Low Voltage

q

0.8

0.8

V

SHDN Input Current

q

±0.1 ±1

±0.1 ±1

µA

Error Amplifier Transconductance

q

350

650

1100

300

650

1200

µmho

(Note 4)

2400

2400

µmho

Error Amplifier Open-Loop Gain

(Note 5)

q

40

48

40

48

dB

q

8

12

16

8

12

17

µA

Soft Start Source Current

q

–8

–12

– 16

–8

–12

– 17

µA

Driver Rise/Fall Time

80

250

80

250

ns

Driver Non-Overlap Time

25

130

250

25

130

250

ns

Maximum Duty Cycle

q

90

93.5

89

93.5

%

temperature range.

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: Supply current in normal operation is dominated by the current

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

the LTC1430A operating frequency, operating voltage and the external

FETs used.

Note 5: The open-loop DC gain and transconductance from the FB pin

respectively.