LM2724AM datasheet(5/8 Pages) NSC

5 / 8 page

Electrical Characteristics

LM2724A (Continued)

CC = BOOT = SYNC = 5V, SW = GND = 0V, unless otherwise specified. Typicals and limits appearing in plain type apply for

A =TJ = +25˚C. Limits appearing in boldface type apply over the entire operating temperature range.

Symbol

Parameter

Condition

Min

Typ

Max

Units

leak_IN

IN Pin Leakage Current

IN = 0V, Source Current

µA

IN = 5V, Sink Current

on_min1

Minimum Positive Pulse

Width at IN Pin

(Note 5)

160

on_min2

Minimum Positive Pulse

Width at IN Pin for HG to

Respond

(Note 6)

on_min3

Minimum Positive Pulse

Width at IN Pin for LG to

Respond

(Note 7)

off_min1

Minimum Negative Pulse

Width at IN Pin for LG to

Respond

(Note 8)

off_min2

Minimum Negative Pulse

Width at IN Pin for HG to

Respond

(Note 9)

IH_IN

IN High Level Input

Voltage

When IN pin goes high from

55%

IL_IN

IN Low Level Input

Voltage

When IN pin goes low from

25%

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating ratings are conditions under which the device operates

correctly. The gaurnteed specifications apply only for the listed test conditions. Some performance characteristics may degrade when the part is not operated under

listed conditions.

Note 2: If BOOT voltage exceeds this value, the ESD structure will degrade.

Note 3: Maximum allowable power dissipation is a function of the maximum junction temperature, TJMAX, the junction-to-ambient thermal resistance, θJA, and the

ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PMAX =(TJMAX-TA)/ θJA. The junction-to-

ambient thermal resistance,

θJA, for LM2724A is 172˚C/W. For a TJMAX of 150˚C and TA of 25˚C, the maximum allowable power dissipation is 0.7W. The θJA, for

LM2724A LLP package is 39˚C/W. For a TJMAX of 150˚C and TA of 25˚C, the maximum allowable power dissipation is 3.2W.

Note 4: ESD machine model susceptibility is 200V.

Note 5: If the positive pulse width at IN pin is below this value but above ton_min2, the pulse is internally stretched to ton_min1, so the HG width will be a constant

value.

Note 6: If the positive pulse width at IN pin is below this value but above ton_min3, then HG stops responding while LG still responds to the pulse.

Note 7: If the positive pulse width at IN pin is below this value, the pulse will be completely ignored. Neither HG or LG will respond to it.

Note 8: If the negative pulse width at IN pin is below this value but above toff_min2, then LG stops responding while HG still responds.

Note 9: If the negative pulse width at IN pin is below this value, the pulse will be completely ignored. Neither HG or LG will respond to it.

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