LTC4366 datasheet(5/24 Pages) LINER

5 / 24 page

LTC4366

436612fe

For more information www.linear.com/LTC4366

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. All voltages relative to VSS, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

FB, SD, TIMER

VFB(REG)

3% FB pin Regulation Threshold (OUT – FB)

1.193

1.23

1.267

IFB

FB Pin Leakage Current

OUT – FB = 1.2V

±1

µA

VSD(TH)

SD Pin Threshold Voltage (VDD – SD)

Falling

1.0

1.5

2.3

VSD(HYST)

SD Pin Hysteresis

LTC4366C/I/H

LTC4366MP

147

129

280

530

ISD

SD Pin Input Pull-Up Current

VDD – SD = 0.7V

LTC4366C/I/H

LTC4366MP

–0.7

–0.5

–1.6

–3.5

µA

VTIMER(H)

TIMER Pin Threshold

TIMER Rising, VDD = 7V, OUT = VZ(OUT) l

2.6

2.8

3.1

ITIMER(UP)

TIMER Pin Pull-Up Current

TIMER = 1V

LTC4366C/I/H

LTC4366MP

–5.1

–4

–9

–13

µA

ITIMER(DN)

TIMER Pin Pull-Down Current

TIMER = 1V

LTC4366C/I/H

LTC4366MP

0.9

0.7

1.8

2.8

µA

ITIMER(RATIO) TIMER Pin Current Ratio ITIMER(DN)/ITIMER(UP)

AC Characteristics

tDLY – SD

SD Low to Gate Low Filter Time

Step VDD – SD from 0V to 3V

420

700

1200

µs

tDLY – FAST

FB Low to Gate Low Delay Time

Step OUT – FB from 0V to 1.3V

150

300

tD(COOL)

Cool-Down Timer (Internal)

VDD = VZ(VDD)

LTC4366C/I/H

LTC4366MP

5.9

Seconds

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: All currents into pins are positive.

Note 3: Limits on the maximum rating is defined as whichever limit occurs

first. An internal clamp limits the GATE pin to a maximum of 12V above

source. Driving this pin to voltages beyond the clamp may damage the

device.

Note 4: TJ is calculated from the ambient temperature, TA, and power

dissipation, PD, according to the formula:

TJ = TA + (PD • θJA)

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