LTC2913 datasheet(4/24 Pages) LINER

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LT4363

4363fa

Note 2: All currents into device pins are positive all current out of device

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

specified.

Note 3: An internal clamp limits the GATE pin to a minimum of 10V above

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

the device.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

ITMR

TMR Pull-up Current, Overvoltage

TMR = 1V, FB = 1.5V,

ΔVDS = 0.5V

TMR = 1V, FB = 1.5V,

ΔVDS = 75V

–1.7

–42

–4

–50

–6

–58

µA

TMR Pull-up Current, OV Warning

TMR = 1.325V, FB = 1.5V,

ΔVDS = 0.5V

–3

–5

–7

µA

TMR Pull-up Current, Overcurrent

TMR = 1V,

ΔVSNS = 100mV, ΔVDS = 0.5V

TMR = 1V,

ΔVSNS = 100mV, ΔVDS = 80V

–5

–190

–9

–250

–13

–310

µA

TMR Pull-up Current, Cool Down

TMR = 3V, FB = 1.5V,

ΔVSNS = 0V, ΔVDS = 0V

–1

–2.3

–3.5

µA

TMR Pin Pull-down Current, Cool Down VTMR = 3V, FB = 1.5V, ΔVSNS = 0V, ΔVDS = 0V

µA

VTMR(F)

VTMR(G)

VTMR(R)

TMR Fault Threshold

TMR Gate Off Threshold

TMR Restart Threshold

TMR Rising

TMR Falling, LT4363-2

1.235

1.335

0.47

1.275

1.375

0.5

1.31

1.41

0.53

ΔVTMR

Early Warning Window

VTMR(G) – VTMR(F)

100

120

VTMR(H)

TMR Cool Down High Threshold

VCC = 7V to 80V, TMR Rising

3.7

4.3

VUV

UV Input Threshold

UV Rising

1.24

1.275

1.31

VUV(HYST) UV Input Hysteresis

VOV

OV Input Threshold

OV Rising

1.24

1.275

1.31

VOV(HYST) OV Input Hysteresis

7.5

IIN

UV, OV Input Current

UV = 1.275V

UV = –60V

±0.2

–1

±1

–2

µA

ILEAK

FLT, ENOUT Leakage Current

FLT, ENOUT = 80V

±0.5

±2.5

µA

VOL

FLT, ENOUT Output Low

ISINK = 0.1mA

ISINK = 2mA

300

800

ΔVOUT(TH) OUT High Threshold

ΔVOUT = VCC – VOUT, ENOUT From Low to High

0.25

0.5

0.75

ΔVOUT(RST) OUT Reset Threshold

ENOUT From High to Low

1.9

2.7

3.6

IOUT

OUT Input Current

VCC = OUT = 12V, SHDN Open

VCC = OUT = 12V, SHDN = 0V

0.25

0.5

VSHDN

SHDN Threshold

VCC = 4V to 80V

0.6

0.4

1.4

1.7

2.1

VSHDN(Z)

SHDN Open Voltage

VCC = 4V to 80V

2.2

ISHDN

SHDN Current

SHDN = 0.4V

–1

–4

–8

µA

tRESET

SHDN Reset Time

SHDN ≤ 0.4V; LT4363-1

100

µs

Retry Duty Cycle; Overvoltage

VCC = 80V, OUT = 16V, FB = 1.5V; LT4363-2

Retry Duty Cycle; Output Short

VCC = 12V, OUT = 0V, ∆VSNS = 100mV; LT4363-2

0.76

tOFF(UV)

Undervoltage Turn Off Propagation Delay UV Steps from 1.5V to 1V

µs

tOFF(OV)

Overvoltage Turn Off Propagation Delay

FB Steps from 0V to 1.5V; OUT = 0V

0.25

µs

tOFF(OC)

Overcurrent Turn Off Propagation Delay

∆VSNS Steps from 0V to 150mV; OUT = 0V

2.5

µs

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.

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 12V, unless otherwise noted.

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