LTC4214-2CMS datasheet(3/32 Pages) LINER

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LTC4214-1/LTC4214-2

421412f

ISENSE

SENSE Pin Input Current

VSENSE = 50mV

–15

–30

µA

IINP

UV, OV Pin Input Current

UV = OV = 2.5V

±0.1

±1

µA

VTMRH

TIMER Pin Voltage High Threshold

VTMRL

TIMER Pin Voltage Low Threshold

1.7

ITMR

TIMER Pin Current

Timer On (Initial Cycle/Latchoff/

–5

µA

Shutdown Cooling, Sourcing), VTMR = 2.2V

Timer Off (Initial Cycle, Sinking), VTMR = 2.2V

Timer On (Circuit Breaker, Sourcing,

–40

µA

IDRN = 0µA), VTMR = 2.2V

Timer On (Circuit Breaker, Sourcing,

–200

µA

IDRN = 20µA), VTMR = 2.2V

Timer Off (Circuit Breaker/

µA

Shutdown Cooling, Sinking), VTMR = 2.2V

∆ITMRACC [(ITMR at IDRN = 20µA) – (ITMR at IDRN = 0µA)] Timer On (Circuit Breaker with IDRN = 20µA)

µA/µA

∆IDRN

µA

VDRNL

DRAIN Pin Voltage Low Threshold

For PWRGD Status

1.109

1.232

1.355

IDRNL

DRAIN Leakage Current

VDRAIN = 2.5V

±0.1

±1

µA

VDRNCL

DRAIN Pin Clamp Voltage

IDRN = 20µA

3.5

4.2

VPGL

PWRGD Output Low Voltage

IPG = 1.6mA

0.2

0.4

IPG = 5mA

1.1

IPGH

PWRGD Pull-Up Current

VPWRGD = 0V (Sourcing)

–30

–50

–70

µA

tSS

SS Default Ramp Period

SS Pin Floating, VSS Ramps from 0.2V to 1.4V

130

µs

tPLLUG

UV Low to Gate Low

0.4

µs

tPHLOG

OV High to Gate Low

0.4

µs

ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, UV = OV = 2.5V unless otherwise noted. (Note 2)

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 VEE unless otherwise

specified.

TYPICAL PERFOR A CE CHARACTERISTICS

TEMPERATURE (

°C)

800

900

1000

4214 G01

700

600

400

500

1200

1100

–55

105

–15

–35

125

545

VIN = 12V

VIN (V)

0.8

1.0

1.2

4214 G02

0.6

0.4

0.2

1.6

1.4

018

220

610

TA = –40°C

TA = 25°C

TA = 85°C

TA = 125°C

TEMPERATURE (

°C)

–55

5.8

5.6

5.4

5.2

4.8

4.6

4.4

4.2

–15

125

4214 G03

–35

85 105

IIN vs Temperature

IIN vs VIN

Undervoltage Lockout

VLKO vs Temperature

All voltages are referenced to VEE Unless

otherwise specified.

LTC4214-2CMS Datasheet(PDF) 3 Page - Linear Technology

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