LTC2953

3

2953f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

EN/⎯E⎯N Leakage Current

●

●

±0.1

±1

μA

μA

EN/⎯E⎯N Voltage Output Low

●

0.11

0.4

V

EN/⎯E⎯N Lock Out Time (Note 3)

Enable Released

→ Enable Asserted

●

52

64

82

ms

On/Off Timing Pins (⎯P⎯B, UVLO, PDT, ⎯I⎯N⎯T)

Turn On Debounce Time

⎯P⎯B Falling → Enable Asserted

●

26

32

41

ms

PDT Pull Up Current

●

–2.4

–3

–3.6

μA

PDT Pull Down Current

●

2.433.6

μA

Turn Off Interrupt Debounce Time

⎯P⎯B, UVLO Falling → ⎯I⎯N⎯T Falling

●

26

32

41

ms

Internal ⎯P⎯B Power Down Delay

Time (Note 4)

⎯P⎯B, UVLO Falling → Enable Released

PDT Open

●

52

64

82

ms

Additional Adjustable ⎯P⎯B Power

Down Delay Time

●

9

11.5

13.5

ms

Minimum ⎯I⎯N⎯T Pulse Width

⎯I⎯N⎯T Asserted → ⎯I⎯N⎯T Released

●

26

32

41

ms

Maximum ⎯I⎯N⎯T Pulse Width

●

35

43.5

54.5

ms

μP Handshake Pins (⎯K⎯I⎯L⎯L, ⎯I⎯N⎯T)

⎯K⎯I⎯L⎯L Input Threshold Voltage

⎯K⎯I⎯L⎯L Falling

●

0.57

0.6

0.63

V

⎯K⎯I⎯L⎯L Input Threshold Hysteresis

●

10

30

50

mV

⎯K⎯I⎯L⎯L Minimum Pulse Width

●

30

μs

⎯K⎯I⎯L⎯L Propagation Delay

⎯K⎯I⎯L⎯L Falling → Enable Released

●

30

μs

⎯K⎯I⎯L⎯L Turn On Blanking (Note 5)

⎯K⎯I⎯L⎯L = Low, Enable Asserted → Enable Released

●

400

512

650

ms

⎯K⎯I⎯L⎯L Leakage Current

●

±0.1

μA

⎯I⎯N⎯T Leakage Current

●

±0.1

μA

⎯I⎯N⎯T Output Voltage Low

●

0.11

0.4

V

Power Fail and Voltage Monitor Pins (⎯P⎯F⎯I, ⎯P⎯F⎯O, UVLO, VM, ⎯R⎯S⎯T)

⎯P⎯F⎯I Input Threshold Voltage

Falling

●

492

500

508

mV

UVLO Input Threshold Voltage

Falling

●

492

500

508

mV

Adjustable Reset Threshold

Falling/Rising

●

492

500

508

mV

⎯P⎯F⎯I-UVLO Threshold Mismatch

●

–5

0

5

mV

⎯P⎯F⎯I Input Hysteresis

●

2

4

10

mV

UVLO Input Hysteresis

●

30

50

70

mV

⎯P⎯F⎯O Output Voltage Low

●

0.11

0.4

V

⎯R⎯S⎯T Output Voltage Low

I = 3mA

●

0.11

0.4

V