LTC2952CF datasheet(4/28 Pages) LINER

4 / 28 page

LTC2952

2952f

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

temperature range, otherwise speciﬁcations are at TA = 25°C. V1 = V2 = VS = 2.7V TO 28V unless otherwise noted. (Notes 2, 3)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Debounce Time Pins (ONT, OFFT)

IONT,OFFT

ONT/OFFT Pull-Up/Pull-Down Current

When Timer is Active

VONT, VOFFT = 0V (Pull-Up), VONT, VOFFT = 1.5V

(Pull-Down)

●

±1.6

±2.0

±2.4

µA

tDB,ON/OFF

Internal Default On-Time/Off-Time

tDB,ON: CONT = Open, Measured Time Between

⎯P⎯B Low → EN High, tDB,OFF: Measured Time

Between

⎯P⎯B Low → INT High

●

tONT,OFFT

Additional Adjustable Turn-On/Turn-

Off Time (Note 7)

CONT = 1500pF, COFFT = 1500pF

●

Accurate Comparator Input Pins (VM, PFI, M1, M2,

⎯K⎯I⎯L⎯L)

VTH_VM

VM Input Reset Threshold

Both Falling and Rising

●

0.492

0.500

0.508

VTH

PFI, M1, M2,

⎯K⎯I⎯L⎯L Input Threshold

Voltage

Falling

●

0.492

0.500

0.508

VHYS

PFI, M1, M2,

⎯K⎯I⎯L⎯L Input Hysteresis

●

515

IIN_LKG

VM, PFI, M2,

⎯K⎯I⎯L⎯L Input Current

V = 0.5V

●

±0.1

µA

IM1_SRC

M1 Input Pull-Up Current

M1 = 1V

●

–1.5

–3

–5

µA

VM1(VOC)

M1 Voltage Open Circuit

●

146

IM1_LKG

M1 Input Leak Current

M1 = 6V

●

±0.1

µA

Watch-Dog/Extend Pin (WDE)

VWDE(H,TH)

Input High Threshold Voltage

●

1.5

VWDE(L,TH)

Input Low Threshold Voltage

●

0.3

IWDE(IN,HL)

High Low Input Current (Note 8)

●

±25

µA

IWDE(IN,HZ)

High Z Input Current

VWDE = 0.7V, 1.1V

●

±10

µA

Open Drain Output Pins (G1STAT,

⎯I⎯N⎯T, ⎯R⎯S⎯T, ⎯P⎯F⎯O)

IOUT_LKG

Leakage Current

VPIN = 5V

●

±1

µA

VOL

Voltage Output Low

IPIN = 1mA

●

0.4

High Voltage Open Drain Output Pin (EN)

IEN(LKG)

EN Leakage Current

VEN = 28V, EN Sink Current Off

●

±1

µA

VEN(VOL)

EN Voltage Output Low

IEN = 3mA

●

0.4

V1 = 1.2V and/or V2 = 1.2V, IEN = 100µA

●

0.05

0.3

Voltage Monitor/Watchdog Timing

tRST

Reset Time-Out Period

●

140

200

260

tWDE

Watch-Dog Time-Out Period

●

1.1

1.6

2.1

tWDE(PW MIN)

Minimum Period Between

Consecutive Edges

●

510

µs

tVM(UV)

VM Undervoltage Detect to

⎯R⎯S⎯T

VM Less Than VTH_VM by more than 1%

150

µs

tPFI

PFI Delay to

⎯P⎯F⎯O

PFI More or Less Than VPFI_TH by more than

150

µs

LTC2952CF Datasheet(PDF) 4 Page - Linear Technology

LTC2952CF Datasheet(HTML) 4 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Datasheet Download

Link URL