LTC2997

3

2997fa

ELECTRICAL CHARACTERISTICS

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; all voltages are referenced to

GND unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

l

2.5

3.3

5.5

V

UVLO

Supply Undervoltage Lockout Threshold

l

1.7

1.9

2.1

V

Average Supply Current

l

120

170

250

μA

Temperature Monitoring

Reference Voltage

LTC2997

LTC2997C

LTC2997I

LTC2997H

l

l

l

1.797

1.793

1.790

1.787

1.8

1.8

1.8

1.8

1.803

1.804

1.807

1.808

V

V

V

V

l

±1.5

mV

Remote Sense Current

–8

–192

μA

Diode Select Threshold

(Note 3)

mV

Temperature Update Interval

3.5

5

ms

η = 1.004 (Note 4)

4

mV/°K

±1.5

mV

Internal Temperature Error

LTC2997C, LTC2997I

LTC2997H

l

l

±0.5

±1.5

±2

°C

°C

Remote Temperature Error,

η = 1.004

0°C to 100°C (Notes 5, 7)

–40°C to 0°C (Notes 5, 7)

100°C to 125°C (Notes 5, 7)

±0.25

±0.25

±1

±1.5

±1.5

°C

°C

°C

Temperature Error vs Supply

l

±0.1

±1

°C/V

Series Resistance Cancellation Error

l

±0.25

±1

°C

Temperature Noise

(Note 6)

0.25

0.015

°C RMS

°C/√Hz

The

LTC2997 uses the internal diode sensor.

Note 4:

η = ideality factor of remote diode

Note 5: Remote diode temperature.

Note 6: Guaranteed by design and not subject to test.

Note 7: Guaranteed by design and test correlation.