LTC1998 Просмотр технического описания (PDF) - Linear Technology

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LTC1998

2.5µA, 1% Accurate SOT-23 Comparator and Voltage Reference for Battery Monitoring

Linear Technology 

LTC1998

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

temperature range, otherwise specifications are at TA = 25°C. VGND = 0V, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

Power Supply

Supply Voltage Range-BATT

l

1.5

5.5

V

Supply Voltage Range-VLOGIC

Supply Current, VBATT = 3V,

VTH.A = 1.5V

TA = 25°C

LTC1998CS6

LTC1998IS6

l

1

l

l

VBATT

V

2.5

3.5

μA

4.2

μA

4.5

μA

Supply Current, VBATT = 5.5V,

VTH.A = 1.5V

TA = 25°C

LTC1998CS6

LTC1998IS6

3

4.3

μA

l

5.2

μA

l

5.5

μA

Monitor

Threshold Accuracy

VBATT.Th = 2.5V, Pin 3 Shorted to Ground

0.6

0.85

%

l

0.8

1

%

VBATT.Th = 3V, Pin 3 Driven by Precision Voltage Source to 1V

LTC1998C

l

LTC1998I

l

VBATT.Th = 3V, VTH.A = 1V (Note 5)

Programmed with 1% Max External Resistors

LTC1998C

l

LTC1998I

l

0.5

0.61

%

0.6

0.71

%

0.8

1

%

0.9

1.1

%

VBATT.Th = 3.25V, Pin 3 Driven by Precision Voltage Source to 1.5V

LTC1998C

l

LTC1998I

l

0.6

0.65

%

0.7

0.85

%

VBATT.Th = 3.25V, VTH.A = 1.5V (Note 5)

Programmed with 1% Max External Resistors

LTC1998C

LTC1998I

Hysteresis Accuracy

VHYST ≤ 250mV

250mV ≤ VHYST ≤ 750mV

Allowable Hysteresis Range (Note 2)

Propagation Delay

COUT = 100pF

Overdrive = 10mV

Overdrive = 100mV

l

l

l

–5

l

l

10

0.9

1.1

%

1

1.3

%

5

mV

±5

mV

750

mV

350

μs

150

μs

Threshold Adjust Pin Leakage, ITH.A

Hysteresis Adjust Pin Leakage, IH.A

Output

BATTLO High Voltage

BATTLO Low Voltage

BATTLO Low Voltage

VTH.A ≤ 1.5V

VH.A ≤ 1.5V

IOUT = –1mA, VLOGIC ≥ 1.5V

IOUT = 1mA, VBATT ≥ 2V

IOUT = 0.25mA, VBATT = 1V

l

0.01

1

nA

l

0.01

1

nA

l VLOGIC – 0.3

l

V

0.2

V

l

0.3

V

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: Maximum allowable hysteresis depends on desired trip voltages.

See application notes for details.

Note 3: LTC1998C and LTC1998I are guaranteed functional over the

operating temperature range of –40°C to 85°C.

Note 4: The LTC1998C is guaranteed to meet specified performance from

0°C to 70°C. The LTC1998C is designed, characterized and expected to

meet specified performance from –40°C to 85°C but is not tested or QA

sampled at these temperatures. The LTC1998I is guaranteed to meet

specified performance from –40°C to 85°C.

Note 5: This parameter is not 100% tested.

1998fa

3

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