Compact, Low-Cost 1S/2S Fuel Gauges

with Low-Battery Alert

3

Note 1:

All voltages are referenced to GND.

Note 2:

SDA, SCL = GND; QSTRT, ALRT idle.

Note 3:

Note 4:

Time to enter sleep after Sleep command is sent. Time to exit sleep on rising edge of SCL or SDA.

Note 5:

Note 6:

Note 7:

bridge the undefined region of the falling edge of SCL.

Note 8:

Filters on SDA and SCL suppress noise spikes at the input buffers and delay the sampling instant.

Note 9:

Note 10: Applies to 8-pin TDFN-EP package type only.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SCL Clock Frequency

(Note 5)

0

400

kHz

Bus Free Time Between a STOP

and START Condition

1.3

µs

Hold Time (Repeated)

START Condition

(Note 5)

0.6

µs

Low Period of SCL Clock

1.3

µs

High Period of SCL Clock

0.6

µs

Setup Time for a Repeated

START Condition

0.6

µs

Data Hold Time

(Notes 6, 7)

0

0.9

µs

Data Setup Time

(Note 6)

100

ns

Rise Time of Both SDA

and SCL Signals

20 +

300

ns

Fall Time of Both SDA

and SCL Signals

20 +

300

ns

Setup Time for STOP Condition

0.6

µs

Spike Pulse Widths Suppressed

by Input Filter

(Note 8)

0

50

ns

Capacitive Load for Each

Bus Line

(Note 9)

400

pF

SCL, SDA Input Capacitance

60

pF

ELECTRICAL CHARACTERISTICS: 2-WIRE INTERFACE

(2.5V