LTC2941 Linear Technology, LTC2941 Datasheet - Page 5

• Manufacturer Part Number: LTC2941
• Description: Battery Gas Gauge
• Manufacturer: Linear Technology

PIN FUNCTIONS
SENSE
Supply. Connect to the load/charger side of the sense
resistor. V
GND (Pin 2, Exposed Pad Pin 7): Device Ground. Connect
directly to the negative battery terminal. Exposed pad may
be left open or connected to device ground.
SCL (Pin 3): Serial Bus Clock Input.
SDA (Pin 4): Serial Bus Data Input and Output.
AL/CC (Pin 5): Alert Output or Charge Complete Input.
Confi gured either as an SMBus alert output or charge
complete input by control register bits B[2:1]. At power-up,
+
(Pin 1): Positive Current Sense Input and Power
SENSE +
operating range is 2.7V to 5.5V.
the pin defaults to alert mode conforming to the SMBus
alert response protocol. It behaves as an open-drain logic
output that pulls to GND when a value in the threshold
registers is exceeded.
When confi gured as a charge complete input, connect
to the charge complete output from the battery charger
circuit. A high level at CC sets the value of the accumulated
charge (registers C, D) to FFFFh.
SENSE
SENSE
resistor. The voltage between SENSE
remain within ±50mV in normal operation.
–
–
to the positive battery terminal side of the sense
(Pin 6): Negative Current Sense Input. Connect
–
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and SENSE
LTC2941
+
must
5
2941f