LTC2941CDCB datasheet(5/16 Pages) LINER

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LTC2941

2941f

PIN FUNCTIONS

SENSE+ (Pin 1): Positive Current Sense Input and Power

Supply. Connect to the load/charger side of the sense

resistor. VSENSE+ operating range is 2.7V to 5.5V.

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.

Conﬁgured either as an SMBus alert output or charge

complete input by control register bits B[2:1]. At power-up,

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 conﬁgured 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– (Pin 6):

Negative Current Sense Input. Connect

SENSE– to the positive battery terminal side of the sense

resistor. The voltage between SENSE– and SENSE+ must

remain within ±50mV in normal operation.

LTC2941CDCB Datasheet(PDF) 5 Page - Linear Technology