LTC2941CDCB-1#PBF Linear Technology, LTC2941CDCB-1#PBF Datasheet - Page 5

• Manufacturer Part Number: LTC2941CDCB-1#PBF
• Description: IC, BATTERY FUEL GAUGE LI-ION 5.5V DFN-6
• Manufacturer: Linear Technology

Specifications of LTC2941CDCB-1#PBF

• Battery Management Function: Fuel Gauge, Charge Controller
• Battery Type: Li-Ion
• Supply Voltage Range: 2.7V To 5.5V
• Battery Ic Case Style: DFN
• No. Of Pins: 6
• Rohs Compliant: Yes

pin FuncTions
SENSE
Supply. Connect to the load/charger side of the sense
resistor. V
GND (Pin 2): Device Ground. Connect directly to the nega-
tive battery terminal.
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
block Diagram
+
(Pin 1): Positive Current Sense Input and Power
SENSE +
1
6
2
operating range is 2.7V to 5.5V.
SENSE
SENSE
GND
+
–
V
SUPPLY
GENERATOR
REFERENCE
INTERNAL
REF
BIDIRECTIONAL
INTEGRATOR
Figure 2. Block Diagram of the LTC2941
OSCILLATOR
INTERNAL
CLK
PRESCALER
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
SENSE
resistor. The voltage between SENSE
remain within ±50mV in normal operation.
Exposed Pad (Pin 7): Do not connect.
M
–
–
to the positive battery terminal side of the sense
(Pin 6): Negative Current Sense Input. Connect
ACCUMULATED
REGISTER
REGISTER
CONTROL
CHARGE
STATUS/
CC
SMBus
I
2
C/
AL
AL/CC
SDA
SCL
2941 F02
–
and SENSE
LTC2941
5
3
4
+
must
2941fa