参数资料
型号: LTC2941IDCB#TRMPBF
厂商: Linear Technology
文件页数: 5/16页
文件大小: 0K
描述: IC FUEL/GAS GAUGE LI-ION 6DFN
标准包装: 500
功能: 燃料,电量检测计/监控器
电池化学: 锂离子(Li-Ion)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-WFDFN 裸露焊盘
供应商设备封装: 6-DFN-EP(2x3)
包装: 带卷 (TR)
配用: DC1496A-A-ND - BOARD EVAL LTC2941
LTC2941
PIN FUNCTIONS
SENSE + (Pin 1): Positive Current Sense Input and Power
Supply. Connect to the load/charger side of the sense
resistor. V SENSE+ operating range is 2.7V to 5.5V.
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
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.
Exposed Pad (Pin 7): Do not connect.
1
6
2
SENSE +
SENSE –
GND
V SUPPLY
BIDIRECTIONAL
INTEGRATOR
REF CLK
INTERNAL
INTERNAL
REFERENCE
OSCILLATOR
GENERATOR
PRESCALER
M
ACCUMULATED
CHARGE
REGISTER
STATUS/
CONTROL
REGISTER
CC
I 2 C/
SMBus
AL
AL /CC
SCL
SDA
5
3
4
2941 F02
Figure 2. Block Diagram of the LTC2941
2941fa
5
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