参数资料
型号: DC1496A-B
厂商: Linear Technology
文件页数: 6/18页
文件大小: 0K
描述: BOARD EVAL LTC2942
设计资源: DC1496A Design Files
DC1496A Schematic
标准包装: 1
系列: QuikEval™
主要目的: 电源管理,电池监控器
嵌入式:
已用 IC / 零件: LTC2942
主要属性: I²C、SMBus 接口
次要属性: LED 状态指示器
已供物品:
LTC2942
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
BLOCK DIAGRAM
alert response protocol. It behaves as an open-drain logic
output that pulls to GND when any threshold register value
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. SENSE – is also
the input for the ADC in voltage measurement mode.
Exposed Pad (Pin 7): Do Not Connect.
1
SENSE +
V SUPPLY
LTC2942
COULOMB COUNTER
REF
CLK
ACCUMULATED
CHARGE
REGISTER
CC
AL
AL /CC
5
TEMPERATURE
SENSOR
REFERENCE
GENERATOR
REF +
OSCILLATOR
CLK
I 2 C/
SMBus
SCL
SDA
3
4
6
SENSE –
MUX
IN
REF –
ADC
DATA AND
CONTROL
REGISTERS
2
GND
2942 BD
2942fa
6
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