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參數(shù)資料
| 型號： | LTC2941IDCB#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 199K |
| 代理商： | LTC2941IDCB#TRPBF |
LTC2941
5
2941fa
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): 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
completeinputbycontrolregisterbitsB[2:1].Atpower-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.
Exposed Pad (Pin 7): Do not connect.
block Diagram
REF
CLK
BIDIRECTIONAL
INTEGRATOR
SENSE–
INTERNAL
REFERENCE
GENERATOR
ACCUMULATED
CHARGE
REGISTER
PRESCALER
M
STATUS/
CONTROL
REGISTER
INTERNAL
OSCILLATOR
6
SENSE+
VSUPPLY
1
AL/CC
AL
5
GND
2
I2C/
SMBus
SCL
CC
SDA
2941 F02
3
4
Figure 2. Block Diagram of the LTC2941
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