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参数资料
| 型号： | LTC6802IG-1#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/38页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR BATT STACK MC 44-SSOP |
| 标准包装： | 2,000 |
| 功能： | 电池监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4 V ~ 50 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-FSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 44-SSOP |
| 包装： | 带卷 (TR) |
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LTC6802-1
PIN FUNCTIONS
CSBO (Pin 1): Chip Select Output (Active Low). CSBO is
a buffered version of the chip select input, CSBI. CSBO
drives the next IC in the daisy chain. See Serial Port in the
Applications Information section.
SDOI (Pin 2): Serial Data I/O Pin. SDOI transfers data to
and from the next IC in the daisy chain. See Serial Port in
the Applications Information section.
SCKO (Pin 3): Serial Clock Output. SCKO is a buffered ver-
sion of SCKI. SCKO drives the next IC in the daisy chain.
See Serial Port in the Applications Information section.
V + (Pin 4): Tie pin 4 to the most positive potential in the
battery stack. Typically V + is the same potential as C12.
C12, C11, C10, C9, C8, C7, C6, C5, C4, C3, C2, C1 (Pins
5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27): C1 through
C12 are the inputs for monitoring battery cell voltages.
Up to 12 cells can be monitored. The lowest potential is
tied to pin V – . The next lowest potential is tied to C1 and
so forth. See the figures in the Applications Information
section for more details on connecting batteries to the
LTC6802-1.
The LTC6802-1 can monitor a series connection of up
to 12 cells. Each cell in a series connection must have
a common mode voltage that is greater than or equal to
the cells below it.
S12, S11, S10, S9, S8, S7, S6, S5, S4, S3, S2, S1 (Pins
6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28): S1 though
S12 pins are used to balance battery cells. If one cell in a
series becomes over charged, an S output can be used to
discharge the cell. Each S output has an internal N-channel
MOSFET for discharging. See the Block Diagram. The NMOS
has a maximum on resistance of 20Ω. An external resistor
should be connected in series with the NMOS to dissipate
heat outside of the LTC6802-1 package. When using the
internal MOSFETs to discharge cells, the die temperature
should be monitored. See Power Dissipation and Thermal
Shutdown in the Applications Information section.
The S pins also feature an internal 10k pull-up resistor. This
allows the S pins to be used to drive the gates of external
V – (Pin 29): Connect V – to the most negative potential in
the series of cells.
NC (Pin 30): Pin 30 is internally connected to V – through
10Ω. Pin 30 can be left unconnected or connected to pin
29 on the PCB.
V TEMP1 , V TEMP2 (Pins 31, 32): Temperature Sensor Inputs.
The ADC measures the voltage on V TEMPx with respect to
V – and stores the result in the TMP registers. The ADC
measurements are relative to the V REF pin voltage. Therefore
a simple thermistor and resistor combination connected
to the V REF pin can be used to monitor temperature. The
V TEMP inputs can also be general purpose ADC inputs.
V REF (Pin 33): 3.075V Voltage Reference Output. This pin
should be bypassed with a 1μF capacitor. The V REF pin can
drive a 100k resistive load connected to V – . Larger loads
should be buffered with an LT6003 op amp, or similar
device.
V REG (Pin 34): Linear Voltage Regulator Output. This pin
should be bypassed with a 1μF capacitor. The V REG pin is
capable of supplying up to 4mA to an external load. The
V REG pin does not sink current.
TOS (Pin 35): Top of Stack Input. Tie TOS to V REG when
the LTC6802-1 is the top device in a daisy chain. Tie TOS
to V – when the LTC6802-1 is any other device in a daisy
chain. When TOS is tied to V REG , the LTC6802-1 ignores
the SDOI input. When TOS is tied to V – , the LTC6802-1
expects data to be passed to and from the SDOI pin.
MMB (Pin 36): Monitor Mode (Active Low) Input. When
MMB is low (same potential as V – ), the LTC6802-1 goes
into monitor mode. See Modes of Operation in the Ap-
plications Information section.
WDTB (Pin 37): Watchdog Timer Output (Active Low). If
there is no activity on the SCKI pin for 2.5 seconds, the
WDTB output is asserted. The WDTB pin is an open drain
NMOS output. When asserted it pulls the output down
to V – and resets the configuration register to its default
state. See Watchdog Timer Circuit in the Applications
Information section.
P-channel MOSFETs for higher discharge capability.
68021fa
8
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相关代理商/技术参数 |
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| LTC6802IG-2 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Multicell Addressable Battery Stack Monitor |
| LTC6802IG-2#3ZZPBF | 制造商:Linear Technology 功能描述: |
| LTC6802IG-2#PBF | 功能描述:IC MONITOR BATT STACK 44-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 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:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC6802IG-2#PBF | 制造商:Linear Technology 功能描述:IC BATTERY MONITOR LI-ION 50V SSOP44 |
| LTC6802IG-2#TRPBF | 功能描述:IC MONITOR BATT STACK 44-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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