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参数资料
| 型号： | LTC1325CN |
| 厂商： | Linear Technology |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MANAGMNT SYSTEM 18DIP |
| 标准包装： | 20 |
| 功能： | 充电管理 |
| 电池化学： | 铅酸，锂离子，镍镉，镍氢 |
| 电源电压： | 4.5 V ~ 16 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 18-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 18-DIP |
| 包装： | 管件 |
LTC1325
TI I G DIAGRA
MSB-FIRST DATA (MSBF = 1)
CS
CLK
D IN
START
MSBF
D OUT
HI-Z
NULL
D9
BATP
D1 D0
FS
HI-Z
CS
CLK
D IN
MSB-FIRST DATA (MSBF = 0)
START
COMMAND WORD
VR1
ADC DATA
STATUS WORD
D OUT
HI-Z
NULL
D9
D1 D0 D1
BATP
D9
FS
HI-Z
COMMAND WORD
ADC DATA
STATUS WORD
LTC1325 ? TD
NOTE: THE TIMING DIAGRAM SHOWS TWO POSSIBLE COMMAND WORDS.
REFER TO FUNCTIONAL DESCRIPTION FOR INFORMATION ON HOW TO
CONSTRUCT THE COMMAND WORD
FU N CTIO N AL DESCRIPTIO
GENERAL DESCRIPTION
During normal operation, a command word is shifted into
the chip via the serial interface, then an ADC measurement
is made and the 10-bit reading and chip status word are
shifted out. The command word configures the LTC1325
and forces it into one of five modes: power shutdown, idle,
discharge, charge or gas gauge mode.
In the power shutdown mode, the analog section is turned
off and the supply current drops to 30 μ A. The voltage
regulator, which provides power to the internal analog
circuitry and external bias networks, is shut down. The
voltage divider across the battery is disconnected and only
the voltage regulator for the serial interface logic is left on.
During the idle mode, the chip is fully powered but the
discharge, charge, and gas gauge circuits are off. The chip
may be placed in the idle mode momentarily while charg-
ing the battery, allowing an ADC measurement to be made
without any switching noise from the PWM current source
affecting the accuracy of the reading. The mode command
bits are picked off as they appear at D IN , allowing the
During the discharge mode, the battery is discharged by
an external transistor and series resistor. The battery is
monitored for fault conditions.
In the charge mode, the μ P monitors the battery’s voltage,
temperature and ambient temperature via the 10-bit ADC.
Termination methods such as – ? V BAT , ? V BAT / ? Time,
? T BAT , ? T BAT / ? Time, ? (T BAT – T A ), maximum tempera-
ture, maximum voltage and maximum charge time may be
accurately implemented in software. The LTC1325 also
monitors the battery for fault conditions.
In the gas gauge mode, the average voltage across the
sense resistor can be measured to determine the average
battery load current. The sense voltage is filtered by an RC
circuit, multiplied by an inverting gain of four, then con-
verted by the ADC. The μ P can then accumulate the ADC
measurements and do a time average to determine the
total charge leaving the battery. The RC circuit consists of
an internal 1k resistor R F and an external capacitor C F
connected to the Filter pin.
charging loop to turn off and settle while the remainder of
the command word is being shifted in.
9
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1325CN#PBF | 功能描述:IC BATTERY MANAGMNT SYSTEM 18DIP 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) |
| LTC1325CSW | 功能描述:IC BATTERY MANAGMNT SYSTEM18SOIC RoHS:否 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) |
| LTC1325CSW#PBF | 功能描述:IC BATTERY MANAGMNT SYSTEM18SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:2,000 系列:Impedance Track™ 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:2.4 V ~ 2.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:带卷 (TR) 产品目录页面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名称:296-21665-2 |
| LTC1325CSW#TR | 功能描述:IC SYSTEM BATT MANAGEMENT 18SOIC RoHS:否 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) |
| LTC1325CSW#TRPBF | 功能描述:IC BATTERY MANAGMNT SYSTEM18SOIC 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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