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参数资料
| 型号： | LTC4155EUFD#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC28 |
| 封装： | 5 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WXXX-X, QFN-28 |
| 文件页数： | 6/52页 |
| 文件大小： | 473K |
| 代理商： | LTC4155EUFD#TRPBF |
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LTC4155
14
4155f
PIN FUNCTIONS
PROG (Pin 18): Charge Current Program and Monitor Pin.
A resistor from PROG to GND programs the maximum
batterychargerate.TheLTC4155featuresI2Cprogramma-
bilityenablingsoftwareselectionoffifteenchargecurrents
that are inversely proportional to a single user-supplied
programming resistor.
CHGSNS (Pins 19, 20): Battery Charger Current Sense
Pin. An internal current sense resistor between VOUT
and CHGSNS monitors battery charge current. CHGSNS
shouldbeconnectedtothesourceofanexternalP-channel
MOSFET transistor.
VOUT (Pins 21, 22): Output Voltage of the Switching
PowerPath Controller and Input Voltage of the Battery
Charging System. The majority of the portable product
should be powered from VOUT. The LTC4155 will partition
the available power between the external load on VOUT
and the battery charger. Priority is given to the external
load and any extra power is used to charge the battery. An
ideal diode control function from BATSNS to VOUTensures
that VOUT is powered even if the load exceeds the allotted
power from VBUS or if the VBUS power source is removed.
VOUT should be bypassed with a low impedance multilayer
ceramic capacitor of at least 22F.
VBUS (Pins 23, 24, 25): Input Voltage for the PowerPath
Step-Down Switching Regulator and Output Voltage for
the USB On-The-Go Step-Up Switching Regulator. VBUS
may be connected to the USB port of a computer or a DC
output wall adapter or to one or both optional overvolt-
age protection/multiplexer compound transistors. VBUS
should be bypassed with a low impedance multilayer
ceramic capacitor.
SW (Pins 26, 27): Switching Regulator Power Transmis-
sion Pin. The SW pin delivers power from VBUS to VOUT
via the step-down switching regulator and from VOUT to
VBUS via the step-up switching regulator. A 1μH inductor
should be connected from SW to VOUT. See the Applica-
tionsInformationsectionforadiscussionofcurrentrating.
SCL (Pin 28): Clock Input for the I2C Serial Port. The
I2C input levels are scaled with respect to DVCC for I2C
compliance.
GND(ExposedPadPin29):Exposedpadmustbesoldered
to the PCB to provide a low electrical and thermal imped-
ance connection to the printed circuit board’s ground. A
continuousgroundplaneonthesecondlayerofamultilayer
printed circuit board is strongly recommended.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4155IUFD#PBF | 功能描述:IC I2C POWER MANAGER DUAL 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 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) |
| LTC4155IUFD#TRPBF | 功能描述:IC I2C POWER MANAGER DUAL 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:PowerPath™ 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) |
| LTC4156EUFD#PBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN 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 |
| LTC4156EUFD#TRPBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN 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) |
| LTC4156IUFD#PBF | 功能描述:IC POWER LI-ION CHARGER 28-QFN 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 |
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