搜索结果：LP40

LACING PANEL 40U XME/XMER

LEGENDPLATE 30 MM BLANK ALUMINUM

The LP4020 is a 2A Li-ion battery charger. It utilizes a 600KHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation and internal MOSFET allow a physically small charger that can be embedded in a wide range of handheld applications. The LP4020 includes complete charge termination circuitry, automatic recharge and ±1% 4.2V float voltage. Additional features include shorted cell detection; temperature qualified charging and overvoltage protection. The LP4020 is available in a low profile SOT23-6/ESOP8 package.

The LP4023 is a standalone 1-cell switching battery charger providing up to 2A charge current to the battery from 4.1V to 6.2V input voltage. The charge current is programmable by a resistor connected from lSET to GND. The charge can be enabled and disabled from lSET pin. The LP4023 operates at 1.2MHz switching frequency allowing a small-size 1uH inductor for 2A fast charging. The LPS patent-protected integrated current sensing and control technique eliminates external sensing resistor and allows high charge efficiency, low BOM cost and very small footprint.

The LP4032 is a standalone 1-cell switching battery charger providing up to 2A charge current to the battery from 4.1V to 6.2V input voltage. The charge current is programmable by a resistor connected from ISET to GND and the charge voltage is programmable by a resistor connected from VSET to GND. The charge can be enabled and disabled from ISET pin. The LP4032 operates at 1.2MHz switching frequency allowing a small-size 1uH inductor for 2A fast charging. The patent-protected integrated current sensing technique eliminates external sensing resistor allowing very high charge efficiency, low BOM cost and very small footprint (20mmx10mm). The precharge, fastcharge and termination current accuracy is competitive with external-resistor-based current sensing architecture. LP4032 is available in DFN3x3-10 package.

The LP4033 is a fully integrated switch mode charger solution with power path management targeting singlecell Li-ion battery powered portable applications. A low on-resistance BUS-FET is integrated to manage the input power from the VIN pin. A bidirectional buck or boost converter is integrated to manage charging and discharging of the battery. The buck charger supports up to 3-A charging current with up to 95% efficiency. The ultra-low quiescent current boost converter consumes less than 2-μA and supports up to 1.5-A output current. Two independent load switches provide power from the PMID pin to the LDSW1 pin and LDSW2 pin with high accuracy current limit. An NTC circuit is offered to manage the temperature range that charging or discharging is allowed. A LDO pin delivers power to the system that contains an MCU typically. The LP4033 offers power path management that allows the system to be powered up with a fully-discharged battery. It can dynamically manage the power from the VIN input and the battery to meet the system loading needs. An I2C interface enables programming various parameters ofcharging, discharging, and multiple protection functions. An interrupt output (IRQb) sends a signal to the MCU when an interrupt event happens so the MCU can take actions accordingly. Multiple features are offered for the safe operation of the system, including input voltage OVP (over voltage protection), UVLO (under voltage lockout), OTP (over temperature protection), SCP (short circuit protection), etc.When powered by a battery, LP4033 can operate with only 5-µA current. The whole System is in a 24-pin 4 X 4 QFN package.

The LP4034 is a standalone 1-cell swilching baltery charger providing up to 3.5A charge current lo the battery from 4.1v lo 6.2V input voltage. The charge current is programmable by a resistor connected from ISET to GND and the charge voltage is programmable by a resislor connected from VSET to GND. The charge can be enabled and disabled from ISET pin. The LP4034 operates at 1.2MHz switching frequency allowing a small-size 1uHinductor for 3.5A fast charging. The current patent-protectedinlegrated sensing technique eliminales exlemal sensing resislor allowing very high charge efficiency, low BOM cost and small footprint. The precharge, fasicharge and termination current accuracy is competitive compared external-resistor-bas ed curent sensing architecture. LP4034 is available in DFN3x3-10 package.

LP4040 is a complete constant-current/ constant voltage linear charger for single cell lithium-ion battery. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor.The LP4040 automatically terminates the charge cycle when the charge current drops below the programmed termination threshold after the final float voltage is reached. When the input supply is removed, the device automatically enters a low current state, dropping the battery drain current to less than 1μA. Other features include charge current monitor, under voltage lockout, automatic recharge, status pins to indicate charging state and the presence of an input voltage and an NTC thermistor input used to monitor battery temperature.

LP4052是一颗为单节锂电池充电的具有恒压恒流过程的线性充电芯片。 其SOT23-5和极少的外围器件个数的特性使得LP4052成为移动便携式应用的理想选择。此外，该芯片也是专门为USB充电应用而研发的，拥有低电量电池预充功能。内部MOSFET的优化设计可以不需要外部电流检测电阻和反向阻断二极管。芯片的热保护模块能够在大电流充电和高环境温度情况中实时保护芯片不会因过热烧坏。其充满电电压固定在4.2V，内部设置固定400mA充电电流。当充电电流接近芯片的浮动电压，即充电电流达到1/10设定电流后芯片自动断开充电，完成充电过程。当连接的充电器或者电脑USB断开时，芯片自动进入微电流状态，此时电池流入芯片的漏电流小于1uA。LP4052的其他特性包括充电状态精确检测、低压关断、自动重新充电和指示灯指示充电状态或充电器连接正常。