Li+ Battery Charger and Low Dropout Linear Regulator Combo CXLB7373 combines a constant-current/constant-voltage linear single cell Li+ battery charger with a low dropout linear regulator. Both charg

   产品概述 返回TOPsre嘉泰姆

The CXLB7373 combines a constant-current/constant-voltage linear single cell Li+ battery charger with a low dropout linear regulator. Both charger and linear regulators can work independently. The small DFN-10 package and low external component count make the CXLB7373 ideally suit to portable applications. The charger of CXLB7373 provides 0.7A charge current with thermal regulation protection to optimize the board design for compact size and typical thermal conditions. When the junction temperature reaches the thermal regulation threshold, the charger does not shut down but simply reduces the charge current. The charge current can be programmed by connecting an external resistor from the ISET pin to the GND. Using an external MOSFET to disconnect the resistor from the ground shuts down the charger, and reduces the input current down to 25mA. The CXLB7373 also has the STAT pin to indicate charge status. The LDO regulator of CXLB7373 can deliver up to 150mA current and dropout voltage is only 200mV. The 4mA low quiescent current makes it ideally suit to battery-power systems. The LDO regulator also has built-in current limit and thermal shutdown protection

   产品特点 返回TOPsre嘉泰姆

· Programmable Charge Current Up to 700mA sre嘉泰姆

· Charge Status Output Pin sre嘉泰姆

· Soft-Start Limits Inrush Current sre嘉泰姆

· 4.2V Charge Termination Voltage with ±1% Accuracy sre嘉泰姆

· 45mA Pre-charge Current (RSET =2k) sre嘉泰姆

· Thermal Regulation of Charge Current Simplifies Board Design sre嘉泰姆

· Charger Enable/Disable Control sre嘉泰姆

· Ultra Low Regulator Quiescent Current: 4mA sre嘉泰姆

· Fixed LDO Regulator Output Voltage: 3.3V sre嘉泰姆

· Low Regulator Dropout Voltage: 200mV@150mA sre嘉泰姆

· LDO Regulator Current Limit Protection sre嘉泰姆

· LDO Regulator Short Circuit Current Limit sre嘉泰姆

· LDO Regulator Thermal Protection sre嘉泰姆

· Small 3mmx3mm DFN 10-Pin (DFN-10) Package sre嘉泰姆

· Lead Free and Green Devices Available (RoHS Compliant)sre嘉泰姆

   应用范围 返回TOPsre嘉泰姆

· PDAs sre嘉泰姆

· MP3 Players sre嘉泰姆

· Cell Phones sre嘉泰姆

· Wireless Appliancessre嘉泰姆

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