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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP78073 датащи(PDF) 1 Page - Lowpower Semiconductor inc |
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LP78073 датащи(HTML) 1 Page - Lowpower Semiconductor inc |
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1 / 9 page  Preliminary Datasheet LP78073 LP78073 – 00 Version 1.0 Feb.-2014 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 1 of 9 700mA Charge + 1A Synchronous Boost PMIC General Description The LP78073 is a PMIC，which has 1ch Charger and 1ch Synchronous Boost Converter with ESOP-8 package. Its charger is a complete constant-current constant voltage linear charger for single cell lithium-ion batteries. Furthermore, the LP78073 is specifically designed to work within USB power specifications. 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 is fixed to 700mA. The charger automatically terminates the charge cycle when the charge current drops to 1/10th the ISET rammed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the LP78073 automatically enters a low current state, dropping the battery drain current to less than 180µA. Other features include charge current monitor, short current protection, under voltage lockout, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage. Boost converter is Synchronous current mode boost DC-DC converter. Its PWM circuitry with built-in 2A Current power MOSFET makes this converter highly power efficiently. The non-inverting input and its error amplifier is connected to an internal 1000mV precision reference voltage. Order Information LP78073 □ □ □ F: Pb-Free Package Type SP: ESOP-8 Features Charger: Fixed Charge Current 700mA No MOSFET, Sense Resistor or Blocking Diode Required Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating Boost: 1.0A Output Current Synchronous Boost Converter at VIN=3V 900KHz fixed frequency switching High Switch On Current: 2A Low RDS(ON) Integrated Power Mosfet Efficiency is 96% Built-in OVP, OTP, OCP, Soft-Star Low Standby Current Less Than 180uA Few External Component Reduce Cost Consumption Available in ESOP-8 Package RoHS Compliant and 100% Lead (Pb)-Free Marking Information Applications MID/Pad Power Bank Smart Phone Bluetooth Applications Device Marking Package Shipping LP78073SPF SP: ESOP-8 3K/REEL |
Аналогичный номер детали - LP78073 |
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Аналогичное описание - LP78073 |
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