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LM3620M5X-4 数据表(PDF) 1 Page - National Semiconductor (TI) |
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LM3620M5X-4 数据表(HTML) 1 Page - National Semiconductor (TI) |
1 / 6 page LM3620 Lithium-Ion Battery Charger Controller General Description The LM3620 series of controllers are monolithic integrated circuits designed to control the charging and end-of-charge control for lithium-ion rechargeable batteries. The LM3620 is available in two versions for one or two cell charger applica- tions. Each version provides the option of selecting the ap- propriate termination voltage for either coke or graphite an- ode lithium cells. The LM3620 can operate from a wide range of DC input sources (4V to 30V). With no charger supply connected, the controller draws a quiescent current of only 10nA to minimize discharging of a connected battery pack. The LM3620 consists of an operational transconductance amplifier, a bandgap voltage reference, a NPN driver transis- tor and precision voltage setting resistors. The output of the amplifier is made available to drive an external power tran- sistor if higher drive currents are required. With a trimmed output voltage regulation of ±1.2% initial ac- curacy, the LM3620 provides a simple, precise solution for end-of-charge control of lithium-ion rechargeable cells. The LM3620 is packaged in a miniature 5-lead SOT-23 sur- face mount package for very compact designs. Features n Voltage options for charging 1 or 2 cell stacks n Adjustable output voltage for coke or graphite anodes n Precision end-of-charge voltage control n Wide input voltage range (4V to 30V) n Low off state current (<10nA) n Drive provided for external power stage n Tiny SOT-23 package Typical Application DS100841-10 June 1999 © 1999 National Semiconductor Corporation DS100841 www.national.com |
类似零件编号 - LM3620M5X-4 |
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类似说明 - LM3620M5X-4 |
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