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LA5621M Arkusz danych(PDF) 1 Page - Sanyo Semicon Device |
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LA5621M Arkusz danych(HTML) 1 Page - Sanyo Semicon Device |
1 / 6 page Ordering number :EN5640A 31000RM (OT) No. 5640-1/6 Overview The LA5621M and LA5621V are external charge control ICs for lithium-ion batteries. These ICs are ideally suited for on/off control of external power MOSFETs in systems that incorporate a charging circuit in the set. They detect the charge and discharge status, output it to the set control microcontroller, which then outputs a signal to switch external power MOSFETS either on or off. Moreover, these ICs have a built-in function that detects discharge (countercurrent) from lithium-ion batteries within sets to external lithium-ion batteries in an AC adapter/charger, etc. and switches external power MOSFETs off. Application • Charge control of 1- or 2-cell lithium-ion batteries of video cameras, digital still cameras, cellular telephones, etc., used in combination with a microcontroller. Functions • Charge/discharge: In charge/discharge mode, switch external power MOSFETs on to charge the battery or discharge it to set load. • Charge detection: Detect the charge status of lithium-ion batteries with comparator. • Charge completion control: When charging of the lithium-ion battery is completed, the comparator is activated and the external power MOSFETs are switched off to stop charging. • Countercurrent detection and control: In systems that support charging of both the set of the video camera, etc., and the AC adapter/charger, when spare batteries are charged on the AC adapter/charger side, if the battery voltage on the set side becomes high when the set is connected to the AC adapter/charger, current flows out to the battery on the AC adapter/charger side. These ICs feature a function that prevents this from happening. • Charge prevention: A specified voltage is applied to the CHARGEINH pin to stop charging. Features • The combination of a microcontroller and external power MOSFETs enables easy charge/discharge control of lithium-ion batteries. • Small power dissipation makes these ICs suitable for sets that require long time operation • Use of compact package makes these ICs suitable for compact sets. • Large power supply operation range supports both 1-cell and 2-cell lithium-ion batteries. LA5621M, 5621V SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN Lithium-Ion Battery Charge Control IC Monolithic linear IC Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. |
Podobny numer części - LA5621M |
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Podobny opis - LA5621M |
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