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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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SC1766CS08 Arkusz danych(PDF) 1 Page - Semtech Corporation |
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SC1766CS08 Arkusz danych(HTML) 1 Page - Semtech Corporation |
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1 / 11 page  © 1997 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 BATTERY CHARGE CONTROLLER SC1766 Janaury 30, 1998 Note: (1) Add suffix ‘TR’ for tape and reel. FEATURES • Reliable fast charge control of NiMH/NiCd batteries • Fast charge termination by: 1 Accurate - ∆V detection level -0.25% with respect to peak value 2 Peak voltage timer (0 ∆V) • Adjustable fast charge safety timer • Protection against temperature fault • Protection against short-circuited and open batteries • Wide operation voltage range of 9V to 18V, no extra regulator needed • Large battery voltage detection range of 0.65V to 3.7V • LED drivers to indicate charge status or fault conditions • Voltage reference output • Quick and easy testing for production • Space saving 8-pin and 14-pin SO packages DESCRIPTION The SC1766 fast charge controller IC is designed for intelligent charging of NiMH or NiCd batteries without overcharging. It detects a voltage drop (- ∆V) occurring in the final stage of a fast charging cycle and correspondingly controls the charging current. Fast charge can also be cut off by a peak voltage timer (0 ∆V). The detection of - ∆V is a very reliable method to terminate fast charging for NiMH and NiCd batteries. The SC1766 uses - ∆V detection as one of the primary decisions for fast charge cut-off. The - ∆V value of the SC1766 is as small as 4mV per cell, particularly suitable for NiMH as well as NiCd batteries. The peak voltage timer is particularly useful when the voltage drop at the end of charge for some batteries, e.g. NiMH cells, is not pronounced enough for reliable detection. An adjustable safety timer (3 settings) is used as a backup termination method. Provisions are made with the SC1766 to prevent fast charge under temperature fault conditions. Two LED outputs are used to indicate the charging status. Another flash LED output can be used alone to indicate charge status. AC mode allows the battery to drive its loads while being charged. Test mode is provided to dramatically reduce production test time. TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com APPLICATIONS Battery chargers for: • Mobile phones • Notebook and laptop personal computers • Portable power tools and toys • Portable communications equipment • Portable video and stereo equipment ORDERING INFORMATION DEVICE (1) PACKAGE SC1766CS08 SO-8 SC1766CS14 SO-14 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Maximum Units Supply Voltage V CC 18 V DC Voltage Applied to any Pin 18 V Sink Current of V OUT pin, LED pin, and FLASH pin 20 mA Operating Temperature Range T A 0 to 70 °C Storage Temperature Range T STG -65 to 150 °C |
Podobny numer części - SC1766CS08 |
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Podobny opis - SC1766CS08 |
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