ISL9520HRTZ-T
ISL9520HRTZ-T Datasheet
Home > Products > Power Management > Battery Management > Multiple Cell Battery Chargers > ISL9520
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ISL9520HRTZ-T |
ISL9520HRTZ-T (pdf) |
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ISL9520HRTZ |
ISL9520HRTZ |
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| Home > Products > Power Management > Battery Management > Multiple Cell Battery Chargers > ISL9520 ISL9520 Narrow VDC Regulator/Charger with SMBus Interface KEY FEATURES • system voltage accuracy -10°C to +100°C • ±3% accurate input current limit -10°C to +100°C • ±3% accurate battery charge current limit • Variable switching frequency at light load conditions for higher efficiency • Fixed frequency operation at higher loads • Fixed frequency mode can be forced by an external pin • Trickle charge system for deeply discharged batteries • Automatic trickle charge current 256mA • Holds minimum voltage to system • SMBus 2-wire serial interface • Default system voltage values for 2-cell, 3-cell or 4-cell operation selected by an external pin • Adapter in-rush FET control • Adapter isolation FET control • Battery short circuit protection • Fast system-load transient response • Monitor outputs • Adapter and battery discharge current • AC-adapter present indicator • 11-bit max system voltage setting • 7-bit min system voltage setting • 6-bit charge current setting • Over 8A battery charger current • 6-bit adapter current setting • Over 8A adapter current • +9V to +22V adapter voltage range • VOUT from 2.5V to 19V in 16mV increments • High efficiency at loads < 0.5W for Energy Star 2013 and ErP lot 6 • 250mW from adapter with 170mW to the load • Turbo mode support • Pulse-by-pulse response to limit adapter current • BGATE on in Turbo mode • Pb-Free RoHS compliant TYPICAL DIAGRAM Request Full Data Sheet ENLARGE + The ISL9520 is a highly integrated Narrow VDC system voltage regulator and battery charger controller. Operating parameters are programmable over the System Management Bus SMBus . The ISL9520 is designed for applications where the system power source is either the battery pack or the output of the regulator/charger. This makes the max voltage to the system equal to the max battery voltage instead of the max adapter voltage. The ISL9520 also includes a patented system to control trickle charging deeply discharged batteries while maintaining system voltage at a user defined minimum. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation and variable switching frequency for enhanced light load efficiency and AC-adapter boosting prevention. The ISL9520 can charge two, three, or four series connected Lithium-ion cells, at up to 8A charge current. Default settings for 2-, 3- or 4 -cell operation at power-up are selected by an external pin. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy. The ISL9520 provides an open drain digital output that indicates the presence of the AC-adapter. The ISL9520 also provides an analog output that indicates the battery discharge current and an output that indicates the adapter current. APPLICATIONS • Ultrabooks • Notebook computers • Tablet PCs • Portable equipment with rechargeable batteries Follow Us Legal | Privacy | Investor Relations | Feedback | Site Map Intersil Americas LLC 4/24/2013 |
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