36 lines
2.3 KiB
Markdown
36 lines
2.3 KiB
Markdown
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# RAA489118
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Buck-Boost Battery Charger with SMBus Interface for General 30V and USB PD EPR
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The RAA489118 is a buck-boost charger supporting 30V input and 30V battery. The RAA489118 provides charging and protection features for power tools, portable vacuums, battery-powered lawn mowers, power banks, and additional system bus regulation for notebooks. It also supports any USB-C interface platform including USB PD EPR. The advanced Renesas R3™ technology provides highly efficient light-load operation and fast transient response.
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In Charging mode, the RAA489118 accepts input power from a wide range of DC power sources (such as conventional AC/DC charger adapters, USB PD ports, and travel adapters) and safely charges battery packs with up to 7 serially connected battery cells up to 30V. The device can operate with only a battery, only an adapter, or with both connected.
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The RAA489118 supports reverse buck, reverse boost, or reverse buck-boost operation to the input port from 2-cell to 7-cell batteries.
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The RAA489118 provides programming resistor options including autonomous charging, max output voltages, adapter current limit. Additionally, it provides serial communication that enables programming of many critical parameters to deliver a customized solution.
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## Features
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- Buck-boost charger for 2 to 7-cell up to 30V batteries
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- Optional BFET
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- Input voltage range: 3.9V to 30V (no dead zone)
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- System output voltage: 2.4V to 30.8V
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- Autonomous charging option (automatic completion of charging)
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- Pass-Through mode in forward direction
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- Adapter current and battery current monitor (AMON/BMON)
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- Trickle charging of depleted battery
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- Reverse buck, boost, and buck-boost operation from battery
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- Battery Ship mode option
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- 4×4 32 Ld TQFN package compatible with the ISL9238/RAA489108 family of parts
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## Applications
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- Standalone battery charging for 2 to 7-cell batteries, including batteries for power tools, portable vacuums, battery-powered lawn mowers, drones
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- 2-cell to 7-cell tablets, Ultrabooks, notebooks, power banks, and any USB-C interface portable device requiring batteries
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**Figure 1. Full-Featured Architecture Solutions Enabled by RAA489118**
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