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+
+
+# RAA489118
+
+Buck-Boost Battery Charger with SMBus Interface for General 30V and USB PD EPR
+
+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.
+
+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.
+
+The RAA489118 supports reverse buck, reverse boost, or reverse buck-boost operation to the input port from 2-cell to 7-cell batteries.
+
+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.
+
+## Features
+
+- Buck-boost charger for 2 to 7-cell up to 30V batteries
+- Optional BFET
+- Input voltage range: 3.9V to 30V (no dead zone)
+- System output voltage: 2.4V to 30.8V
+- Autonomous charging option (automatic completion of charging)
+- Pass-Through mode in forward direction
+- Adapter current and battery current monitor (AMON/BMON)
+- Trickle charging of depleted battery
+- Reverse buck, boost, and buck-boost operation from battery
+- Battery Ship mode option
+- 4×4 32 Ld TQFN package compatible with the ISL9238/RAA489108 family of parts
+
+## Applications
+
+- Standalone battery charging for 2 to 7-cell batteries, including batteries for power tools, portable vacuums, battery-powered lawn mowers, drones
+- 2-cell to 7-cell tablets, Ultrabooks, notebooks, power banks, and any USB-C interface portable device requiring batteries
+
+**Figure 1. Full-Featured Architecture Solutions Enabled by RAA489118**
+
+
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+
+
+# 1. Overview
+
+## 1.1 Typical Application Diagram
+
+**Figure 2. Typical Application Circuit #1 (Battery Charging Only with No BFET)**
+
+
+
+
+
+**Figure 3. Typical Application Circuit #2 (NVDC Charging with a BFET)**
+
+
+
+
+
+## 1.2 Block Diagram
+
+**Figure 4. Block Diagram**
+
+
diff --git a/REN_RAA489118/01-overview.pdf b/REN_RAA489118/01-overview.pdf
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