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Package Information
| CAD Model: | View CAD Model |
| Pkg. Type: | TQFN |
| Pkg. Code: | L2F |
| Lead Count (#): | 32 |
| Pkg. Dimensions (mm): | 3.99 x 3.99 x 0.70 |
| Pitch (mm): | 0.4 |
Environmental & Export Classifications
| Moisture Sensitivity Level (MSL) | 3 |
| Pb (Lead) Free | Yes |
| ECCN (US) | |
| HTS (US) |
Product Attributes
| Pkg. Type | TQFN |
| Lead Count (#) | 32 |
| Carrier Type | Reel |
| Moisture Sensitivity Level (MSL) | 3 |
| Pb (Lead) Free | Yes |
| Pb Free Category | Pb-Free 100% Matte Tin Plate w/Anneal-e3 |
| Temp. Range (°C) | -40 to +100°C |
| Automatic Power Source Selection | Yes |
| Automatic Trickle Charge (Typical) | Set by User |
| Battery Charge Voltage | 2-4 cell battery |
| Battery Charge Voltage Adjustment | 8mV steps |
| Battery Chemistry | Multi-Cell Li+/Polymer |
| Battery Leakage Current (Max) | 24µA, Battery only, BGATE on, PSYS OFF, BMON OFF, VBAT = 16.8V, DCIN current comes from battery, IBAT = IVBAT + ICSOP + ICSON + IDCIN + IVSYS |
| Bi-direction | Yes |
| Charge Current Limit Accuracy | ±2.5 (6A) |
| Charging Voltage Accuracy (Max) (±%) | 0.5 |
| Country of Assembly | TAIWAN |
| Country of Wafer Fabrication | TAIWAN |
| DC Adapter Detection | Yes |
| Input Current Limit Accuracy (% (±)) | 2 |
| Input Voltage (Max) (V) | 23.4 |
| Input Voltage (Min) (V) | 3.2 |
| Input Voltage Range (V) | 3.9 - 23.4 |
| Length (mm) | 4 |
| MOQ | 6000 |
| Output Voltage (Max) (V) | 18.304 |
| Output Voltage (Min) (V) | 2.4 |
| Parametric Category | Battery Charger ICs |
| Pitch (mm) | 0.4 |
| Pkg. Dimensions (mm) | 4.0 x 4.0 x 0.70 |
| Product Type | Battery Charger |
| Qualification Level | Standard |
| Switching Frequency Range (Typical) (kHz) | 635 - 1000 |
| Thickness (mm) | 0.7 |
| Topology Characteristic | R3 modulator |
| Topology [Rail 1] | Buck-Boost |
| Trickle Charge Current Range | 64mA, 128mA, 256mA, or 512mA |
| Width (mm) | 4 |
Resources for RRB96838
Description
The RRB96838 is a buck-boost battery charger supporting input voltages up to 23.4V and battery voltages up to 18.3V. It can operate in direct battery charging mode without a battery FET or in narrow-voltage DC (NVDC) charging mode with a battery FET. Featuring advanced Renesas R3™ technology, it ensures highly efficient light-load operation and fast transient response.
For direct battery charging, the RRB96838 supports 2- to 4-cell batteries, making it ideal for applications such as power tools, portable vacuums, drones, robots, and power banks. As an NVDC charger, it regulates system output to a narrow voltage range, ensuring stable system bus voltage. In NVDC operation, system power can be sourced from the adapter, battery, or a combination of both.
The RRB96838 is compatible with a wide range of DC power sources, including USB Type-C® and USB Power Delivery (PD) adapters, and safely charges battery packs with up to four serially connected Li-ion cells. It also supports reverse buck, boost, and buck-boost operation, enabling power transfer from the battery to the input port. Additionally, the RRB96838 features SMBus and I2C serial communication, allowing programming of critical parameters for a fully customized solution.