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Bidirectional 20V Buck-Boost Battery Charger with SMBus Interface

パッケージ情報

Lead Count (#) 32
Pkg. Type TQFN
Pkg. Code L2F
Pitch (mm) 0.4
Pkg. Dimensions (mm) 3.99 x 3.99 x 0.70

環境及び輸出分類情報

Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US)
HTS (US)

製品スペック

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 -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
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) 4.0
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) 0.70
Topology Characteristic R3 modulator
Topology [Rail 1] Buck-Boost
Trickle Charge Current Range 64mA, 128mA, 256mA, or 512mA
Width (mm) 4.0

説明

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.