CN
Switching Charger
NU6805
The NU6805 is a high-efficiency, synchronous bidirectional buck-boost charge-discharge Copyright © 2024 NuVolta Technologies Inc. controller designed for managing 1- to 4-cell battery systems. It integrates a 4-switch architecture driver to support buck, boost, and buck-boost modes, enabling efficient power conversion across input voltages ranging from 4V to 24V while in charging mode, and output voltage from 3 to 22V in discharging mode. With a maximum input and output power of 100W, the device offers flexible input/output path management, programmable current/voltage limits via I²C interface, and robust protection features. The NU6805 is ideal for applications requiring bidirectional power flow, such as power banks, industrial equipment, and rechargeable battery systems.
Key Spec
Features

Supports 1 to 4 cell battery configurations from 3V to 19.2V CV range with input range 4V–24V and maxim input power 100W.

• Supports 3V to 22V output voltage and maxim output power 100W.

• Programmable switching frequencies (200 kHz, 300 kHz, 400 kHz, 800 kHz).

• Automatic PFM/PWM mode switching for high efficiency across load ranges.

• Integrated 3 external drivers for port management with adapter detection and inserting detection.

• Real-time 12-bit ADC monitoring (VBUS, VBAT, currents, NTC temperature).

• Ultra-low shutdown current: 40 µA (typical)

• Full input/output protection integrated: Overvoltage (OVP), Undervoltage (UVP), Overcurrent (OCP), Short-Circuit (SCP).

• Trickle, constant current, voltage charging with timeout controls.

• Configurable device address (0x18, 0x1C, 0x38, 0x3C).

• 4mm x 4mm QFN-32 package with enhanced thermal performance

Applications

• Power Bank

• Power Tools

• Other Li-ion Battery Charger

Datasheet Download
NU6805

2025 / 08 / 22