Power Solution to Next-Generation Li-Ion Battery Applications – Maximizing Battery Life

RT4803B Application Note Smartphones Tablets

In Li-Ion battery applications, efficiency is everything. Richtek introduces the RT4803B, a newly released high- efficiency synchronous Boost Converter with an integrated bypass switch. By significantly reduces conduction losses, the RT4803B achieves near 100% efficiency, extending battery life effectively.

⭐ Key Features of RT4803B

1.2V I/O I²C Interface – Perfect for applications in advanced low-voltage chip process.
1.8V to 5V Input, 2.85V to 4.4V/3A Output – Ideal for 2G PA, Wi-Fi modules, and audio amplifiers in mobile devices.
Ultra-Low Shutdown Current (<1µA) – Extends standby time, optimizing battery lifespan.
I²C - Controlled 32-Adjustable Output Voltage – Flexible for various applications.

⚡ Explore More

How does the bypass switch significantly improve efficiency to nearly 100%?
Why is RT4803B the perfect fit for Si-Anode battery-powered portable devices?
See a design example in mobile applications.

☛ Read more RT4803B Application Note，to start your new design in no time.

Featured Products * The following products are available at Digikey.

Product Number	I_SW	I/O
RT4803B	4A	1.2V
RT4803A	4A	1.8V
RT4803	5A	1.8V

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