RT9492GQVF

Overview

The RT9492GQVF is a highly integrated buck-boost switching battery charger and system power path management device designed for two-to-four-cell lithium-ion and lithium-polymer batteries. It supports up to 5A charging current with an input voltage range of 3.6V to 24V. The device features a low-impedance power path, I²C serial interface, and programmable switching frequencies of 750kHz, 1MHz, or 1.5MHz. It operates within a junction temperature range of -40°C to 125°C and is housed in a VQFN4x4-29T(FC) package.

Feature Summary

• Integrates high-efficiency synchronous switch-mode buck-boost charger with optimized low-impedance power path for extended battery life.
• Supports fast role swap (FRS) and USB on-the-go (OTG) functionality with high efficiency at 2A output.
• Includes 11-channel, 16-bit ADC and I²C interface for flexible system settings and high state-of-charge accuracy.
• Provides comprehensive protection against overtemperature, overvoltage, undervoltage, and overload conditions.

Applications

• Smartphones and mobile handheld devices
• Tablets and portable computing devices
• Wearable electronics and IoT devices
• Power banks and portable chargers

Procurement Notes

Verify the exact suffix GQVF matches the required VQFN4x4-29T(FC) package and pinout configuration. Confirm RoHS compliance status and lead times with authorized distributors as availability may vary. Ensure design-in compatibility with existing BOM components and thermal requirements for the specific application environment.

Selection Notes

Select this component when designing systems requiring support for multi-cell Li-ion or Li-polymer batteries with wide input voltage ranges up to 24V. Consider its high charge efficiency and integrated power path management for applications prioritizing battery longevity and rapid charging capabilities. Evaluate the need for FRS/OTG support if bidirectional power transmission is required.

Part Context

The RT9492 belongs to Richtek's buck-boost switching battery charger series, offering versatility through multiple package options including WL-CSP and VQFN variants. It complements other PMIC solutions by providing robust power path management and precise charging control for modern portable electronic devices demanding high reliability and efficiency.

Replacement Considerations

The RT9490 is a parameter-equivalent alternative within the same series, available in a different WL-CSP2.93x3.46-56(BSC) package. Verify package footprint compatibility and pin mapping before substitution. Both devices share similar functional characteristics but differ in physical dimensions and thermal dissipation properties.