NCP4300ADR2

Overview

The NCP4300ADR2G is a dual operational amplifier and voltage reference integrated circuit designed for switch mode battery chargers and power supplies. It features a precision 2.6 V shunt reference with ±1.0% accuracy over temperature. The device includes two op-amps: Op-Amp 1 provides voltage control with its non-inverting input tied to the reference, while Op-Amp 2 serves as an independent current control amplifier. Key electrical parameters include a supply voltage range of 3.0 V to 35 V, a typical unity gain bandwidth of 0.7 MHz, and a maximum operating temperature of +105 °C.

Feature Summary

• Integrates a precision 2.6 V bandgap voltage reference with high temperature stability
• Features a dedicated voltage sensing operational amplifier with internal reference connection
• Includes an independent general-purpose operational amplifier for current sensing applications
• Supports single-supply operation with input common mode voltage including ground

Applications

• Constant-current constant-voltage (CC/CV) switch mode battery chargers
• Switch mode power supply output regulation
• Power converter feedback loop implementation

Procurement Notes

Verify the complete part number suffix against official documentation to confirm package type and tape/reel specifications. Confirm that the ordering code matches the required Pb-Free status and packaging quantity. Ensure compatibility with the intended SOIC-8 footprint dimensions and thermal resistance requirements during procurement planning.

Selection Notes

Select this component when a combined voltage reference and dual amplifier solution is required for power management circuits. The fixed 2.6 V reference simplifies resistor divider networks for voltage setting. Consider the medium bandwidth and slew rate capabilities relative to the switching frequency of the target power supply topology.

Part Context

This device belongs to the NCP4300A family of analog regulation control circuits manufactured by onsemi. It consolidates essential building blocks such as amplifiers, summing circuitry, and references into a single monolithic IC. This integration reduces system complexity and component count compared to discrete solutions using separate op-amps and shunt references.

Replacement Considerations

Check datasheets for alternative dual op-amps with integrated references. Verify pinout compatibility and electrical parameter overlap, specifically the reference voltage value and supply voltage range, before substituting.