NCP4300ADR2G

Overview

The NCP4300ADR2G is a dual operational amplifier and voltage reference integrated circuit designed for switch mode battery chargers and power supplies. It features two op-amps and a precision 2.6 V shunt reference. The device operates within a supply voltage range of 3.0 V to 35 V, with an operating temperature range of 0°C to 105°C. Key electrical parameters include a typical unity gain bandwidth of 0.7 MHz, a maximum input offset voltage of 3.0 mV, and a typical slew rate of 0.5 V/µs.

Feature Summary

• Integrates a precision 2.6 V bandgap voltage reference with high temperature stability.
• Contains two operational amplifiers optimized for simultaneous voltage and current control loops.
• Features low input offset voltage and wide common-mode input voltage range including ground.

Applications

• Constant-current constant-voltage switch mode battery chargers
• Switch mode power supplies requiring precise output regulation

Procurement Notes

Verify the component marking code 'N4300' and package suffix 'ADR2G' against official onsemi documentation to confirm authenticity. Ensure the ordering suffix matches the required tape and reel packaging specifications. Confirm RoHS compliance status as indicated in the datasheet before finalizing procurement.

Selection Notes

Select this component when a monolithic solution combining dual op-amps and a fixed voltage reference is required for power management circuits. The internal connection of Op-Amp 1's non-inverting input to the reference simplifies voltage sensing designs. Consider the 0.7 MHz bandwidth and 35 V supply limit for system compatibility.

Part Context

This part belongs to the NCP4300A series, which integrates analog regulation functions into a single SOIC-8 package. It replaces discrete resistor dividers and separate reference components, reducing system complexity and cost in power converter designs.

Replacement Considerations

No direct substitute part numbers are documented in the provided source material.

FAQ

How is the voltage regulation threshold determined?

The voltage regulation threshold is fixed at 2.6 V because the non-inverting input of Op-Amp 1 is internally connected to the precision voltage reference.

What is the function of Op-Amp 2?

Op-Amp 2 is configured as a general-purpose operational amplifier with all terminals available for the user, typically used for current sensing in constant current regulators.