AP4310EMTR-G1

Overview

The AP4310EMTR-G1 is a monolithic integrated circuit designed for regulating output current and voltage in switching battery chargers and power supplies. It integrates two operational amplifiers and a precision 2.5V shunt voltage reference within an SO-8 package. The device features a supply voltage range of 3V to 36V, with Op Amp 1 configured for voltage control via its internal connection to the reference output, and Op Amp 2 dedicated to uncommitted current control. Key electrical characteristics include a unity gain bandwidth of 1MHz, input offset voltage of 0.5mV, and a reference voltage tolerance of ±0.4%.

Feature Summary

• Integrates two operational amplifiers and a precision 2.5V shunt voltage reference on a single chip
• Op Amp 1 provides voltage control with non-inverting input internally connected to the shunt regulator output
• Op Amp 2 offers uncommitted inputs specifically designated for current control applications
• Operates across a wide supply voltage range from 3V to 36V

Applications

• Battery chargers
• Switching power supplies

Procurement Notes

Verify that the component matches the specific AP4310E variant rather than the standard AP4310A or AP4310, as the E suffix indicates stricter reference voltage tolerance and offset specifications. Confirm the MTR-G1 suffix corresponds to the Tape & Reel packaging format containing 4,000 units per carrier. Ensure compliance with RoHS 3 and Halogen-free requirements if mandated by the target assembly process.

Selection Notes

Select this component when high-precision regulation is required for both voltage and current loops within a single IC. The AP4310E is preferred over the standard AP4310 due to its tighter reference voltage tolerance of ±0.4%. It is suitable for designs requiring a wide operating supply voltage up to 36V and low quiescent current consumption of approximately 75µA per op amp at 5V.

Part Context

This part belongs to the AP4310 family of dual op amps and voltage references manufactured by Diodes Incorporated. It is functionally similar to the AP4310AMTR-G1 but distinguished by the 'E' designation, which denotes enhanced performance specifications regarding reference voltage accuracy and offset voltage. The device serves as a cost-effective solution for reducing system complexity in power converter designs.

Replacement Considerations

AP4310AMTR-G1

FAQ

How does the AP4310E differ from the standard AP4310?

The AP4310E features more stringent reference voltage tolerance (±0.4%) and lower input offset voltage compared to the standard AP4310.

What is the internal configuration of Op Amp 1?

Op Amp 1 is designed for voltage control, with its non-inverting input internally connected to the output of the shunt regulator.