AP7346D-2833FS6-7

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The AP7346D-2833FS6-7 is a dual high accuracy current limit low dropout regulator manufactured by Diodes Incorporated. It provides two fixed output voltages: Channel 1 outputs 2.8V and Channel 2 outputs 3.3V. The device supports an input voltage range from 1.7V to 5.25V with a maximum output current of 130mA per channel. Key electrical specifications include a quiescent current as low as 35µA, ripple rejection of 75dB at 1kHz, and output voltage accuracy of ±1%. It operates within a temperature range of -40°C to +85°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Dual-channel architecture with integrated enable inputs for independent control
• High accuracy current limiting circuitry protects against overcurrent conditions
• Low dropout performance ensures stable regulation under varying load conditions
• Integrated discharge feature allows rapid output voltage decay upon shutdown

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Fingerprint modulars
• Smart phones/PADs
• RF supplies
• Cameras
• Portable media players

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify component authenticity through authorized Diodes Incorporated distributors or certified supply chain partners. Confirm the specific ordering suffix FS6 corresponds to the X2-DFN1212-6 package and that the part status aligns with project requirements, as this series may be subject to discontinuation notices. Ensure compliance with RoHS 3 and REACH regulations relevant to your manufacturing region before finalizing procurement orders.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when designing circuits requiring two distinct regulated voltages from a single power rail in a compact footprint. The dual enable pins allow for flexible power sequencing or independent channel management. Consider the low quiescent current for battery-operated applications and ensure adequate thermal dissipation via the exposed pad on the PCB layout to maintain reliability across the specified operating temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the AP7346 family of dual LDO regulators designed for low-power handheld communication equipment. It utilizes a CMOS process to achieve high output voltage accuracy and low noise. The datasheet explicitly states that the AP7346 is not recommended for new designs and recommends using the AP7345D instead for future projects.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

AP7345D-2833RH4-7

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators FAQ

What is the function of the EN pins?

The EN1 and EN2 pins are enable inputs that turn the respective channels on or off. Driving these pins high enables the output, while pulling them low puts the regulator into shutdown mode.

How does the device handle short-circuit conditions?

When an output pin is shorted to ground, the internal current limit circuit triggers, clamping the output current to approximately 60mA to protect the regulator from damage due to overheating.