AP7353-32FS4-7

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

The AP7353-32FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.2V with a guaranteed maximum output current of 250mA. The device operates within an input voltage range of 2.0V to 5.5V and maintains an output voltage accuracy of ±1%. Key electrical characteristics include a typical quiescent current of 18µA, a ripple rejection ratio of 90dB at 1kHz, and an output noise voltage of 10µVrms from 10Hz to 100kHz. The component is housed in an X2-DFN1010-4 package.

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

• Integrated enable pin for power control
• High ripple rejection performance
• Low output noise specification
• Built-in short-circuit protection

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

• Smartphones and tablets
• RF power supplies
• Portable video devices
• Wireless communication equipment

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

Verify the specific ordering suffix FS4 corresponds to the X2-DFN1010-4 package type required for your design. Confirm that the non-discharge variant matches your circuit requirements regarding output capacitor behavior during shutdown. Ensure compliance with RoHS directives and check moisture sensitivity levels before PCB assembly.

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

Select this component when a stable 3.2V rail is needed with minimal footprint. The X2-DFN1010-4 package supports dense PCB layouts. Consider the 18µA quiescent current for battery efficiency. Verify thermal dissipation capabilities based on the expected load current and ambient temperature conditions.

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

This part belongs to the AP7353 series of low dropout regulators designed for handheld and wearable applications. The series offers various fixed output voltages and packages. The AP7353-32FS4-7 specifically utilizes the X2-DFN1010-4 form factor, distinguishing it from the X1-WLB0707-4 variant.

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

Does the AP7353-32FS4-7 have an internal discharge resistor?

No, the standard AP7353 does not include an internal discharge resistor. The AP7353D variant includes this feature.

What is the minimum recommended output capacitor value?

The datasheet recommends a minimum effective capacitance of 0.7µF to maintain stability, accounting for temperature and DC bias variations.