AP7353-36FS4-7

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

The AP7353-36FS4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 3.6 V with a guaranteed maximum output current of 250 mA. The device operates within an input voltage range of 2.0 V to 5.5 V and maintains an output voltage accuracy of ±1%. Key electrical characteristics include a typical quiescent current of 18 µA, a ripple rejection ratio of 90 dB at 1 kHz, and an output noise voltage of 10 µVrms from 10 Hz to 100 kHz. The component is housed in an X2-DFN1010-4 package.

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

• Integrates an enable pin for power control and shutdown functionality
• Features high power supply ripple rejection and low output noise
• Includes built-in short-circuit protection and thermal shutdown circuits

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

• RF supplies
• Smartphones and tablets
• Cameras
• Portable media players
• Wireless communication equipment

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

Verify the specific ordering suffix FS4 to confirm the X2-DFN1010-4 package type. Ensure the part number includes the -36 designation for the 3.6 V fixed output. Confirm the -7 suffix indicates tape and reel packaging. Cross-reference the manufacturer's datasheet to validate RoHS compliance and lead-free status before finalizing procurement specifications.

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

Select this component when a stable 3.6 V rail is required for sensitive analog or RF circuitry. The low quiescent current makes it suitable for battery-powered portable devices. Verify that the application load does not exceed the 250 mA continuous output limit. Consider the thermal dissipation capabilities of the X2-DFN1010-4 package under maximum load conditions.

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

This component belongs to the AP7353 series of low dropout regulators designed for handheld and wearable communication equipment. The series offers various fixed output voltages ranging from 1.8 V to 4.7 V. The FS4 suffix specifically denotes the X2-DFN1010-4 surface-mount package variant, which allows for dense PCB layouts.

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

AP7353-36CV4-7 (X1-WLB0707-4 package)

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

What is the function of the EN pin on the AP7353?

The EN pin enables or disables the regulator. Driving it high turns the regulator on, while pulling it low activates the shutdown mode.

Does the AP7353-36FS4-7 have an internal discharge resistor?

No, the standard AP7353 does not include an auto-discharge feature. The AP7353D variant includes an integrated N-channel discharge resistor.