AP7351D-15FS4-7B

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

The AP7351D-15FS4-7B is a low dropout regulator manufactured by Diodes Incorporated, featuring an integrated resistor network for fixed output voltage delivery. It operates within an input voltage range of 1.4V to 5.5V and guarantees an output current of 150mA. The device provides a precise 1.5V output with ±1% accuracy at +25°C. Key electrical parameters include a quiescent current as low as 0.5µA and a typical standby current of 0.02µA. Ripple rejection reaches up to 60dB at 1kHz. The component is housed in an X2-DFN1010-4 (Type B) package.

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

• Ultra-low quiescent current design optimized for extended battery life in portable applications
• Integrated enable pin allows for precise power management and shutdown control
• High output voltage accuracy ensures stable performance across varying conditions
• Low dropout capability supports operation with minimal input-to-output voltage difference

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

• Wearable Electronics
• Sensor Module for Internet-Of-Things (IOT)
• Wireless Communication Module
• Battery-Operated Device
• Camera
• Image Sensor

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

Verify the specific ordering suffix FS4-7B corresponds to the required X2-DFN1010-4 Type B package and tape & reel packaging configuration. Confirm that the 1.5V fixed output variant matches the system requirements. Ensure compliance with RoHS and halogen-free standards if mandated by the end product specifications. Cross-reference the datasheet revision to confirm pinout and thermal characteristics align with the design implementation.

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

Select this component when ultra-low standby current is critical for battery-operated systems requiring long operational periods between replacements. The 150mA output current capability suits moderate load applications. Verify that the input voltage range of 1.4V to 5.5V accommodates the source supply variations. Consider the thermal resistance of the X2-DFN1010-4 package for PCB layout planning to ensure adequate heat dissipation under maximum load conditions.

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

The AP7351D belongs to a family of low dropout regulators designed for low-power handheld and wearable devices. This series emphasizes energy efficiency through minimized quiescent current consumption. The AP7351D-15FS4-7B specifically denotes the 1.5V output version packaged in the compact X2-DFN1010-4 form factor, suitable for dense PCB layouts where space constraints are significant.

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

AP7351D-15FS4-7R

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

What is the function of the EN pin on the AP7351D?

The EN pin serves as an enable input to turn the regulator on or off. Driving it high enables the regulator, while pulling it low activates shutdown mode. It must not be left floating.

Does the AP7351D support active output discharge?

Yes, the AP7351D includes an active output discharge feature. When the EN pin is pulled low, an internal discharge path connects the output to ground to rapidly dissipate stored charge.