AP7353D-32CV4-7

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

The AP7353D-32CV4-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 3.2V with a maximum guaranteed output current of 250mA. It operates within an input voltage range of 2.0V to 5.5V and features high power supply rejection ratio (PSRR) and low output noise characteristics. The device incorporates an integrated enable pin for power control and includes built-in short-circuit protection and thermal shutdown capabilities. It utilizes the X1-WLB0707-4 package type and is designed for battery-powered applications requiring stable voltage sources.

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

• Integrated enable pin allows precise power management by turning the regulator on or off via logic level signals.
• Built-in auto-discharge circuit actively pulls down the output voltage when disabled to ensure rapid system shutdown.
• High ripple rejection performance maintains stable output even under varying load conditions and input noise.
• Low quiescent current consumption extends battery life in portable and wearable electronic devices.

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

• Smartphones and tablet computers
• RF power supply circuits
• Portable video recording equipment
• Wireless communication adaptors

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

Verify that the specific part number suffix matches the required package style and discharge functionality. Confirm compliance with RoHS and REACH directives if environmental regulations apply to your manufacturing process. Ensure proper handling procedures are followed due to moisture sensitivity classification. Cross-reference the datasheet revision to confirm electrical characteristics align with your design requirements.

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

Select this component when a fixed 3.2V rail is required with minimal footprint constraints. The D-suffix indicates the presence of an output discharge feature, which is critical for systems needing fast power-down times. Evaluate the dropout voltage specifications against your minimum input voltage to ensure regulation stability under full load conditions.

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

This component belongs to the AP7353 series of low dropout regulators from Diodes Incorporated. The series offers various fixed output voltages ranging from 1.8V to 4.7V. The 'D' designation specifically denotes the inclusion of an internal discharge resistor, differentiating it from the standard non-discharge variants within the same family.

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

AP7353-32CV4-7

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

What is the function of the 'D' suffix in the part number?

The 'D' suffix indicates that the regulator includes an integrated auto-discharge circuit. This feature actively discharges the output capacitor when the enable pin is pulled low, ensuring the output voltage drops rapidly during shutdown.

How does the enable pin operate?

The enable pin controls the state of the regulator. Driving the pin high turns the regulator on, while pulling it low disables the device and activates the output discharge circuit. The pin must not be left floating to ensure proper operation.