AP7333-12SRG-7

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

The AP7333-12SRG-7 is a fixed-output low dropout linear regulator manufactured by Diodes Incorporated. It provides a stable 1.2V output with a maximum continuous load current of 300mA. The device operates within an input voltage range of 2V to 6V and maintains a typical quiescent current of 65µA across the full load spectrum. It features a typical dropout voltage of 300mV at 300mA and offers a power supply rejection ratio (PSRR) of 65dB at 100Hz. The component is housed in a SOT23R-3 surface-mount package, supports an ambient operating temperature from -40°C to +85°C, and includes built-in current limit, short circuit, and thermal shutdown protections.

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

• Ultra-fast start-up time of approximately 80µs enables rapid transitions between active and standby modes.
• Maintains stability with small ceramic output capacitors having low equivalent series resistance.
• Integrated protection mechanisms include current limiting, short-circuit clamping, and thermal shutdown.
• Low ground current consumption ensures extended battery life for portable electronic devices.

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

• Wireless LAN Cards
• XDSL Routers
• Battery Powered Equipments

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

Verify that the ordering suffix SRG-7 corresponds to the SOT23R package, Green molding compound, and Tape & Reel packaging format as defined in the manufacturer's official documentation. Confirm the specific output voltage code matches the required 1.2V specification. Ensure compliance with RoHS directives and lead-free finish requirements before finalizing procurement orders.

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

Select this component when a compact surface-mount solution is required for low-power applications demanding fast transient response. The SOT23R package is suitable for space-constrained designs. Verify that the input voltage remains within the 2V to 6V range and that the load current does not exceed 300mA. Consider the thermal resistance characteristics if high ambient temperatures are expected.

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

This part belongs to the AP7333 family of 300mA low dropout regulators designed for portable electronics. The series offers various fixed output voltages ranging from 1.0V to 3.3V. The AP7333-12SRG-7 specifically utilizes the SOT23R footprint variant, providing a smaller profile compared to standard SOT23 packages while maintaining identical electrical performance and pinout configurations.

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

Direct substitutes within the same family include AP7333-12SAG-7, which uses the standard SOT23 package instead of SOT23R. Other voltage variants such as AP7333-10SRG-7 or AP7333-15SRG-7 share the same package and electrical characteristics but provide different fixed output voltages.

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

Is a minimum load current required for the AP7333-12SRG-7 to remain stable?

No, the device is designed to remain stable and regulated under no-load conditions without requiring a minimum load current.

What type of output capacitor is recommended for this regulator?

A 1µF to 4.7µF ceramic capacitor with X7R or X5R temperature characteristics and an ESR between 10mΩ and 200mΩ is recommended.