AP7332-1218FM-7

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

The AP7332-1218FM-7 is a dual-channel low dropout linear regulator manufactured by Diodes Incorporated. It provides fixed output voltages of 1.2V and 1.8V with a maximum continuous current of 300mA per channel. The device operates within an input voltage range of 2V to 6V and features a typical quiescent current of 60µA. It includes independent enable pins for each channel, offering fast start-up times of approximately 150µs. The component incorporates comprehensive protection mechanisms including current limit, short circuit, and thermal shutdown. It is housed in a DFN2018-6 package.

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

• Dual-channel architecture with independent high-level enable inputs for precise power management control
• Fast transient response capability designed to support rapidly changing load conditions without significant voltage overshoot or undershoot
• Integrated protection circuitry providing current limiting, short-circuit clamping, and thermal shutdown to prevent damage during fault conditions
• Stable operation guaranteed with low equivalent series resistance ceramic capacitors as small as 1µF

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

• Cellular phones and smart phones
• Personal Digital Assistants (PDAs)
• MP3/MP4 media players
• Bluetooth headsets

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

Verify the specific ordering suffix FM confirms the DFN2018-6 package configuration before integration. Confirm that the -7 suffix aligns with tape and reel packaging requirements for automated assembly lines. Ensure the design accounts for the device status as not recommended for new designs by consulting the manufacturer's latest recommendations for future projects.

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

Select this component when a dual-rail power supply solution is required from a single input source within the 2V to 6V range. The 1.2V/1.8V output combination suits digital logic and memory interfaces requiring distinct voltage domains. Consider the DFN2018-6 package for applications prioritizing compact board space and efficient thermal dissipation through the exposed pad.

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

This part belongs to the AP7332 family of dual 300mA low dropout regulators. It shares functional similarities with other members like the AP7333 but differs in package options and specific output voltage configurations. The AP7332 is positioned for portable electronics requiring multiple regulated rails from a single battery source while maintaining low ground current consumption.

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

The datasheet explicitly recommends using AP7344 or AP7345D as replacements for new designs. Verify pin compatibility and electrical specifications against these suggested alternatives before substitution.

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

What is the minimum capacitance required for stable operation?

The AP7332 is stable with ceramic output capacitors of at least 1µF, provided they have an equivalent series resistance greater than or equal to 10mΩ.

How does the device handle short circuit conditions?

Short circuit protection triggers when the output is shorted to ground, clamping the output current to approximately 120mA to protect the regulator from overheating.