AP7381-33V-A

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

The AP7381-33V-A is a positive voltage regulator IC from the AP7381 series, manufactured by Diodes Incorporated. It provides a fixed output voltage of 3.3 V with a maximum output current of 150 mA. The device supports an input voltage range from 3.3 V to 40 V and operates within a junction temperature range of -40 °C to +125 °C. It features a dropout voltage of 1000 mV at 100 mA, ground current of 2.5 µA at no load, and line regulation of 0.05 %/V. The component is housed in a TO92 package with Ammo Packing.

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

• Ultra-low quiescent current for extended battery life
• High accuracy output voltage regulation
• Integrated thermal shutdown protection
• Compatible with low ESR ceramic capacitors

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

• E-meters
• Battery-powered equipments
• Laptops, palmtops, notebook computers
• Portable information appliances

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

Verify the specific ordering suffix 'V' corresponds to the TO92 Ammo Packing configuration as documented. Confirm that the manufacturer does not recommend this package type for new designs due to potential availability or lifecycle constraints. Ensure compliance with RoHS and Halogen-free requirements specified in the datasheet notes before finalizing procurement specifications.

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

Select this component when a fixed 3.3 V rail is required from inputs up to 40 V. The TO92 Ammo Packing is suitable for through-hole applications where space is less constrained than surface mount options. Consider alternative packages like SOT23 or SOT89 if surface mounting is preferred, noting that the TO92 variant is explicitly marked as not recommended for new designs.

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

The AP7381 series includes multiple fixed voltage versions (2.8 V, 3.3 V, 5.0 V, 7.0 V) and package options (SOT23, SOT89, TO92). The AP7381-33V-A specifically denotes the 3.3 V output version in the TO92 Ammo Packing. This part belongs to the ULDO regulator family designed for USB and portable devices requiring wide input voltage ranges.

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

For equivalent performance in different packages, consider AP7381-33SA-7 (SOT23) or AP7381-33Y-13 (SOT89). Verify pinout compatibility and thermal resistance differences between TO92 and surface mount packages during substitution.