AP7375Q-33FDCW-7

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

The AP7375Q-33FDCW-7 is a fixed-output automotive-grade ultra-low dropout linear regulator manufactured by Diodes Incorporated. It provides a stable 3.3V output with a maximum load current of 300mA and a typical quiescent current of 2.1µA. The device supports a wide input voltage range from 3V to 45V. Key electrical specifications include an output voltage accuracy of ±2%, a power supply rejection ratio of 85dB at 1kHz, and line/load regulation of 0.01%/V and 0.02%/mA respectively. Dropout voltages are specified as 35mV at 10mA and 350mV at 100mA.

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

• Integrated enable pin supporting up to 45V input for system control
• Fast transient response preventing overshoot during startup and short-circuit recovery
• Built-in thermal shutdown and short-circuit current protection mechanisms
• Automotive qualification compliant with AEC-Q100 standards

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

• Powering microcontrollers and CAN/LIN transceivers in automotive systems
• Supplying power to battery management systems for EVs and HEVs
• Providing regulated voltage for body control modules
• Powering transmission control units (TCUs)

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

Verify the specific package marking code H5GQ corresponds to the U-DFN2020-6 (SWP) configuration. Confirm that the application environment meets the AEC-Q100 requirements for automotive use. Ensure input capacitors are placed close to the VIN and GND pins to maintain stability. Validate that the output capacitor selection adheres to the minimum capacitance recommendations for reliable LDO operation under varying load conditions.

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

Select this component when a high input voltage range up to 45V is required alongside low static power consumption. The 3.3V fixed output makes it suitable for standard logic levels. The U-DFN2020-6 package offers a compact footprint with wettable flanks for improved solder joint inspection. Consider the thermal resistance characteristics if operating near maximum current limits or elevated ambient temperatures.

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

This part belongs to the AP7375Q series of wide-input voltage ULDO regulators designed specifically for automotive applications. It is available in multiple packages including SOT89, SO-8EP, SOT25, and U-DFN2020-6. The series offers various fixed output voltages such as 1.8V, 3.0V, 3.3V, and 5.0V. Manufacturing occurs in IATF 16949 certified facilities with PPAP capability.

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

AP7375Q-30FDCW-7: Provides a 3.0V output instead of 3.3V.

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

Does the AP7375Q-33FDCW-7 have an enable function?

Yes, the device features an EN pin that allows enabling and disabling the LDO output, which can accept input voltages up to 45V.

What protection features are integrated into this regulator?

The AP7375Q includes integrated short-circuit protection and thermal shutdown functionality to prevent damage during overcurrent or excessive temperature conditions.