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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V 150MA SOT23-3
- Series：-
- Mfr：Diodes Incorporated
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.25V
- Voltage - Output (Min/Fixed)：1.8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.44V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：60 µA
- Current - Supply (Max)：100 µA
- PSRR：75dB (1kHz)
- Control Features：-
- Protection Features：Over Current
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
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Overview
The AP7315-18SA-7 is a fixed-output low dropout regulator manufactured by Diodes Incorporated, providing a nominal output voltage of 1.8V. It operates within an input voltage range of 1.7V to 5.25V and supports a guaranteed maximum output current of 150mA. The device features high ripple rejection of 75dB at 1kHz and low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is specified as low as 35µA. It utilizes SOT23 packaging and includes an enable pin for power control.
Feature Summary
- Integrated enable pin allows precise on/off control of the regulator output
- CMOS process design ensures low quiescent current and efficient operation
- High ripple rejection ratio minimizes power supply noise in sensitive circuits
- Low output noise characteristics suitable for RF and audio subsystems
Applications
- Smart Phone/PAD
- RF Supply
- Cameras
- Portable Videos
- Wireless Communication
Procurement Notes
Verify the specific ordering suffix SA confirms the SOT23 package type and standard non-discharge configuration. Confirm the -18 designation matches the required 1.8V output voltage for your circuit design. Ensure compliance with RoHS and lead-free requirements if applicable to your manufacturing standards. Check datasheet revision DS38352 Rev. 2 - 2 for any updates to electrical characteristics or marking information before finalizing procurement.
Selection Notes
Select this component when a stable 1.8V rail is needed from inputs as low as 1.7V. The SOT23 package offers a compact footprint for dense PCB layouts. Consider the 150mA current limit and 75dB PSRR for noise-sensitive applications. Verify that the 35µA quiescent current meets battery life requirements. Ensure input capacitors are placed close to the VIN and GND pins for stability.
Part Context
This part belongs to the AP7315 series of low dropout regulators designed for low power handheld communication equipment. The series provides various fixed output voltages ranging from 1.1V to 3.3V. It is built on a CMOS process and includes internal current limit and thermal protection. The AP7315 family is available in multiple packages including X2-DFN1010-4, SOT23, and SOT25.
Replacement Considerations
AP7315-18SR-7: Same 1.8V output but uses SR package variant.
FAQ
What is the function of the EN pin?
The EN pin enables or disables the regulator. Driving it high turns the regulator on, while pulling it low puts it into shutdown mode.
Does the AP7315-18SA-7 have an auto-discharge feature?
No, the standard AP7315 does not include auto-discharge. The AP7315D variant includes this feature.
