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Product Detailed Parameters
- Description：IC REG LINEAR 3.1V 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)：3.1V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.29V @ 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 AP7315-31SR-7 is a low dropout regulator manufactured by Diodes Incorporated. It provides a fixed output voltage of 3.1V with an accuracy of ±1%. The device supports a guaranteed output current of 150mA and operates within an input voltage range of 1.7V to 5.25V. It features a ripple rejection of 75dB at 1kHz and a low output noise of 60µVrms from 10Hz to 100kHz. Quiescent current is as low as 35µA. The component utilizes a SOT23 package (SR suffix) and includes an enable pin for power control.
Feature Summary
- CMOS-based design offering high output voltage accuracy and low quiescent current
- Integrated enable input for turning the regulator on and off
- High ripple rejection ratio suitable for noise-sensitive applications
- Low output noise characteristics for RF and audio subsystems
Applications
- Smart Phone/PAD
- RF Supply
- Cameras
- Portable Videos
- Wireless Communication
Procurement Notes
Verify the specific ordering suffix SR indicates the SOT23 package configuration. Confirm the internal code matches the required 3.1V fixed output voltage variant. Ensure compliance with RoHS and Halogen-free requirements if specified for the target application environment. Check datasheet revision DS38352 Rev. 2 - 2 for any updates to electrical characteristics or marking information before finalizing procurement specifications.
Selection Notes
Select this component when a fixed 3.1V output is required with a maximum load current of 150mA. The SOT23 package is appropriate for space-constrained PCB layouts. Consider the 1.7V minimum input voltage for battery-powered designs. Verify that the 60µVrms output noise meets the sensitivity requirements of the connected circuitry. Ensure the enable pin logic levels align with the system control signals.
Part Context
This part belongs to the AP7315 series of low dropout regulators designed for low power handheld communication equipment. The series offers various fixed output voltages ranging from 1.1V to 3.3V. The SR suffix specifically denotes the SOT23 surface-mount package, distinguishing it from SOT25 or X2-DFN1010-4 options. The device is based on a CMOS process technology.
Replacement Considerations
AP7315-31SA-7
FAQ
What is the function of the EN pin?
The EN pin is an enable input used to turn the regulator on and off. Driving this pin high enables the regulator, while pulling it low puts the regulator into shutdown mode.
Does the AP7315-31SR-7 include output discharge?
No, the standard AP7315 does not have built-in output discharge. The AP7315D variant includes auto-discharge functionality.
