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Product Detailed Parameters
- Description：IC REG LINEAR 1.8V X2-DFN10104
- 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：4-XDFN Exposed Pad
- Supplier Device Package：X2-DFN1010-4
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Overview
The AP7315-18FS4-7B is a fixed-output low dropout regulator manufactured by Diodes Incorporated. It provides a nominal output voltage of 1.8V 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 quiescent current as low as 35µA, ripple rejection of 75dB at 1kHz, and low output noise of 60µVrms from 10Hz to 100kHz. The component utilizes an X2-DFN1010-4 package and includes an enable pin for power control.
Feature Summary
- CMOS-based architecture providing high output voltage accuracy and low on-resistance
- Integrated enable input allowing precise power-on and shutdown control
- High power supply ripple rejection and low output noise suitable for sensitive subsystems
- Built-in short circuit protection and thermal management capabilities
Applications
- Smartphones and tablet devices
- RF power supply circuits
- Portable video players
- Wireless communication adapters
- Camera modules
Procurement Notes
Verify the specific ordering suffix FS4-7B corresponds to the X2-DFN1010-4 package and tape-and-reel packaging configuration. Confirm that the 'Non Discharge' variant matches system requirements regarding output capacitor discharge behavior upon shutdown. Ensure compliance with RoHS and halogen-free specifications if required by the target assembly process.
Selection Notes
Select this part when a stable 1.8V rail is required with minimal footprint constraints. The X2-DFN1010-4 package offers a compact solution for dense PCB layouts. Consider the 150mA current capability and low quiescent current for battery-operated applications. Verify that the input voltage remains within the 1.7V to 5.25V range during all operating conditions.
Part Context
This component belongs to the AP7315 series of low dropout regulators designed for low-power handheld communication equipment. The series is characterized by CMOS processing, which enables low static current consumption and high performance metrics. The AP7315-18FS4-7B specifically denotes the 1.8V fixed output version in the small DFN package format.
Replacement Considerations
AP7315D-18FS4-7B (Features integrated output discharge)
FAQ
What is the function of the EN pin?
The EN pin is an enable input used to turn the regulator on or off. Driving it high enables the regulator, while pulling it low activates shutdown mode.
Does this part include output discharge?
No, the AP7315-18FS4-7B is a non-discharge version. For parts with built-in auto-discharge, the 'D' suffix (e.g., AP7315D-18FS4-7B) should be selected.
