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Product Detailed Parameters
- Description：IC REG LINEAR 1.35V 150MA 4DFN
- 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)：1.35V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.64V @ 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 AP7315-135FS4-7B is a low dropout regulator manufactured by Diodes Incorporated, featuring a fixed 1.35V output voltage and housed in an X2-DFN1010-4 package. It operates within an input voltage range of 1.7V to 5.25V and guarantees a maximum output current of 150mA. The device provides high output voltage accuracy of ±1% and achieves a ripple rejection of 75dB at 1kHz. Its low output noise is specified at 60µVrms from 10Hz to 100kHz, with a quiescent current as low as 35µA.
Feature Summary
- CMOS-based architecture providing high output voltage accuracy and low on-resistance
- Integrated enable pin for precise power management control
- Low output noise and high ripple rejection suitable for sensitive circuits
- Built-in short circuit protection and thermal shutdown capabilities
Applications
- Smart Phone/PAD
- RF Supply
- Cameras
- Portable Videos
- Wireless Communication
Procurement Notes
Verify the specific ordering suffix FS4-7B to confirm the X2-DFN1010-4 package and tape & reel packaging quantity. Ensure the component matches the required 1.35V fixed output specification. Confirm RoHS compliance and lead-free status if environmental regulations apply to your manufacturing process. Cross-reference the datasheet revision to ensure all electrical characteristics align with your design requirements.
Selection Notes
Select this part when a stable 1.35V rail is needed with minimal footprint constraints due to the compact X2-DFN1010-4 package. Consider its low quiescent current for battery-operated applications requiring extended standby times. Evaluate the dropout voltage characteristics against your minimum input voltage to ensure regulation under varying load conditions. Verify that the 150mA current capability meets the peak demands of the target circuit.
Part Context
This component belongs to the AP7315 series of low dropout regulators designed for low power handheld communication equipment. The series utilizes a CMOS process to achieve high performance metrics including low noise and high PSRR. The AP7315 family offers various fixed output voltages and packaging options to support diverse PCB layout densities and power requirements in portable electronics.
Replacement Considerations
AP7315D-135FS4-7B (Features integrated auto-discharge functionality)
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 puts the device into shutdown mode.
How does the AP7315 handle short circuits?
When the VOUT pin is shorted to ground, short circuit protection triggers and clamps the output current to approximately 60mA to protect the regulator from damage.
